Pon po tm_ae
1
Splitter Port Loss 18 dB 64 128 21 dB 32 15 dB 8 9 dB 4 6 dB 2 3 dB I ns er t i on l os s N umber of por t s Ty pical loss = 10 log (1/nb ports) 6 12 dB Note: Cascaded splitters always induce a higher loss than a single splitter (for the same split ratio) Optical Splitter Input Outputs O 2 O 3 I 1 Understanding Passive Optical Network Testing Construction/Acceptance Testing Fiber under Test Patch Cord Copper Acceptance testing with Loss test set/ORL meter • Connectorized splitter: Link IL and ORL of the feeder part at 1310/1550 nm Link IL and ORL of the distribution part at 1310/1550 nm • Spliced splitter: IL and ORL between OLT and ONT at 1310/1550 nm Loss Test Set/ORL Meter Testing Central Office 1310 nm 1490/1550 nm PON OLT Video AMP RF Video OLT-55/ORL-55 ORL/IL OLT-55/ORL-55 ORL/IL Feeder Fiber Drop Terminals Passive Splitter ONT ONT ONT ONT Distribution Fibers WDM OTDR Testing Acceptance testing with OTDRs • Connectorized splitter: Link/event IL and ORL of the feeder part at 1310/1550 nm Link/event IL and ORL of the distribution part at 1310/1550 nm • Spliced splitter: Link/event IL and ORL between OLT and ONT at 1310/1550 nm Central Office 1310 nm 1490/1550 nm PON OLT Video AMP RF Video T-BERD/MTS-2000 OTDR/FiberComplete T-BERD/MTS-2000 OTDR/FiberComplete T-BERD/MTS-2000 OTDR/FiberComplete Feeder Fiber Drop Terminals Passive Splitter ONT ONT ONT ONT Distribution Fibers WDM PON Fiber Installation and frame connection When laying fiber, test splicing with OTDRs at 1310/1550 nm (a bidirectional OTDR testing is recommended) Fiber Installation Fiber under Test Patch Cord T-BERD/MTS-2000 OTDR/FiberComplete Feeder Fiber Splitter Location Distribution Fibers Drop Terminal Drop Terminal JDSU Solutions Description Construction Turn-up Troubleshooting FI-60 Fiber Identifier FFL-050 and FFL-100 Visual Fault Locator P5000i OTS-55 Optical Talk Set OLT-55 Loss Test Set ORL-55 Return Loss Meter OLP-57 Selective PON Power Meter T-BERD/MTS-2000 and T-BERD/MTS-4000 OTU-8000 WDM Ethernet TDM, WDM, ATM TDM, WDM, Ethernet NG-PON1: G-PON compatible Ethernet ATM, TDM, WDM, Ethernet ATM Traffic Mode 1550 nm 1550 nm Yes, to be defined 1570 nm 1550 nm 1550 nm Video overlay 1575 – 1580 Up: 1260 – 1280 Down: Down: 1575 – 1580 (WDM overlay possible) Up: 1260 – 1280 Down: 1490 Up: 1310 Return Path: 1570 or 1610 To be defined Down : Down : 1400 – 1500 Up: 1260 – 1360 Video overlay 1550 1480 – 1500 (WDM overlay possible) Up: 1260 – 1360 Down: 1480 – 1500 Up: 1260 – 1360 Wavelengths (nm) 64 (128 possible) 64 (128/256 possible) 64 64 (128/256 possible) 32 64 (128 considered) 32 Maximum number of branches 20/24/29 dB 20-30+ dB TBD Like selected PON To be defined 15/20 dB 20/25/28/ 30/32 dB 20/25/ 30 dB IL Maximum 10/20 km 60 km max, 20 km differential 20 km 60 km max, 20 km differential 10/20 km 60 km max, 20 km differential 20 km PON Standards Up: 10 Down: 10 Up: NG-PON1/ XG-PON1: 2.5 NG-PON1/ XG-PON2: 10 NG-PON2: 10 Down: 10 Like selected G/E-PON Like selected G/E-PON Up: 1.25 May fall under NG-PON2 May fall under NG-PON2 Up: 0.155, 0.62, 1.25, 2,48 Down: 1.25 Down: 1.25 – 2.5 Down: 0.155, 0.62, 1.25 Up: 0.155 – 0.62 Next Gen PON 1550 nm Span Bit rates (Gbps) IEEE 802.3av End 2009 ITU-T G.987.x Mid 2010 IPS SP910 To be defined Applicable standard IEEE 802.3ah ITU-T G.983.x ITU-T G.984.x Understanding PON Testing To learn more, visit www.jdsu.com/fttx N o te: Sp eci ficati o n s, ter ms, and conditions are subject to change without notice. © 2012 JDS U n i p h ase C o r p o r ati o n . A l l r i g h ts r eser ved . 