67000 kmof backbone DWDM networks

I N F I N I T E T E C H N O L O G I E S

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D E V E L O P M E N T l P R O D U C T I O N l D E S I G N l I N S T A L L A T I O N

DWDMSYSTEMSVOLGA

400G PERFORMANCE

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OUR ACHIEVEMENTS

07/2015. In April 2015, T8 put into operation a 100G channel Moscow–Novosibirsk on Volga DWDM equipment without signal regeneration. The 100G channel was implemented in two routes — via Samara and via Yekaterinburg, with 1+1 redundancy. The length of two legs of the line is 4,250 km and 3,400 km, respectively. The channels were organized within the existing multiplex DWDM system built on equipment from international manufacturers. Equipment has proved to be efficient, thereby providing a substantial signal/noise margin on OSNR.

100Gbit/sec channel in a 4,250 km fiber optic line “Moscow-Novosibirsk” without regeneration

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About the Company .................................................................................................... 4

DWDM EquipmentVolga DWDM Platform ................................................................................................. 6Cross-connect DWDM Platform Volga ........................................................................ 7400G Equipment ......................................................................................................... 8200G Equipment ......................................................................................................... 9100G Equipment ....................................................................................................... 1040G Equipment .......................................................................................................... 1210G Equipment .......................................................................................................... 132,5G Equipment and Below ...................................................................................... 16EDFA & RAMAN Optical Fiber Amplifiers .................................................................. 18Hybrid Amplifier EDFA + RAMAN ............................................................................... 19Remote Optically Pumped Amplifier ROPA .............................................................. 19Optical unit with EADM amplifier .............................................................................. 20Optical Units Vmux ..................................................................................................... 21Optical Spectrum Analyzer OPM ............................................................................... 21ROADM – the Solution for Multichannel Networks ................................................. 22

DWDM and СWDM Compact Systems3U Compact Metro DWDM System .......................................................................... 23100G DWDM System V1-MS-100E .......................................................................... 24DWDM System 10*10 Gbit/s V1-TT-C10E .............................................................. 24Irtysh Up to 10 Gbit/s ................................................................................................ 25Irtysh Up to 2.5 Gbit/s ............................................................................................... 25

Network Management SystemNetwork Management System NMS Fractal ............................................................ 26

Solution and ServicesResearch and Development Center ......................................................................... 27DWDM Network Designs and calculation................................................................. 28Technical Support & Learning ................................................................................... 30

Fiber Optic Security SystemDunay Distributed Fiber Optic Security System ....................................................... 31

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T8 is the leading manufacturer of wavelength-division multiplexing telecommunication equipment (DWDM and CWDM) in Russia and CIS countries. We develop and manufacture a line of DWDM and CWDM equipment with channel speed up to 400 Gbit/s. The entire T8 equipment is being designed and manufactured in Russia. Company headquarter is located in Moscow; there is a regional representative office in Saint Petersburg. There are over 200 staff members in the company, including 2 Professors and 17 PhDs.

The company got short-listed among the Top 10 of Russia most innovative companies according to the TECHUP-2014 rating and among the Top 30 rapidly developing companies according to TECHUP-2013. T8 has been a CNEWS AWARDS winner in “Russian Technologies” nomination. In 2014, the company won a competition of ROSTEC, Russian state corporation in the field of photonics with a project for a new DWDM system. In 2015, the company became the nominee for the «Industry» award.

A substantial part of our profit is re-investing to scientific research and development activities that allow us to manufacture world-class CWDM and DWDM equipment. T8 has the own R&D Center, “T8 Scientific and Technical Center” LLC, which is a resident of the Skolkovo Innovation Center, as well as the best-equipped measurement laboratory in Russia. Every year our specialists publish dozens of scientific articles in Russian and international journals. We obtain patents for new scientific research results year by year.

Based on researches performed in our R&D Center, we established several world records in 100 Gbit/s signal transmission:

•100G transmission over 4250 km in real Moscow - Novosibirsk DWDM system without dispersion compensator modules (DCM) or signal regeneration;

•10x100G transmission over 500 km in a single-span fiber optic line using of remote optically pumped amplifiers (ROPA)

One of direction developing fiber optic products is the Dunay distributed acoustic sensor. The Dunay team has its separate company, T8 SENSOR LLC. The device is intended for monitoring of security zones of long-

T8 – Technologies of InfinityAbout the company

General Director of T8, Treshchikov Vladimir PhD

About the Company

distance objects: oil and gas pipelines, communication lines, state borders, perimeters of large areas, such as industrial and specialized objects.

The development of modern telecom equipment and the implementing of innovative technologies require high professionalism and creative approach of the employees. Not only state-of-the-art technology gurus but also recent graduates work in our company.

We have established a school for training and education of young specialists; we select and promote the best graduates of leading Russian universities such as MIPT, MSU, Bauman MSTU, and others. The company has established several telecommunication laboratories in MTUCI and in the Saint Petersburg State University of Telecommunications named after Prof. M.A. Bonch-Bruevich. Training courses for specialists are an opportunity to extend one's knowledge in the area of wavelength division multiplexing technology and to work practically with the telecommunication technologies.

T8 offers integrated solutions for building DWDM systems on a turnkey basis: design, supply, installation and maintenance of the equipment. The qualification of the company specialists makes possible to implement projects of any complexity both for regional and backbone DWDM networks. The in-house design department calculates DWDM networks within a short period of time.

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The main areas of T8 company activities:

• Development and manufacture of CWDM and DWDM equipment;

• Pre-design analysis of fiber optic lines;• Development of design concept, calculation and

engineering design of networks;• Equipment installation;• Maintenance and technical support of equipment;• Distributed acoustic sensors development;• Laser physics and optoelectronics research and

development activities. The company has ample technical capabilities permitting to solve any types of tasks that may appear. The vast practical experience in the installation of high-complexity systems in various climatic conditions makes it possible for our specialists to manage the most challenging situations within short time and with high quality. The company has full-time mobile groups of engineers that can provide immediate response to any situation. The high quality of projects implementation is confirmed by positive feedback and references. The company is ISO 9001 certified.

We have put in operation over 67,000 km of DWDM lines, and more than 10,000 km of them are high-speed (100 Gbit/s) lines. Communications providers, system integrators, state authorities, data processing centers, plants and factories are among our clients. One of the key customers in Russia is Rostelecom Company. Our customers:

About the Company

The company built a DWDM network for Sochi 2014; part of the network was built using 100G DWDM system Volga

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Volga DWDM PlatformIncrease your network performance using our high-speed device

DWDM Equipment

High-speed multiservice and multiprotocol DWDM platform Volga consists of the range of chassis with different capacities and optimized for various optical network deployments: from compact solutions for density and distance increasing of existing city and regional networks or data center interconnect to organization of high capacity and long-haul transport infrastructure for multiservice optical networks. All chassis of DWDM-platform Volga use common software and hardware, control and monitoring systems, ensuring compatibility, manageability and interchangeability of modules in all product lines.

•4 chassis types: 10U with 13 slots, 6U with 7 slots, 3U with 3 slots or 1U with 1 slot;

•Support up to 400G;•Optic amplifiers: EDFA, RAMAN

and gybrid EDFA+RAMAN;•ROADM: WSS 1x1, 1x2, 1x4, 1x9;•Redundant AC/DC power

supplies: 650, 850, 1200 or 1600W.

