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MUX/DEMUX OADM
Understanding CWDM Networks
Note: Speci�cations, terms and conditions are subject to change without notice.30162533 000 1008 CWDM.PO.FOP.TM.AE
Fiber Optic Test Solutions WaveReady Network Solutions
Network Element Parameters
Characteristics of CWDM
SMART Optical Handhelds
OADM UnitMUX/DEMUX Unit
OTDRT-BERD/MTS Optical Test Platforms Connector Inspection Scopes
CWDM Testing
Common CWDM Deployment Topologies
Attenuation Profile Optical Spectrum Channel Power Level andWavelength Verification
0.0
0.5
1.0
1.5
2.0
2.5
3.0
1300 1400 1500 1600
O-Band
1260-1360 nm
E-Band
1360-1460 nm
S-Band
1460-1530 nm
C-Band
1530- 1565 nm
L-Band
1565-1625 nm
Water Peak
ITU-T G.652 Fiber
Wavelength (nm)
Fib
er A
tten
uat
ion
(dB
/km
)
1 2 3 4 5 6
7 8
9 10
11 12 13 14 15 16 17
18
Parameters Unit ValuesCenter Wavelength nm ITU-T CWDM Wavelengths0.5 dB Pass Bandwidth nm ≥13Insertion Loss dB ≤3.5Adjacent Chanel Isolation dB ≥40Optical Return Loss dB ≥50PDL dB ≤0.1
1 2
λ1
3
Point to Multi-PointSONET/SDH
λ1
λ2
λ2
λn
λn
Ethernet
Fiber Channel
SONET/SDH
OADM OADM OADM
Ethernet Fiber Channel
λ1
λ2
λn
MU
X/D
EMU
X
MU
X/D
EMU
X2 2 2
Point to PointSONET/SDH
λ1
λ2
λn
Ethernet
Fiber Channel
λ1
λ2
λn
MU
X/D
EMU
X
MU
X/D
EMU
X
1
1
1
1SONET/SDH
SONET/SDH
Ethernet
Fiber Channel
Network Lifecycle Test Parameters Test Instruments Installation/ - Connector inspection and cleaning - Video Microscope and Cleaning Kit Fiber Qualification - Insertion loss at 1310/1550/1625 nm - Loss Test Set/OTDR - ORL measurement - ORL Meter/OTDR - Splice/Connector loss at 1310/1550/1625 nm - OTDR - Length - OTDR - Attenuation profile measurement (verify water peak width, identify fiber type) - Spectral Analyzer (OSA, WDM) (standards, low water peak) System Turn-up and - Connector inspection and cleaning - Video Microscope and Cleaning Kit Wavelength Provisioning - Channel power-level and wavelength verification - Channel Checker/OSA - Wavelength route testing (Loss, ORL) - CWDM OTDR - Transmitter/receiver power-level verification - Power Meter/Channel Checker Maintenance and - Connector inspection and cleaning - Video Microscope and Cleaning Kit Troubleshooting - Channel power-level and wavelength verification - Channel Checker/OSA - Transmitter/receiver power-level verification - Power Meter/Channel Checker - Failure localization per wavelength (loss) - CWDM OTDR - Channel wavelength/power drift testing - Channel Checker/OSA
Ethernet
Fiber Channel
OADM OADM
OADM
OADM
Core DWDMAccess
DataCenter
BusinessArea
Glossary CO Central Office CWDM Coarse Wavelength Division Multiplexing DEMUX Demultiplexer DFB Distributed Feedback DWDM Dense Wavelength Division Multiplexing MUX Multiplexer OADM Optical Add-Drop Multiplexer ORL Optical Return Loss OTDR Optical Time Domain Reflectometer PDL Polarization Dependent Loss
Parameters Unit ValuesCenter Wavelength nm ITU-T CWDM Wavelengths0.5 dB Pass Bandwidth nm ≥13Add/Drop Insertion Loss dB ≤1.5 (1 ch), 3 (4 ch)Pass thru insertion loss dB ≥1 dBOptical Return Loss dB ≥50PDL dB ≤0.1Adjacent Channel Isolation dB ≥40
Nominal central wavelengths (nm) 1 1271 2 1291 3 1311 4 1331 5 1351 6 1371 7 1391 8 1411 9 1431 10 1451 11 1471 12 1491 13 1511 14 1531 15 1551 16 1571 17 1591 18 1611
ITU-T Standards G.694.2: Spectral grids Provides the wavelength grid for for WDM applications; CWDM applications, which supports a CWDM wavelength grid channel spacing of 20 nm. G.695: Optical interfaces Applies to multiplexing applications for for CWDM applications: point-to-point links of up to 16 channels at 2.5 Gb/s. Signal transmission can be either unidirectional or bidirectional.
Key Feature CWDM Standards ITU-T G.694.2 / G.695 Operation Bands O, E, S, C, and L Bands (1271 to 1611 nm) Number of Wavelengths Up to 18 Wavelength Spacing 20 nm Wavelength Drift Tolerance ± 6.5 nm Applications Metro-Access, Regional Network, Private Data Network (up to 80 km)
ITU-T G.694.2 CWDM Grid
™
To learn more, visit www.jdsu.com/fibertest
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