30162962 001 0612 PON. PO. FOP. T M . A E Loss Budget Attenua tio n A = αL + α s x + α c y α: attenuation coefficient of the fibre α s : mean splice loss α c : mean loss of line connectors x: number of splices y: number of line connectors L: link length When the network is in service: Downstream transmission from OLT to ONT: - Voice, data & optional IP video at 1490 nm - Optional analog video at 1550 nm Upstream transmission from ONT to OLT: - Voice & data at 1310 nm 0.4 dB 4 0.1 dB Fiber loss 1 dB Connectors 2 0.5 dB Splices 18 dB Splitter (1:64) 1 18 dB T ot a l L os s N umber /L i n k L os s Ty pi ca l P ON l os s bu d get 10 km 1310 nm 0.35 dB/km 3.5 dB 1490 nm 0.22 dB/km 10 km 2.2 dB 10 km 1550 nm 0.2 dB/km 2 dB Total Loss 1310 nm 1490 nm 1550 nm 21.6 dB 22.9 dB 21.4 dB OTDR PON Trace 1 2 3 4 Splitter Splice Connector Launch cable 5 End of fiber 1 2 3 3 4 2 5 OTDR PON trace from the ONT with cascaded splitters PON Power Meter Meter 3 Meter 1 Meter 2 1310 nm 1490 nm 1550 nm OLP-4057 PON Power Meter Central Office PON OLT WDM Video AMP RF Video ONT 1310 nm 1490/1550 nm ONT 1310 nm 1490/1550 nm Passive Splitter Distribution Fibers Broadband Mode • Broadband power meter (780 up to 1650 nm) • Basic power level measurements (when no 1550 nm video overlay is present). Through Mode • FTTH PON power meter for turn-up and maintenance. • Simultaneously measure 1490, 1550 nm (downstream) and 1310 nm (upstream) • In Through mode, insert a PON power meter into a network to measure power levels (for both upstream and downstream). • The PON power meter does not affect the traffic and can be used to troubleshoot at any point in the network. Through mode capability Acronyms and Abbreviations ATM Asynchronous Transfer Mode B-PON Broadband Passive Optical Network CO Central Office DSLAM Digital Subscriber Line Access Multiplexer E-PON Ethernet Passive Optical Network G-PON Gigabit Passive Optical Network IL Insertion Loss NOC Network Operation Center OLT Optical Line Terminal ONT Optical Network Terminal ONU Optical Network Unit ORL Optical Return Loss OTDR Optical Time Domain Reflectometer PON Passive Optical Network RFoG Radio Frequency Over Glass TDM Time Division Multplexing WDM Wavelength Division Multiplexing The ORL-55 Optical Return Loss Meter combines three functions in one field-optimized instrument, including an optical return loss meter, an optical power meter, and a triple- wavelength laser source. The OTU-8000 lies at the core of JDSU optical network management system (ONMSi) combining an in-service OTDR and an optical switch to monitor hundreds of fiber links. Turn-up and Troubleshooting Testing Fiber under Test Patch Cord Copper Equipment Turn-up and Troubleshooting Network Troubleshooting PON Equipment Turn-Up and Troubleshooting Before activating the network or when connecting an ONT: • Measure optical power at the OLT (1490/1550 nm) to ensure delivery of sufficient power to the ONTs • Measure optical power at each splitter output • Measure optical power at the ONT (1310/1490/1550 nm) • Use PON selective power meter to troubleshoot at any point in the network Central Office 1310 nm 1490/1550 nm PON OLT Video AMP RF Video T-BERD/MTS-4000 OTDR/PON Power Meter T-BERD/MTS-4000 OTDR/PON Power Meter T-BERD/MTS-4000 OTDR/PON Power Meter Feeder Fiber Drop Terminals Passive Splitter ONT ONT ONT ONT Distribution Fibers WDM PON Network Troubleshooting • Measure power levels with the ONT PON power meter • Conduct an OTDR test from the ONT or drop terminal (when some ONTs respond) -> In-service OTDR (1625 or 1650 nm) • Conduct an OTDR test from the splitter or OLT (when no ONTs respond) Central Office 1310 nm 1490/1550 nm PON OLT Video AMP RF Video T-BERD/MTS-2000 OTDR T-BERD/MTS-2000 OTDR Feeder Fiber Drop Terminal Passive Splitter ONT ONT ONT ONT Distribution Fibers WDM Drop Terminal PON Test System 1xn 1xn 1310 nm 1490 nm Central Office Serving up to 10,000 customers Switch In-Service OTDR 1650 nm OLT OLT WDM WDM ONT ONT x ONT n ONT 1 The peak of ONT 1 is missing 10 GE-PON 10 G-PON R F oG ov er P O N Pure WDM E -P O N G -P O N B -P O N We wrote the books on Fiber Optic Testing. Visit us online for your free copies. Fiber Optic Testing Volume 2 The FI-60 identifies optical signals on fiber without opening it at the splice point. It also can detect continuous wave, live optical transmission, and 270 Hz, 1 kHz, and 2 kHz modulated tones. A visual fault locator is essential for quickly and easily locating the exact area where problems exist in fiber cables so technicians can trouble- shoot, diagnose, and fix them efficiently. The P5000i digital analysis microscope makes it quick and easy to certify that every connection in your network is clean and optimized. Inspect, save pictures, and perform pass/fail analyses using JDSU T-BERD/MTS platforms. The OTS-55 transmits digital voice clearly over a single fiber. Technicians can conveniently use a headset or “speakerphone” mode to communicate hands-free. The OLT-55 measures optical power and IL. It is used for installation, maintenance, and troubleshooting of single mode fiber. It also can be used as a standalone power meter or laser source. The OLP-57 Selective PON Power Meter tests FTTX/PON systems. Its through mode can simultaneously measure all three fiber wavelengths 1490 nm and 1550 nm downstream and 1310 nm upstream The T-BERD/MTS-2000 and T-BERD/MTS-4000 are modular platforms. The OTDR module measures attenuation along the fiber, detect events, and measures ORL and IL. The selective PON power meter measures power level in pass-through mode OTDRs can automatically monitor PON networks while in service. At each acquisition, it checks the peak level that the reflective termination generates. The peak will disappear if the fiber is cut or the level will decrease during attenuation. This system checks for fiber continuity from the CO to the customer and is the only way to know whether problems stem from the physical infrastructure (fiber, splitter, connector) or the equipment (OLT, ONU, ONT).