Powerful DWDM transmission: 40, 80 or 96 channels 100G each, 48 channels 400G

Transponders support various line speeds 400 (2x200), 200, 100, 40, 10, 2.5G. The hot upgrade without traffic interruption is possible. Coherent detection and SD-FEC/Soft-FEC in 400G/100/40/10G transponders makes the transmission characteristics of these transponders very solid and enables them to work in old lines together with existed 2,5G channels. Due to high fault-tolerance of 100G DWDM transponder, the transmission on distances of up to 4250 km without dispersion compensators in the line with cascade of amplifiers is possible, as well as the 500 km point-to-point transmission with the use of Remote Optically Pumped Amplifiers (ROPA). The newest 400Gbit/s equipment is intended for the organization of transport infrastructure of data centers and city networks.

Space efficiency in the rackA line of different form-factor chassis with 13 slots, 7 slots, 3 slots for the convenience of network construction and subsequent renovation and expansion of channel

capacity. Each transponder of the Volga platform is also available in 1U standalone version, including 400 Gbit /s equipment.

Flexibility and network protection: OTN, 1+1 and add/drop, ROADM

•ROADM is a flexible output of optical channels for network protection and upgrade

•Protection 1+1 at speeds of 2.5, 10G - two line interfaces

•Aggregators 10x10G, 4x10G, 4x2.5G, 8x1GE•BS cards – optical protection of expensive

interfaces 40G and 100G/400G

Modules of the platform support OTN X-connect with capacity of switching matrix of 40 or 100 Gbit/s. The next generation of equipment will support OTN Switch with capacity of up to 1 Tbit/s. DWDM system Volga supports up to 96 channels in C-band and have an option of additional extension in L-band to achieve transmission capacity of up to 27 Tbit/s.

All Volga equipment provides a full support of OTN technology. System elements (optical transponders, amplifiers, aggregators, control units or power supplies) can be replaced in a hot mode, i.e. without turning off the equipment and traffic loss. Optical switching cards enable building 1+1 protection networks and ring topology networks.

Versions of the platform «Volga» height 10U, 6U and 3U

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DWDM Equipment

The Volga Platform Key Features

High channel capacityTransmission of up to 96 DWDM channels, up to 100 Gbit/s each or 48 up to 400Gbit/s. Up to 270 channels in expanded C+L band. Client interfaces SDH, OTN, Ethernet:

•400G: 100GE, 150GE, 200GE•100G: 100GE•40G: STM256, OTU3, 40G Ethernet•10G: 10GbE, STM64, OTU2, 4/8/10GFC•≤2,5G: GbE, STM1/4/16, OTU1

OTN technology supportTransponders and muxponders-aggregators transfer traffic in the OTN OTU1/2/3/4 format. OTN capacity matrix: 40 or 100 Gbit/s. Next generation will support OTN-matrix up to 1Tbit/s. Support FEC: Soft-FEC, Super-FEC and SD-FEC error correction algorithms increase the signal transmission quality.

Implementation of complex topologies Due to using of WSS ROADM 1x2, 1x4, 1x9 and different types of aggregators and path-protection cards the

Volga platform perfectly fits for constructing different topologies DWDM networks: with 1+1 protection, both ring and mesh. High speed optical end electronic switches, powerful digital signal processor in 100G transponders make possible to build redundant links with very fast reconfiguration (<50 ms) in case of failure.

Wide range of optical amplifiersLow-noise erbium-doped fiber amplifiers (EDFA), Raman amplifiers (RAMAN) with a power of up to 33 dBm, remote optically pumped amplifiers (ROPA), hybrid amplifiers EDFA + RAMAN.

Fractal network management system Enables control and management of all nodes at the network map with a color-coded indication. The graphical framework Fractal and the built-in Web-server significantly simplify operations on remote configuring of the Volga platform.

Dimensions and power consumptionDoubled power units: DC 36–72 or AC 220 V 50Hz. Power consumption is not more than 1200 W. Chassis height 1/3/6U and 10U, depth 300 mm, rack mounting in 19 and 21 inch racks.

full support

Cross-Connect DWDM Platform Volga

The first Russian OTN cross-connector Volga performs digital switching of ODU0/1/2/3/4 streams in non-blocking mode with a total capacity of up to 900 Gbit/s. OTN cross-switch is in development.

OTN cross-connector provides telecom operator with a powerful tool for remote management of client traffic allocation over transport optical channels. With the OTN cross-connection, each client port is no more linked permanently to a particular transport channel (as in the muxponder): client traffic can be switched manually to any line interface using the management system, or switched automatically depending on the current load of transport channels. Efficient use of the huge bandwidth of the upcoming super-channels (500G, 1T) is possible only with the use of OTN cross-connectors with digital switching matrix. New cross-connector Volga will help telecom operators to achieve new level of network control and provide unmatched management flexibility.

Technical characteristics of Volga cross-connector:

•Up to 9 cards of two types in any combination: 10x10G client card and 100G line card

•1 or 2 cross-connection cards

•Up to 900 Gbit/s in one chassis (10U size) •2 control and intercommunication units•4 slots for power supplies 1600 W •Power consumption 3200 W

Flexibility and Network ProtectionSupports 1+1 redundancy for crossconnector card, 2+2 for power supply units, and 1+1 for control unit.

ROADM CapabilityReconfigurable optical add-drop multiplexers (ROADMs) can be used for management of separate wavelengths in DWDM network, for example, for their redirection to one or another route.

The cross-switch Volga

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• Transmits up to 4 client signals 100GE (103.125 Gbps) or OTU4 RS FEC (111.81 Gbps) • SD-FEC 15% and 25% error correction algorithm • Reconfigurable in C-band laser • 2xDP-16QAM Line interface/flex rate

Aggregating transponder (muxponder) combines 4x100 Gbit/s client channels and transmits them in a two DWDM channels. The MS-400E, converts data into the OTN format and uses the new coherent SD-FEC error correction.The laser with a reconfigurable according to ITU-T 100 GHz enables organizing up to 48 DWDM channels 400G within the C-band according to ITU-T 100 GHz.

Transponder supports both differential phase and absolute phase for all the modulation formats. Supports two individual line-side channels and each channel can be programmed to 100G PM-QPSK, 150G PM-8QAM and 200G PM-16QAM for optimization of reach versus capacity.

Aggregating Transponder MS-400ETransmits 4x100 Gbit/s client signals in two subcarriers DWDM channel 2xDP-16QAM

400G Equipment

Parameter Value

Line interface, line bit rate / payload (1 or 2) x 100 Gbit/s (1 or 2) x 150 Gbit/s 2 x 200 Gbit/sClient signals (1 or 2) x 100 GE 3 x 100 GE (1, 2, 3 or 4) x 100 GEOperational wavelength range of a transmitter 1528.7–1567.1 nmReceiver overload (BER=10-12) 0 dBmReceiver sensitivity (BER=10-12) -18 dBmOutput power with an optical amplifier -10 ... +2.5 dBmOSNRT (0.1 nm, BER=10-12) 10,2 dB 14,7 dB 18,1 dBModulation 25% OH SD-FEC DP-QPSK DP-8QAM DP-16QAMAutomatic dispersion correction up to ± 70 ns/nm ± 30 ns/nm ± 30 ns/nmPower consumption ≤150 W

Optical Characteristics

Line In 1

Line Out 1

λ1

Line In 2

Line Out 2

λ2

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Aggregating transponder (muksponder) transmits client channels to one OTU-4 DWDM channel. MS-200E transmits data in OTN format using Soft-FEC error correction of 20%. Supports differential and absolute phase modulation format for all modes of operation. Supports the transfer of channels in 200G mode DP-16QAM, 100G DP-QPSK.

