Slide No. Slide No. 11 Optical Networking Technologies Optical Networking Technologies TMTM

Reconfigurable OADMsReconfigurable OADMs

ReconfigurableOADM (ROADM)ReconfigurableOADM (ROADM)

Slide No. Slide No. 22 Optical Networking Technologies Optical Networking Technologies TMTM

ROADM basic functionsROADM basic functions

ROADM basic functions– Add, Drop, Block or Attenuate any wavelength in any node – controlled by

remote management– Power monitoring and equalization of any wavelength– In Multi-Degree units every port can be configured for single wavelength or any

size band of waves.

The result is:

Fully flexible transport networks

Hitless networks upgrades and changes

Full power monitoring and control

SAVE on spares

SAVE on OPEX

Fast time to market

Slide No. Slide No. 33 Optical Networking Technologies Optical Networking Technologies TMTM

Node 5

Node 1

Node 2

Node 4Node 3

OA OA

Static versus Reconfigurable OADMStatic versus Reconfigurable OADM

Fixed wavelengthsnetwork

Node 5 Node 2

Node 4Node 3

OA OATunablenetwork

Node 1

Node 8

Node 9

Fixed OADM ROADM ROADM AdvantagePredefined number of channels in each node

Any number and type of waves can be selected in any node

Network configuration Highest flexibility. Future upgrades do not disconnect the fiber. OPEX savings.

Non equal channels power levels at node output.

Per channel power level equalization and monitoring

Easy network design. Efficient use of Optical Amplifiers without the need for fixed attenuators

Every node is unique waves configuration

All nodes have the same equipment

Savings on spares. Easy network design.

Upgrades requires additional power compensation

All EDFAs are deployed at the initial stage

In-service network upgrades

Slide No. Slide No. 44 Optical Networking Technologies Optical Networking Technologies TMTM

MRV ROADM ArchitecturesMRV ROADM Architectures

LD1600 double “long” slot size modules. For East-West configuration, 4 “long” slots are allocated for ROADM.

2 degree (East-West only) 40 ports Mux/Demux – availability Q4/2006 – Fixed wavelengths on filter ports (40)

– No multiplex fiber solution for ring-ring interconnect

Multi-Degree (1x9 WSS switch) – availability Q2/2007 – 9 Add/Drop ports

– eliminates add/drop filters

– Fully tunable drop ports (single wavelength or multiplex section)

– Enabler for ring to ring or mesh network designs

Slide No. Slide No. 55 Optical Networking Technologies Optical Networking Technologies TMTM

LD1600-ROADM40 structureLD1600-ROADM40 structure

1. 2 x 1 switch

2. VOA

3. Power Monitor

DROP

1 2 3

Insertion lossesCOM IN-DROP = 11ADD-COM OUT =8COM IN-EXP OUT=2.5EXP IN-COM OUT=12

I=1….40

Slide No. Slide No. 66 Optical Networking Technologies Optical Networking Technologies TMTM

East-West ROADM system configurationEast-West ROADM system configuration

2.5db12db

11db8db

Slide No. Slide No. 77 Optical Networking Technologies Optical Networking Technologies TMTM

Designing with 2-degree ROADMDesigning with 2-degree ROADM

RO

AD

M

•Every node looks the same and acts the same•At each Booster Output ALL channels have the same +2dbm (due to 40 waves) power

RO

AD

M

RO

AD

M

RO

AD

M

All channelsAre attenuatedTo mach PassThroughtraffic

+2dbm -18dbm

20db

+2dbm -13dbm +2dbm

0dbm