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Transcript of Pon po tm_ae
Splitter Port Loss
1 8 d B 6 4
1 2 8 2 1 d B
3 2 1 5 d B
8 9 d B
4 6 d B
2 3 d B
I n s e r t i o n l o s s N u m b e r o f p o r t s
T y p i c a l loss = 10 log (1/nb ports)
6 1 2 d B
Note: Cascaded splitters always induce a higher loss than a single splitter (for the same split ratio)
O p t i c a l S p l i t t e r
I n p u t
O u t p u t s
O 2
O 3
I 1
Understanding Passive Optical Network Testing
Construction/Acceptance Testing Fiber under Test
Patch Cord
Copper
Acceptance testing with Loss test set/ORL meter• Connectorized splitter: Link IL and ORL of the feeder part at 1310/1550 nm Link IL and ORL of the distribution part at 1310/1550 nm• Spliced splitter: IL and ORL between OLT and ONT at 1310/1550 nm
Loss Test Set/ORL Meter Testing
C e n t r a l O �c e
1310 nm
1490/ 1550 nm
PON OLT
Video AMP
RF Video
OLT-55/ORL-55 ORL/IL
OLT-55/ORL-55 ORL/IL
Feeder Fiber
Drop Terminals
Passive Splitter
ONT
ONT
ONT
ONT
Distribution Fibers WDM
OTDR Testing
Acceptance testing with OTDRs• Connectorized splitter: Link/event IL and ORL of the feeder part at 1310/1550 nm Link/event IL and ORL of the distribution part at 1310/1550 nm • Spliced splitter: Link/event IL and ORL between OLT and ONT at 1310/1550 nm
C e n t r a l O �c e
1310 nm
1490/ 1550 nm
PON OLT
Video AMP
RF Video
T-BERD/MTS-2000OTDR/FiberComplete
T-BERD/MTS-2000OTDR/FiberComplete
T-BERD/MTS-2000OTDR/FiberComplete
Feeder Fiber
Drop Terminals
Passive Splitter
ONT
ONT
ONT
ONT
Distribution Fibers WDM
PON Fiber Installation and frame connectionWhen laying fiber, test splicing with OTDRs at 1310/1550 nm(a bidirectional OTDR testing is recommended)
Fiber Installation
Fiber under Test
Patch Cord
T-BERD/MTS-2000OTDR/FiberComplete
Feeder Fiber
Splitter Location
Distribution Fibers
Drop Terminal
Drop Terminal
JDSU Solutions
Description
Construction
Turn-up
Troubleshooting
FI-60 FiberIdentifier
FFL-050 and FFL-100 Visual Fault Locator
P5000i OTS-55 Optical Talk Set
OLT-55 Loss Test Set
ORL-55 Return Loss Meter
OLP-57 Selective PON Power Meter
T-BERD/MTS-2000 andT-BERD/MTS-4000
OTU-8000
WDMEthernet TDM, WDM, ATM
TDM, WDM, EthernetNG-PON1:
G-PON compatible
EthernetATM, TDM, WDM, Ethernet
ATMTra�c Mode
1550 nm1550 nm Yes, to be defined1570 nm1550 nm1550 nmVideo overlay
1575 – 1580Up: 1260 – 1280
Down: Down: 1575 – 1580(WDM overlay
possible)Up: 1260 – 1280
Down: 1490Up: 1310
Return Path: 1570 or 1610
To be defined Down : Down : 1400 – 1500
Up: 1260 – 1360Video overlay
1550
1480 – 1500(WDM overlay
possible) Up: 1260 – 1360
Down: 1480 – 1500Up: 1260 – 1360
Wavelengths (nm)
64(128 possible)
64 (128/256 possible)
64 64 (128/256 possible)
3264 (128 considered)
32Maximumnumber of branches
20/24/29 dB20-30+ dB TBD Like selected PON To be defined15/20 dB20/25/28/30/32 dB
20/25/30 dB IL
Maximum
10/20 km60 km max, 20 kmdi�erential
20 km 60 km max, 20 km di�erential
10/20 km60 km max, 20 km di�erential
20 km
PON Standards
Up: 10
Down: 10
Up: NG-PON1/XG-PON1: 2.5
NG-PON1/XG-PON2: 10NG-PON2: 10
Down: 10
Like selected G/E-PON
Like selected G/E-PON
Up: 1.25
May fall underNG-PON2
May fall under NG-PON2
Up: 0.155, 0.62, 1.25, 2,48