Optical Characteristics

200G Equipment

Parameter MS-200E-T10 MS-200E-Т20

Line interface, line bit rate / payload OTU4, 100 / max 10 x 10 Gbps

OTUC2, 100 / max 20 x 10 Gbps

Client signals 10GE, STM-64, OTU2, 8/10 GFC Output power +0 ... +3 dBmOperational wavelength range of a transmitter 1528,7–1567,1 nmReceiver sensitivity (BER=10-12) -18 dBmReceiver overload (BER=10-12) 0 dBmAutomatic dispersion correction up to до ± 55 ns/nm

OSNRT (0,1 нм, BER=10-12) c Soft-FEC 20% 11,6 dB12,5 dB

18 dB

Service channel yesPower consumption ≤170 W ≤200 W

Aggregating Transponder MS-200ETransmits up to 20 x 10 Gbit/s client signals in channel 200 Gbit/s

• Transmits up to 20 client: 10GE, STM-64, OTU2, 8/10 GFC • Soft-FEC 20% error correction algorithm • Coherent DP-16QAM, DP-QPSK modulation format • Reconfigurable in C-band laser • Automatic dispersion correction up to ± 55000 ps/nm • OSNRT from 11,6 дБ (0,1 nm, BER = 10 -12)

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Оборудование DWDM100G Equipment

Transponder ТS-100ETransmits 100GE client signals in 100 Gbit/s DWDM channel with Soft-FEC

• Transmits 100 Gigabit Ethernet client signals • Supports 100G clients protocol L4 (4x25G) and SR10 (10x10G) • OTU4 line interface, 120 Gbit/s • Coherent DP-QPSK modulation format • Reconfigurable in C-band laser • Up to 96 channels in accordance with 50 GHz wavelength channel plan • 15% Soft-FEC error correction algorithms • Automatic dispersion correction up to ± 70000 ps/nm • OSNRT from 11 dB (0.1 nm, BER = 10 -12)

Parameter Value

Line interface, line bit rate / payload OTU4, 120 / 103 Gbit/sOutput power with an optical amplifier -5 ... 0 dBmOperational wavelength range of a transmitter 1528.7–1567.1 nmReceiver sensitivity (BER=10-12) -18 dBmReceiver overload (BER=10-12) 0 dBmOSNRT (0.1 nm, BER=10-12) 11,5 dB (Soft-FEC 20%) 12,5 dB (Soft-FEC 15%)Power consumption ≤150 W

TS-100E transponder executes 3R regeneration and transforming of 100 Gbit/s 100 Gigabit Ethernet client signal into an OTN, transmits data into a line using the OTN OTU4 format and uses powerful Soft-FEC error correction algorithms. Data transmission is executed at a stabilized wavelength according to a DWDM grid. The reconfigurable laser enables organizing up to 96 DWDM channels within the C-band according to ITU-T 50 GHz.

Client In

Client Out

100GE

Tx

Line In

Line Out

DWDM

Tx

Rx

OTN

FECOTU4CFP 3R

Coherent

Rx

Optical Characteristics

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Оборудование DWDM

Оборудование DWDM

100G Equipment

• Transmits 10 client signals of 10GE, STM-64, OTU2, 8/10 GFC • Service channel ESC in line interface • Soft-FEC 15% error correction algorithm • Coherent DP-QPSK modulation format • Automatic dispersion correction up to ± 125000 ps/nm • OSNRT from 11 dB (0.1 nm, BER = 10 -12) • The unit is certified by

Aggregating transponder (muxponder) combines 10x10 Gbit/s client channels and transmits them in a DWDM channel. The MS-100E-T10 executes 3R regeneration, converts data into the OTN OTU4 format and uses the powerful Soft-FEC error correction algorithm.The transponder transfers data at a stabilized according to ITU-T 50 GHz according to the DWDM grid. The laser with a reconfigurable according to ITU-T 50 GHz enables organizing up to 96 DWDM channels within the C-band according to ITU-T 50 GHz. MS-100E-T10 is certified by BROCADE, for more information, visit the company's website.

Optical CharacteristicsParameter MS-100E-T10 MS-100E-Т10-SH

Line interface, line bit rate / payload OTU4, 120 / 10x10 Gbit/sClient interfaces’ standards 10GE, STM-64, OTU2, 8/10 GFC Output power +1 ... +5 dBm -5 ... +0 dBmOperational wavelength range of the transmitter 1528.7–1567.1 nmReceiver sensitivity (BER=10-12) -18 dBm -21 dBmReceiver overload (BER=10-12) 0 dBm -2 dBmAutomatic dispersion correction up to ± 70/125 ns/nm up to ± 40 ns/nm

OSNRT (0,1 nm, BER=10-12) 11 dB (Soft-FEC 20%)12.5 dB (Soft-FEC 15%) 13.3 dB (Soft-FEC 15%)

Service channel optional -Power consumption ≤165 W ≤100 W

Aggregating Transponder MS-100ETransmits 10x10 Gbit/s client signals in 100 Gbit/s DWDM channel with Soft-FEC

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40G Equipment

Parameter TS-40E MS-40E

Client signals STM-256, 40GE 4 x ( 10GE, STM-64, OTU2, 8/10GFC)

Line bit rate OTU3, 43 Gbit/sOutput power without an optical amplifier -10 ... +1.5 dBmOperational wavelength range of a transmitter 1528.7–1567.1 nmReceiver sensitivity (BER=10-12) -20 dBmReceiver overload (BER=10-12) 0 dBmPower consumption ≤100 W

40 Gbit/s Transponder & MuxponderTransmits 40 Gbit/s client signals via DWDM channel with Super-FEC

Transponder executes 3R regeneration and transforming of a 40 Gbit/s SDH STM-256 client signal into an OTN, transmits data using the OTN OTU3 format (43 Gbit/s).

Aggregating transponder (muxponder) combines 4x10 Gbit/s client channels and transmits them into a DWDM channel. In any of the 4 channels change the type of client load can be non-stop line of traffic.

Equipment executes 3R regeneration, and uses the powerful Super-FEC G.975 I.7 error correction algorithm. Data transmission is executed at a stabilized wavelength according to a DWDM grid. The laser with a reconfigurable wave length enables organizing up to 96 DWDM channels with the C-band ITU 50-GHz wavelength channel plan.

Client In

Client Out

STM-64Rx

Tx

Line In

Line Out

OTU3 DWDMTx

RxOTNFEC Coherent

Rx

Optical Characteristics

• OTU3 line interface, 43 Gbit/s • Super-FEC G.975 I.7 error correction algorithm • Coherent DP-QPSK modulation format • Reconfigurable in C-band laser • Up to 88 channels in accordance with 50 GHz wavelength channel plan • Automatic correction dispersion up to ± 55000 ps / nm • OSNRT = 9.0 dB (0.1 nm, BER = 10 -12)

Rx

Tx

Client In 1

Client Out 1

10GE, STM-64, OTU2DFB

Rx

Tx

Client In 2

Client Out 2

10GE, STM-64, OTU2 XFPDFB

Rx

Tx

Client In 3

Client Out 3

10GE, STM-64, OTU2 XFPDFB

Rx

Tx

Client In 4

Client Out 4

10GE, STM-64, OTU2 XFPDFB

DWDM

Tx

Line In

Line Out

OTU3Rx

OTNFEC

XFP

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Оборудование DWDM

10G Equipment

• Transmits client signals of 10GE, SDH STM-64, 8/10 GFC • Line interface OTN OTU2 • 10 transponders on the 10G in a single unit • Super-FEC G.975 I.7 error correction algorithm • Line and client interfaces SFP+

Rx

TxSFP+

Rx

TxSFP+

Rx

TxSFP+

Rx

TxSFP+DFB

Line In 1

Line Out 1

OTU2

TT-10EDWDM

Rx

TxSFP+DFB

Line In 2

Line Out 2

OTU2

Rx

TxSFP+DFB

Line In 10

Line Out 10

OTU2

Client Out 1

Client In 1

10GE, STM-64,GFC/10GFC8

Client Out 2

Client In 2

10GE, STM-64,GFC/10GFC8

Client Out 10

Client In 10

10GE, STM-64,GFC/10GFC8

OTNSuperFEC

X-Connect

. . .

. . .

. . .

. . .

Десна 2

λ1

λ2

λ10

Parameter ValueLine bit rate OTU2, 10 Gbit/sOutput power without an optical amplifier -1 ... +3 dBm *Quantity SFP/SFP+ 10Operational wavelength range of a transmitter 1528.7-1527.1 nmReceiver sensitivity (BER=10-12) -24 dBm *Receiver overload (BER=10-12) -7 dBm *Power consumption ≤80 W

*Depending on the type SFP+

Transponder ТT-C10E10 transponders 10 Gbit/s with Super-FEC and OTN X-connect

Optical Characteristics

10-channel 10G transponder with Super-FEC supports any 10 Gbit/s data formats on client interfaces: 10 GE, STM-64 etc. Each client channel is converted in OTN OTU2 format and sent to the selected line port. All channels on the line side can be combined by an external multiplexer for transmission in a single fiber using CWDM or DWDM technology. Tunable SFP+ or “color” SFP/SFP+ with a fixed wavelength can be used on each line port. The use of standard SFP+ connectors significantly increases the cost-efficiency of the solution. High port density enables effective usage of the rack space. The device can be configures in 5-channel mode with a line redundancy 1+1. In this case each client channel is sent to two line ports: main and backup. These two line channels bearing the same client channel can be transmitted on different fibers or with OTN X-connect between the channels. The transponder supports Super-FEC error correction that guarantees a high quality of 10G signal. Equipment

is fully compatible with OTN networks. OTN provides powerful capabilities for channel management, signal monitoring, and traffic statistic analysis.

full support

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10G Equipment

Transponder TD-10ETransmits 10 Gbit/s client signals in DWDM channel with Super-FEC

• Transmits 1/2 client signals of 10GE, STM-64, OTU2, 4/8 GFC • OTN OTU2 line interface • Super-FEC G.975. I.7 with a redundancy up to 25% or FEC G.709 • 1+1 protection for linear and ring DWDM systems • Reconfigurable in C-band laser • Up to 88 channels in accordance with 50 GHz wavelength channel plan • OSNRT = 9.0 dB (0.1 nm, BER = 10 -12)

Dual TD-10E transponder executes 3R regeneration of a 10 Gbit/s client optical signal and transforms a wavelength into an optical DWDM channel. Reconfigurable in C-band laser can be used for organization of up to 96 DWDM channels in accordance with the 50 GHz wavelength channel plan. The FEC version corrects errors according to FEC G.709 or Super-FEC ITU G.975 I.7 standards.

Rx

Tx Rx

Tx

Line In 1

Line Out 1

OTU2

Client In 1

Client Out 1

10GE, STM-64, OTU2

Rx

Tx Rx

Tx

Line In 2

Line Out 2

OTU2

DWDMClient In 2

Client Out 2

10GE, STM-64, OTU2

XFP

XFP

OTNFEC

Parameter TD-10 TD-10F TD-10ELine bit rate OTU-2, from 11.10 Gbit/sClient interfaces’ standards 10GE, STM-64, OTU2Output power <+4 dBmOperational wavelength range of the transmitter 1528.7–1567.1 nm Receiver sensitivity -18 /- 24 dBm *Receiver overload -5 ... -3 dBm

Error correction algorithm none FEC G.709 SuperFEC ITU G.975 I.7

Power consumption ≤ 45 W

Optical Characteristics

* Specifying in order

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10G Equipment

Aggregator MS-DC10FXPTransmits up to 8 client signals in OTU2 channel with FEC and OTN X-connect

• Transmits client signals of GE and SDH STM-1/4/16, OTU1 • 2 lines interfaces OTN OTU2, 10 Gbit/s • Error correction algorithm G.709 • Aggregates 4xSTM-16, 8xSTM 1/4, 4xOTU1, 8xGE or multipurpose channels up to 10 Gbit/s • OTN X-connect matrix from 40 Gbit/s • 2 lines outputs DWDM XFP and SFP+ or reconfigurable in C-band laser (MSA) • Up to 88 channels in accordance with 50 GHz wavelength channel plan

Aggregator MS-DC10FX combines 8 client channels Gigabit Ethernet, SDH STM-16 (or their arbitrary combination) in two line channels OTN OTU2, 10 Gbit/s. The device supports cross-commutation on the ODU0/ ODU1 level. Aggregator performs 3R-regeneration of the signal, and error correction according to G.709. Two types of line interfaces are supported: XFP-modules and tunable lasers.

Rx

TxSFP

Rx

TxSFP

Rx

TxSFP

Rx

TxXFPDFB

Line In 1

Line Out 1

OTU2

DWDM

Rx

TxXFPDFB

Line In 2

Line Out 2

OTU2

Client Out 1

Client In 1

Client Out 2

Client In 2

Client Out 8

Client In 8

GE, OTU1STM-1/4/16

GE, OTU1STM-1/4/16

GE, OTU1STM-1/4/16

OTNFEC

X-Connect

. . .

. . .

λ1

λ2

DFB

DFB

DFB

Parameter MS-DC10FXP-Q3F MS-DC10F-Q3FLine bit rate 2xOUT2, 10.7 Gbit/sInterface type XFP, SFP+ MSAQuantity client interfaces 4/8Client interfaces’ standards 4 x (STM-16/OTU1) или 8 х (GbE/STM-1/STM-4)Output power defined by XFP < +4 dBmOperational wavelength range of the transmitter - 1528.7-1567.1 nmReceiver sensitivity - -18 / -24 dBmReceiver overload - -5 ... -3 dBmPower consumption ≤ 45 W

Optical Characteristics

full support

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2,5G Equipment and Below

2,5 Gbit/s Transponder & Aggregator4 transponders up to 2,67 Gbit/s in DWDM channel with Super-FEC

• Useful for organizing 1+1 and ring protection • Super-FEC G.975 I.3 or FEC G.709 error correction algorithm • OTN OTU1 line interface • OSNRT = 7.0 dB (0.1 nm, BER = 10 -12)

Aggregator MD-D3ES transmits 1 client channel STM-16, or combines 2 client channels GE, STM-1/4 in a line channel OTN OTU1. The aggregator performs 3R-regeneration of the signal, and error correction according to G.709 or G.975 I.3 (Super-FEC). Two aggregators are combined in a single card.

TQ-3ES transponder executes 3R regeneration of a 10 Gbit/s client optical signal and transforms a wavelength into an optical DWDM channel. Reconfigurable in C-band laser with the 50 GHz wavelength channel plan. The FEC version corrects errors according to FEC G.709 or Super-FEC ITU G.975 I.3 standards.

SFP module is used as a line interface of the aggregator. DWDM SFP can be used for data transmission in DWDM network.