Down: 1.25 Down: 1.25 – 2.5Down: 0.155, 0.62, 1.25
Up: 0.155 – 0.62
Next Gen PON
1550 nm
Span
Bit rates (Gbps)
IEEE 802.3avEnd 2009
ITU-T G.987.xMid 2010
IPS SP910 To be defined Applicable standard
IEEE 802.3ahITU-T G.983.x ITU-T G.984.x
Understanding PON Testing
To learn more, visit www.jdsu.com/fttxN o t e : S p e c i fi c a t i o n s , t e r m s, and conditions are subject to change without notice.© 2 0 12 J D S U n i p h a s e C o r p o r a t i o n . A l l r i g h t s r e s e r v e d . 30162962 001 0612 PON . P O . FOP . T M . A E
Loss Budget
A t t e n u a t i o n A = αL + αs x + αc y
α: a t t e n u a t i o n c o e �c i e n t o f t h e fi b r e αs : m e a n s p l i c e l o s s αc : m e a n l o s s o f l i n e c o n n e c t o r s x: n u m b e r o f s p l i c e s y: n u m b e r o f l i n e c o n n e c t o r s L: li n k l e n g t h
When the network is in service: Downstream transmission from OLT to ONT: - Voice, data & optional IP video at 1490 nm - Optional analog video at 1550 nm
Upstream transmission from ONT to OLT: - Voice & data at 1310 nm
0 .4 d B 4 0 . 1 dB
F i b e r l o s s
1 d B C o n n e c t o r s 2 0 . 5 d B
S p l i c es
1 8 d B S p l i t t e r ( 1 : 6 4 ) 1 1 8 d B
T o t a l L o s s N u m b e r / L i n k L o s s
T y p i c a l P O N l o s s b u d g e t
1 0 k m 1 3 1 0 n m 0 .3 5 d B / k m 3.5 dB
1 4 9 0 n m 0 . 22 d B / k m 1 0 k m 2.2 dB
1 0 k m 1 5 5 0 n m 0 .2 d B / k m 2 dB
T o t a l L o s s
1 3 1 0 n m 1490 n m 1 55 0 n m
21.6 dB 2 2. 9 d B 21.4 dB
OTDR PON Trace
1
2
3
4
S p l i t t e r
S p l i c e
C o n n e c t o r
L a u n c h cable
5 E n d o f fiber
1 2
3
3
4
2
5
O T D R P O N t r a c e from the ONT with cascaded splitters
PON Power Meter
Meter 3
Meter 1
Meter 2
1310 nm 1490 nm 1550 nm
OLP-4057 PON Power Meter
C e n t r a l O �c e PON OLT WDM
Video AMP
RF Video
ONT
1310 nm
1490/ 1550 nm
ONT
1310 nm
1490/ 1550 nm
Passive Splitter
Distribution Fibers
Broadband Mode • Broadband power meter (780 up to 1650 nm) • Basic power level measurements (when no 1550 nm video overlay is present).
Through Mode • FTTH PON power meter for turn-up and maintenance. • Simultaneously measure 1490, 1550 nm (downstream) and 1310 nm (upstream) • In Through mode, insert a PON power meter into a network to measure power levels (for both upstream and downstream). • The PON power meter does not a�ect the tra�c and can be used to troubleshoot at any point in the network.
T h r o u g h m o d e c a p a b i l i t y
Acronyms and Abbreviations
ATM Asynchronous Transfer Mode B-PON Broadband Passive Optical Network CO Central O�ceDSLAM Digital Subscriber Line Access Multiplexer E-PON Ethernet Passive Optical Network G-PON Gigabit Passive Optical Network IL Insertion Loss NOC Network Operation Center OLT Optical Line Terminal ONT Optical Network Terminal ONU Optical Network Unit ORL Optical Return Loss OTDR Optical Time Domain Reflectometer PON Passive Optical Network RFoG Radio Frequency Over Glass TDM Time Division Multplexing WDM Wavelength Division Multiplexing
The ORL-55 Optical Return Loss Meter combines three functions in one field-optimized instrument, including an optical return loss meter, an optical power meter, and a triple- wavelength laser source.