Optical CharacteristicsParameter TQ-3ES MD-D3ES

Line bit rate 2,67 Gbit/s, OTU1

Client interfaces’ standards 4 х (GE, STM-1/4/16) 2 х (STM16,FC200) or 4 х (GE, STM-1/4), and any combination

Error correction algorithm Super-FEC G.975 I.3 or FEC G.709

Operational wavelength range of a transmitter 1528,7–1567,1 nm

Power consumption ≤ 25 W ≤ 30 W

Aggregator MD-D3ES

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Aggregator STM1-21E1 Transmits up to 21 E1 client interface in STM-1 channel

• Transfer client signals E1 • STM-1 Line Interface • Internal or external synchronization

The E1 channel aggregator STM1-21E1 is designed for receiving / transmitting twenty-one streams in E1 format (2048 Kbit / s) from / to the SDH transport network of the STM-1 level. Each port of the device works in full-duplex mode. The client E1 channels are connected to the device via RJ-45 connectors. The signals can be synchronized with two inputs (2048 kHz) and two outputs (2048 kHz), in accordance with G.703 / 13.

2,5G Equipment and Below

Parameter ValueLine bit rate STM-1Standarts of client interfaces E1 (2048 Kbit/s)Quantity client interfaces 21Operational wavelength range of a transmitter 1270 -1580 nmPower consumption ≤ 20 W

Optical Characteristics

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Optical Amplifiers

EDFA & RAMAN Optical Fiber AmplifiersThe optical amplifiers family includes preamplifiers, boosters and linear erbium doped amplifiers (EA), and also Raman amplifiers (RA) with power up to 2 W

• 1 and 2 cascaded amplifiers • Controls transient processes when adding channels • Low noise figure • Flat amplifying grid in C-band • Raman amplifiers with pump power up to 2 W (33 dBm) • Stabilization modes for an output power and amplification factor

Amplifiers increase the power of optical signals without an optical-to-electrical transduction. Amplifiers with one, two or three amplification stages are available. In multi-stage amplifiers, inter-stage access if provided

for connection of dispersion compensators. The use of gain flattening filters (GFFs) guarantees a flat gain grid in С-band. Each amplifier has a built-in tunable attenuator that enables smooth gain adjustment.

K1

ФП1

GFF

1%

VOA

ФП2

1%

EDF

K2

ФП3

GFF

1%

ФП4

1% 1%

In Out

MONOut2 In2

In Out

DCU

. . . . . .

DWDM DWDM

EDFA

EDF

ДН1 ДН2 ДН3

EDF

Parameter RA EA

Spectral range 1528.7–1567.1 nmOutput power +30 dBm (RAMAN) +10 ... + 26 dBmNumber of amplifying stages - 1-2Number of leveling GFF filters - 1-2Spectral flatness per 10 dB of amplification - ≤0,5 dBPower adjustment range with an attenuator 10 - 20 11-18; 14--24; 25-36

Optical Characteristics

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Optical Amplifiers

Hybrid Amplifier EDFA + RAMANCombination of Raman and erbium-doped fiber amplifier in one case

• EDFA + RAMAN in one case • High spectral flatness • Low noise figure

Hybrid amplifier is a combination of Raman amplifier and erbium-doped fiber amplifier (EDFA). Raman pumping with the power of up to 600 mW amplifies the emission in the line before its input to EDFA and decrease an effective noise factor of the amplifier. Due to lower noise factor it is possible to achieve larger distances between amplifiers and decrease network operating costs. Inter-stage access for connection of dispersion compensators can be optionally provided.

EDFA

λ2

MUX

WDMSignal

Counterpumping

Signal

Гибридный усилитель

OutIn

Pump1 Pump2

λ1

DWDMDWDM

Remote Optically Pumped Amplifier ROPAIncrease of spans between two network nodes due to remote amplification of signal

The use of ROPAs makes it possible to increase the distance between two network nodes. The ROPA is an erbium-doped fiber amplifier that is pumped remotely using wavelength 1480 nm either in working fiber or in an additional fiber. The device consists of two functional units: a passive unit (hermetically sealed box with a fiber-optic circuit) and an active unit (one or

two pumping lasers). Two types of ROPA configuration are used: with a backward pumping (i.e. the pumping is provided from the receiver side) and with a forward pumping (i.e. the pumping is provided from the transmitter side). Working modes of amplifiers and the gain in distance can vary in different configurations, and depend on the required link capacity.

The application of the ROPA scheme for a span of 500 km

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Оборудование DWDMОборудование DWDMDWDM Equipment

Optical unit with EADM amplifierAggregation, dispersion compensation and amplification in one unit

• Managed multiplexer / demultiplexer up to 16 channels • Optional built-in amplifier, preamplifier and dispersion compensator • Adjustment step of attenuator 0.1 dB • Transmission range up to 90 km (SH), up to 150 km (LH), up to 230 km (ULH)

The optical unit provides multiplexing of 16 channels in an optical fiber and their demultiplexing in the return channel, and also (optionally) their amplification and dispersion compensation.

When combined with a 10-channel 10G transponder TT-C10E, the unit allows to build a wide range of economical DWDM or CWDM-systems with transmission range up to 230 km along a pair of optical fibers. There are three variants of the block layout:

Without amplifiers (SH-short haul):•A multiplexer in the forward channel;•A demultiplexer in the reverse channel;

With one amplifier (LH-long haul):•A multiplexer in the forward channel;•Amplifier, dispersion compensator and

demultiplexer in the return channel;With two amplifiers (ULH-ultra long haul):

•Multiplexer and amplifier in a forward channel;•Amplifier, dispersion compensator and

demultiplexer in the return channel. The range calculation is performed for the following characteristics of the fiber: attenuation 0.22 dB / km, dispersion 19 ps / nm / km.

Short distances of up to 90 km

The average distances are 90 - 150 km

Large spans 150 - 230 km

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Оборудование DWDMОборудование DWDM

Optical Units VmuxVariable optical multiplexer and demultiplexer

• Managed multiplexer / demultiplexer • Step size 0.1 dB attenuator • Controls transient processes when adding channels • Low noise figure • Flat amplifying grid in C-band

Units are designed to combine separate DWDM channels in one multi-channel line DWDM signal (multiplexer) or to extract separate DWDM channels from a multi-channel line DWDM signal (demultiplexer).

Optical power in each channel can be adjusted using built-in optical attenuator. Attenuation value for each channel can be managed using a network management system (NMS). Units support up to 40 or 48 channels.

Optical Spectrum Analyzer OPMMeasurements of the spectra in DWDM systems

The unit performs spectrum measurement for signal rates 2.5 Gbit/s (direct and external modulation), 10G, 40G and 100G (with limitations). Channel optical power can be measured in the range -40…-10 dBm. Noise floor is -55 dBm. The unit is managed using a web interface that displays the spectrum of multi-channel optical signal and a list of channel powers for different formats of modulation. The unit is designed for use in the “Volga” chassis.

• C-band 1528 — 1558 nm • Frequency grid 50 GHz • 4-lines optical switch

DWDM Equipment

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ROADM parameter 1/1 CA 2/1 4/1 9/1Span between channels 50GhzNumber of input / output channels 96/96 96 x 2/96 96 x 4/96 96 x 9/96Frequency band 192.10... 196.00 Thz 191.30... 196.05 ThzChannel loss (“Line in / Line out”) 6.5 dB 6.5 dB 7.5 dBChannel loss (“add”) 6.5 dB 6.5 dB 7.5 dBChannel loss (“drop”) ---Channel loss (“blocked”) 40 dBTuning range of attenuator 15 dBTuning step of attenuator 0.1 dBTime of channel switch 250 msTime of attenuator switch ≤ 50 msPower consumption ≤10W

ROADM – the Solution for Multichannel NetworksVersatile add/drop of lightpath channels for the network upgrade and protection

Reconfigurable multiplexers ROADM-x/1 (x=2, 4,9) are intended for flexible routing and cross-connect of optical channels on core network nodes. Multiplexers ROADM-1T/40C enables you to extract several optical channels from input DWDM signal, and to add client channels into output DWDM signal. Multiplexers ROADM-x/1 (x=2,4,9) enables you to extract arbitrary channels from 2, 4, or 9 input DWDM signals and combine them into one output DWDM signal. An optical equalizer has one

DWDM input port and one DWDM output port. An output signal power in each multiplexer can be tuned channel-by-channel in the Network Management System (NMS) using internal attenuators. All ROADM units support the WSS redundancy that allows you to reconfigure the path of optical channel when receiving the control signal. This technology allows you to provide redundancy for high bit-rate channels 100G and 40G at a minimal cost. The reconfiguration of the route takes less than 40 sec.

Optical Characteristics

Functional Diagram

DWDM Equipment

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Compact System Volga Metro is solution for regional and metro networks using DWDM or CWDM technologies. Main load is 10x10Gbit/s also you can use 100G or 400G. The system provides the ability operator to organize the traffic at distances up to 230 km with 16 channels up to 10 Gbit/s each. Equipment Volga fully supports OTN technology. The system is controlled by the built-in EMS management system.

Expansion Slot : can remain free and be used to increase the System capacity. For example in the Expansion Slot can be set the Transponder Unit MS100G, TQ-3ES or Aggregator Unit MD-D3ES to organize backup or expansion the System up to 16 channels.

Optical Slot: provides multiplexing multiplexes the 16 channels in a optical fiber and their demultiplexing in a return channel; and (optionally) its amplification and dispersion compensation.

Transponder Slot: transponder TT-C10E supports 10x Client signals in such formats as Ethernet, SDH,and Fiber Channel with flows up to 10 Gbit/s. Due to Forward error correction function Super-FEC the System provides a high-quality signal over long distances. Transponder

3U Compact Metro DWDM System 16 channels universal compact solution Volga Metro

Compact solution Volga Metro with three slots:�Expansion Slot �Optical Slot �Transponder Slot

���

System configuration options

- Chassis- Block Ural- Unit TT-10E (10x10G)- Free slot

- Chassis- Block Ural- Unit TT-10E (10x10G)- Block TQ-3ES (4x2.5G)

- Chassis- Block Ural- Unit TT-10E (10x10G)- Block MS-100E (100G)

Standard Configuration Parameter Basic Low-speed channels Extension 100GLinear interface OTU2 OTU1, OTU2 OTU1, OTU2, OTU4Operational wavelength range of the transmitter 1528,7–1567,1 nmClient ports SFP / SFP + 10 16 20Power consumption up to 285 W 310 W 450 WControl system Built-in EMS

Slot TT-S10E fully supports the OTN Cross-Connect Matrix up to 40 Gbit/s. Tunable SFP+ or ‘color’ SFP+ with a fixed wavelength can be used on each line port.

The chassis has two types of a redundant power supply: DC 36-72 V or AC 220 V. The chassis has height of 3U and depth of 300 mm for installation in a standard rack 19/21''. The System is controlled by a built-in element management system EMS. The control unit allows you to organize the service channels at the operating wavelength.

Compact Systems

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Compact Systems

Compact system for transmission of 10 Gbit/s signals with Super-FEC. The system supports any 10 Gbit/s data formats on client interfaces: 10 GE, STM-64 etc. Each client channel is converted in OTN OTU2 format and sent to the selected line port. All channels on the line side can be combined by an external multiplexer for transmission in a single fiber using CWDM or DWDM technology.

Tunable SFP+ or “color” SFP/SFP+ with a fixed wavelength can be used on each line port. The use of standard SFP+ connectors significantly increases the cost-efficiency of the solution. High port density enables effective usage of the rack space. The device can be

Compact DWDM System 10x10 Gbit/s V1-TT-C10E Transmission of 10 client signals 10 Gbit/s with Super-FEC and OTN X-Connect

• Transmission of 10 client signals 10GE, SDH STM-64, 8/10 GFC

• Line interface OTU2 • Up to ten transponders, up to 10G each • Super-FEC G.975 I.7 error correction algorithm • Lines and clients interfaces SFP+ • ESC control channel at a separate wavelength • Compact standalone unit 1U, 19”

full support

System V1-MS-100E-T10 aggregates 10 client interfaces 10 Gbit/s and transmits them into a single 100G DWDM channel. The traffic protocol on 10G client ports can be changed without interruption of the line traffic. Muxponder performs 3R-regeneration of the signal, converts data to OTN OTU4 format and implements Soft-FEC error correction. A stabilized wavelength is used for data transmission in accordance with standard DWDM grid. The laser can be tuned across the C-band to cover

Compact 100G DWDM System V1-MS-100ETransmission of 10 client signals 10 Gbit/s each in a DWDM channel 100 Gbit/s with Soft-FEC

• Transmission of 10 client signals 10GE, STM-64, OTU2, 8/10 GFC

• Line interface OTU4, 120 Gbit/s • Error correction Soft-FEC • Coherent modulation format DP-QPSK • Automatic dispersion compensation up to 70000 ps/nm

• OSNRR = 12.5 dB (0.1 nm, BER=10-12)

Specifications•Linear interface, the transmission speed in the line

OTU4, 120/103 Gbit / s•Input power -5 ... 0 dBm•Receiver Sensitivity (BER = 10-12) -18 dBm•Receiver overload (BER = 10-12) 0 dBm•OSNRT (0.1 nm, BER = 10-12) 12.5 dB•Power consumption is not more than 235 W

any of up to 96 channels (with 50 GHz spacing). The system has an Ethernet port that enables to arrange service channel on a working wavelength. The device consists of: channel-forming DWDM unit, control unit, two power supply units, and fans unit.

configures in 5-channel mode with a line redundancy 1+1. In this case each client channel is sent to two line ports: main and backup. These two line channels bearing the same client channel can be transmitted on different fibers or with OTN X-connect between the channels. The transponder supports Super-FEC error correction that guarantees a high quality of 10G signal. Equipment is fully compatible with OTN networks. OTN provides powerful capabilities for channel management, signal monitoring, and traffic statistic analysis.

Specifications*•Linear interface, transmission

speed OTU2, 10 Gbit / s•Number of client SFP / SFP + 10•Power consumption no more than 155 W

* Receiver parameters depend on SFP +

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Compact Systems

• Client interfaces STM-1/4/16, GE, OTU1, connection of client interfaces with proprietary protocols at speeds up to 2.5 Gbit / s

• Built-in CWDM MUX / DEMUX • Up to 8 CWDM channels, when cascading up to 16

• Redundancy of power supplies • Optical control channel • Compact housing 1U, 19'

The Irtysh system allows transmitting client signals up to 8 CWDM channels. The equipment executes 3R regeneration of a signal, transforms it into spectral channels which are combined into a baseband CWDM signal by a built-in optical multiplexer.