The OTU-8000 lies at the core of JDSU optical network management system (ONMSi) combining an in-service OTDR and an optical switch to monitor hundreds of fiber links.
Turn-up and Troubleshooting Testing Fiber under Test
Patch Cord
Copper
Equipment Turn-up and Troubleshooting Network Troubleshooting
PON Equipment Turn-Up and Troubleshooting Before activating the network or when connecting an ONT: • Measure optical power at the OLT (1490/1550 nm) to ensure delivery of su�cient power to the ONTs• Measure optical power at each splitter output• Measure optical power at the ONT (1310/1490/1550 nm)• Use PON selective power meter to troubleshoot at any point in the network
C e n t r a l O �c e
1310 nm
1490/ 1550 nm
PON OLT
Video AMP
RF Video
T-BERD/MTS-4000 OTDR/PON Power Meter
T-BERD/MTS-4000 OTDR/PON Power Meter
T-BERD/MTS-4000 OTDR/PON Power Meter
Feeder Fiber
Drop Terminals
Passive Splitter
ONT
ONT
ONT
ONT
Distribution Fibers WDM
PON Network Troubleshooting • Measure power levels with the ONT PON power meter• Conduct an OTDR test from the ONT or drop terminal (when some ONTs respond) -> In-service OTDR (1625 or 1650 nm) • Conduct an OTDR test from the splitter or OLT (when no ONTs respond)
C e n t r a l O �c e
1310 nm
1490/ 1550 nm
PON OLT
Video AMP
RF Video
T-BERD/MTS-2000OTDR
T-BERD/MTS-2000OTDR
Feeder Fiber
Drop Terminal
Passive Splitter
ONT
ONT
ONT
ONT
Distribution Fibers WDM
Drop Terminal
PON Test System
1xn
1xn
1310 nm
1490 nm
Central O�ceServing up to 10,000 customers
Switch
In-Service OTDR 1650 nm
OLT
OLT
WDM
WDM
ONT
ONT
x
ONT n
ONT 1
The peak of ONT 1 is missing
10 GE-PON10 G-PON R F o G o v e r P O N Pure WDME -P O N G -P O N B -P O N
We wrote the bookson Fiber Optic Testing.Visit us online for your free copies.
Fiber Optic Testing
Volume 2
The FI-60 identi�es optical signals on �ber without opening it at the splice point. It also can detect continuous wave, live optical transmission, and 270 Hz, 1 kHz, and 2 kHz modulated tones.
A visual fault locator is essential for quickly and easily locating the exact area where problems exist in �ber cables so technicians can trouble-shoot, diagnose, and �x them e�ciently.
The P5000i digital analysis microscope makes it quick and easy to certify that every connection in your network is clean and optimized. Inspect, save pictures, and perform pass/fail analyses using JDSU T-BERD/MTS platforms.
The OTS-55 transmits digital voice clearly over a single �ber. Technicians can conveniently use a headset or “speakerphone” mode to communicate hands-free.
The OLT-55 measures optical power and IL. It is used for installation, maintenance, and troubleshooting of single mode �ber. It also can be used as a standalone power meter or laser source.
The OLP-57 Selective PON Power Meter tests FTTX/PON systems. Its through mode can simultaneously measure all three �ber wavelengths 1490 nm and 1550 nm downstream and 1310 nm upstream
The T-BERD/MTS-2000 and T-BERD/MTS-4000 are modular platforms. The OTDR module measures attenuation along the �ber, detect events, and measures ORL and IL. The selective PON power meter measures power level in pass-through mode
OTDRs can automatically monitor PON networks while in service. At each acquisition, it checks the peak level that the re�ective termination generates. The peak will disappear if the �ber is cut or the level will decrease during attenuation. This system checks for �ber continuity from the CO to the customer and is the only way to know whether problems stem from the physical infrastructure (�ber, splitter, connector) or the equipment (OLT, ONU, ONT).