• Client interfaces STM-64, 10GE, OTU2, (Fiber Channel 1/2/4/8/10 GFC option) and STM-1/4/16, GE, OTU1

• Built-in CWDM MUX / DEMUX • Possibility of line reservation • Up to 8 CWDM channels: 2x10G + 6x2.5G; 4x10G; 8x10G

• Redundancy of power supplies • Power consumption 60 W • Optical control channel • Compact housing 1U, 19 «

The Irtish allows organizing up to 8 CWDM channels in 2 directions. The equipment executes 3R regeneration of a signal, transforms it into spectral channels which are combined into a baseband CWDM signal by a built-in optical multiplexer. All the optical connections with a

Irtysh Compact CWDM System Up to 2.5 Gbit/s Increases a fiber-optic communication line bandwidth using Coarse Wavelength-Division Multiplexing technology

Specifications

• Number of optical channels: 4, 8 • Transmission length: 60, 80 or 120 km • Doubled power units: 36-72 V DC, power

consumption 60 W • Network management: SMNP, Fractal • Built-in Ethernet Switch 2xSFP GE,

6xRJ-45 Fast Ethernet

Irtysh Compact CWDM System Up to 10 Gbit/sThe best solution for organizing cost-effective speed channel

multiplexer are done inside the unit; this increases its reliability and usability.

Specifications

• Number of optical channels: 8 • Path redundancy 1 + 1 • Transmission length: 40 or 60 km • Doubled power units: 36-72 V DC, power

consumption 60 W • Network management system: SMNP, Fractal • Built-in Ethernet Switch, 2 x SFP GE, 6 x RJ-45 Fast

Ethernet

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Разработка и проектирование

Network Management System NMS Fractal The optical network management system NMS Fractal is a multi-user, multi-level control environment, and is intended for operation control and monitoring of digital transport systems PreOTN, OTN, including DWDM, CWDM. «Fractal» provides network configuration management, monitoring and management of troubleshooting, quality management and security management, as well as logging. Flexible filter settings allow you to quickly and accurately analyze the operation of the system and identify pre-emergency situations in the early stages. Thus, the level of equipment management is combined with the elements of the network management layer. NMS supports the following main functions:

Configuration management•Setting the parameters of network elements,

including the input of passive network elements that do not have electronic identification elements (microcontrollers);

•Synchronization of NMS databases and network element for all supported types and versions of network elements;

•Collection of identification information about the elements of the network;

•Graphical representation of sections (bayface layout), installed boards and devices, as well as their technical state, including color indication of the emergency state of connections, both optical levels of OTN (channels, multiplex sections, etc.) and electrical levels of OTN (OTU1- 4, ODU0-4);

Troubleshooting control and management•Providing information about faults and changes in

the status of monitored network elements (≤ 1 min);•Maintenance of detailed fault logs;•Support of sensors for monitoring and control of

external alarm at the facility;•Notification by e-mail, as well as audible warning of

the operator when a fault occurs;•Control of health monitoring modes and the

receipt of emergency and other messages from network elements, blocks and I / O ports (including «masking» and changing the category of alarm);

Quality management•Activation/deactivation of quality parameters

measurement for network elements and sections; •Maintenance of a detailed system log of quality

parameters on VC, MS, RS, and OTU (FEC) levels with an option to print all available information or to save it on an external storage.

Integrated element manager (EMS). Operation of a Volga chassis

Principal scheme of the network is displayed

Security management•Identification and authentication of the user, as

well as the demarcation of access rights based on the role model;

•Domain organization of network elements;•Logging and passive audit;•Control the integrity and security of stored and

transmitted information;

ScalabilityNMS Fractal is implemented according to the «client-server» architecture in the Windows environment (Microsoft SQL Server is additionally required) and can be delivered in the following variants, differing in the management structure:

•Management of a single administrative domain: «Standard» - up to 400 network elements, «Extended» - more than 400 network elements, monitoring the integrity and security of stored and transmitted information;

•Management of many distributed administrative domains, with a central management node. The maximum number of domains is up to 100.

Network Management System

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Разработка и проектирование Solutions and Services

Research and Development Center The biggest Russian competence center for fiber optics

The Scientific and Technical Center T8 has completed the development of a high-speed dense wavelength division multiplexing platform with total bandwidth of 27 Tbit/s.

The T8 research laboratory was established in 2013. The laboratory of the T8 Scientific and Technical Center carries out research in the field of laser physics and optical science. The T8 Scientific and Technical Center is a resident of the Skolkovo Innovation Center. Telecommunications field is a priority for the laboratory. The majority of research is done for T8, but the center also carries out research and development as a commercial service. Long-distance data transmission is a priority research and development area.

The T8 Scientific and Technical Center measurement laboratory is equipped with state-of-the-art tools and is the largest in Russia. More than 200 devices are available for performing experiments and research on optical effects. The key scientific developments of the laboratory are covered with patents.

The Center keeps working to reduce the dependence on imported components. The 100G optical module based on discreet elements has been completed. This module is to be the heart of the next-generation system. At that, the use of Russian-made 100G module instead of foreign analogues is an important step towards the further development of the Russian optical telecommunication systems.

One of the critical areas of the center research is development of a platform supporting up to 40 Tbit/s per single fiber. In order to implement the project, the team is working on technical solutions for transmission of up to 400 channels in a 25 GHz grid. In addition, the developing of a 1-Tbit/s bandwidth DWDM platform with OTN cross-connect is continuing actively. Transponders and aggregators with OTN cross-connect matrix with a capacity of 40 Gbit/s are already available for customers.

All equipment being developed is fully compatible with the Volga platform. T8 Scientific and Technical Center specialists regularly participate in scientific conferences and publish articles in leading Russian and international scientific journals. Scientific articles of our specialists are available on our T8 website.

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Solutions and Services

DWDM Network Designs and CalculationEngineering department of the company performs calculation of DWDM networks of any complexity in short terms. Our engineers calculate more than 200 projects every year, and dozens of them reach the practical implementation stage.

Based on initial data provided by customer (scheme of the network and distances between nodes, type and quantity of fibers on each span, plans of the network development) the engineering department solves the following tasks:

•Development of a channelizing scheme and a principal scheme of the network

•Calculation of estimated quality of transmission in designed communication channels, and network reliability analysis;

•Optimization of networks to decrease capital and operating expenses.

We have a profound experience in designing telecommunication systems based on new formats of modulation of the optical signal. We developed methods of optimization that make it possible to achieve optimal performance for combined networks where both coherent channels 100/200 Gbit/s and noncoherent channels 10 Gbit/s are transmitted simultaneously. Due to this our customers successfully put in operation 100G channels on an old infrastructure that was intended for 10G channels.

We use self-engineered specialized software for most effective design of DWDM networks. For calculation of networks of high complexity a working group is usually created with experts of R&D department of the company. R&D department performs theoretical analysis and numerical simulation of DWDM networks of complex topology, simulation of new components (optical amplifiers, transponders and other devices), simulation and analysis of linear and nonlinear effects using the OptSim™ software and other tools.

100 km NEDFA

10G transponders TD-10, MS-10FX

EDFA

DCU

10

MU

X

TX

10

40 TX

100 TX

–

–

40G transponders TS-40E, MS-40E-Q1040– Coherent 100G transponders TS-100E, MS-100E-T10100– Dispersion compensatorDCU

10TX

40TX

100TXD

EMU

X

100 kmEDFA 100

– Coherent 100G transponders TS-100E, MS-100E-T10

EDFA

DEM

UX RX

100RX

100

MU

X

TX

100 TX

100

N

Multispan DWDM lines

100G transponders in traditional DWDM line with passive dispersion compensators

In existed DWDM lines there are passive dispersion compensators, which were placed at intermediate amplification nodes. The most economical way of the bandwidth Increasing of such a lines is step-by-step substitution of “old” low speed channels on “new” higher speed channels. In this case for the long time period it is possible coexistence of channels of different speeds and different modulation formats like 10G NRZ, 40G DPSK, 100G DP-QPSK, 200G DP-16QAM. In these configurations there is a necessary to use periodical passive dispersion compensation. T8 engineers investigated functionality of the 100G transponders in DWDM line with periodical dispersion compensation. The OSNR margin in 1600 km DWDM line is equal to 7.5 dB.

Coherent DWDM systems of a new generationThe use of coherent transponders makes it possible to build DWDM lines without passive dispersion compensators. Mathematical dispersion compensation takes place in the receiver’s DSP (digital signal processor).

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Solutions and Services

Basic configurationsThe most cost-efficient solutions used erbium doped fiber amplifiers (EDFA). The simultaneous use of a power amplifier and a preamplifier allows transmission of 16 optical channels for a distance up to 155 km and 80 channel for a distance up to 130 km. Simultaneous

DWDM Lines With Long Spans

up to 155 kmTran

spon

ders

Tran

spon

dersDWDM line DWDM line

up to 225 kmTran

spon

ders

Tran

spon

ders

DWDM line

Tran

spon

ders

Tran

spon

ders

Counter Ramanpumping

up to 260 km

Tran

spon

dersDWDM line

Counter Ramanpumping

Associated Ramanpumping

Tran

spon

ders

up to 275 km

EDFA2

MU

X

Amplifier with remotePumping (ROPA1)

EDF

Amplifier with remotePumping (ROPA2)

EDFA1

EDF

Span1 Span2 Span3

WDM WDM WDM WDMDCF

TXTXTXTXTXTXTXTXTXTX

RXRXRXRXRXRXRXRXRXRX

DEM

UX

λ 1λ 2λ 3λ 4

λ 1λ 2λ 3λ 4

Transponders10x100G

Transponders10x100G

Counter Ramanpumping

Remote pumping

ROPAExtra-long sections of DWDM line up to 475 km. The ROPA technology (remote optical pumped amplifier) is used for remote pumping of the erbium doped fiber (EDF). Amplifier is pumped in a separate fiber. In the

Raman amplifyingUsing Raman amplifier units in addition to EDFA transmission and receiving amplifiers allows to organize transmission of 100 Gbit/s channels for a span length up to 260 km in systems with 16 optical channels. Transmit is possible 80x100Gbit/s channels

with up to 235 km span. Stock 3 dB in the middle of the span. Adding the accompanying Raman pumping allows us to increase these figures, respectively, to 275 km and 250 km.

use of the transmission amplifier and preamplifier allows to organize 16x100 Gbps channels in lines up to 225 km or 80 channels in lines up to 205 km in length. Stock 3 dB was taken into account in the middle of the span.

laboratory of T8 demonstrated a dense wavelength division multiplexing system transmitting 10 x 100 Gbit/s per channel over 500 km without the use of regenerators or erbium doped fiber amplifiers.

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Оптическое КТВSolutions and Services

Technical Support & LearningWe provide full technical support of DWDM and CWDM telecommunication equipment. Services are available 24/7 for all customers with a service contract in place. The scope of technical support depends on a program that was chosen by customer. Response time to customer inquiries starts from 15 min depending on the terms of the contract.

We have large equipment replacement fund and are ready to deliver and replace the necessary equipment promptly for our customers at the entire territory of Russia.

Customer inquiries are handled using an automated inquiry management system (IMS). Our customers are provided with access to an information portal of the Service Desk.

Technical support includes the following services

•Remote fault diagnostics (using phone, e-mail, or remote access provided by customer);

•On-site fault diagnostics;•Installation and connection of replacement

equipment, recovery of configurations;•Preventive upgrade software;•Provision of access to an information portal of the

Service Desk;•Preventive audit of the network;•Repair of the failed blocks;•Recommendations and guidelines for installation

and commissioning of equipment For our customers we organize different trainings. The main purpose of course is expanding theoretic knowledge of DWDM technology, and acquiring practical experience in managing and configuring of real WDM. The considerable part of course’s time is dedicated to practical questions of construction and operation of DWDM networks.

Special attention is paid to practical work with equipment

An integral part of training is theoretical preparation

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greatly if several monitoring zones are arranged. If a person or car approaches, or if works are in progress near a protected object, the Dunay system is transmitting an alarm event to the operator’s computer indicating the source location. The system permits to detect any kind of activity that is causing water or soil vibrations. When installing the system with a client, T8 specialists set

the system individually by taking into consideration the particular features of every facility.

Areas of application of the system:

•Pipelines monitoring and diagnostics:• Routine works monitoring. • Protected zone monitoring.

•Perimeter guarding.•Transportation infrastructure objects monitoring:

• Rail tracks.• Flight strips.• Bridges, tunnels, highways.

•Communication lines guarding.

Оптическое КТВ

Dunay Distributed Fiber Optic Security System Distributed sensor of vibration and acoustic actions based on the coherent reflectometer for security systems

Fiber Optic Security System

OPTICALFIBER

Distributed acoustic sensing (DAS) uses standard single-mode optical fiber (G.652) as highly-effective distributed sensitive element, detecting soil vibrations (acoustic vibrations) at distance of up to dozens of kilometers along the optical cable. Dunay system Hardware detect, localize, classify and alert on activity along the entire length of the cable. It offers cost-effective method of around-the-clock automated environment activity monitoring over long-distance linear objects.

«Dunay» system is designed in 3U chassis to be installed in standard 19” telco rack. Chassis has three slots for: receiving/transmitting unit (coherent reflectometer), amplifier module, and industrial computer for data processing and transmission to remote server. «Dunay» system can operate independently or may be integrated to any exiting security system. Open API allows developers connect Dunay system to all modern security applications using Ethernet channels.

The system operation is based on coherent reflectometry principle. Optical impulses are sending to the fiber periodically, part of the light is backscattered by fiber irregularities. Fiber microdeformations caused by vibro-acoustic impact change the parameters of the scattered (reflected) signal. The changes in the backscattered signal interference pattern analyzing to identify the spot and nature of the impact on fiber.

One of the main Dunay applications is the development of early detection systems for critical infrastructure. Since an acoustic sensor allows detecting signals from sources located at dozens or even hundreds of meters from a source, a system operator gets an alarm signal before a trespassing. One standard optical block of the system monitors a zone of up to 40 km, or up to 75 km with remote signal pumping (ROPA).

Dunay detects: various events throughout a zone with an accuracy of 10 meters: approach to a guarded zone, movement along the border, or trespassing the monitored zone border. Detection accuracy increases

Operator window with maps and a list of events at the turn.

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www.t8.ru

The information in this document is provided for general acquaintance with the company T8, manufactured equipment and new developments. The information provided may be predictive and may differ from actual results. The published information is not a public offer and an offer to conclude deals. T8 reserves the right to change this information at any time without prior notice.

Is a registered trademark of Ltd. T8. All rights reserved.

T8 Company

44-1, Krasnobogatyrskaya street, Moscow, 107076, RussiaTel.: +7 (499) 271-61-61, +7 (495) 380-01-79 Fax: +7 (495) 380-01-39

51-J, Magnitogorskaya street, St. Petersburg, 195027, RussiaTel.: +7 (812) 677-36-11Tel.: +7 (812) 677-36-12

info@t8.ruwww.t8.ru