9 Data Channels Single Fiber Passive CWDM Mux/Demux: SCMD-9B
SCMD-9B: Side B Single-Fiber CWDM Mux/Demux for Far-End Pairing
The SCMD-9B is the Side B unit of EDGE's 9-channel single-fiber CWDM multiplexer/demultiplexer pair, built as an LGX cassette with 9 data streams routed over 18 optical channels through LC/UPC connectors. It carries the far-end (B side) half of each CWDM channel pair used in this single-fiber system: 1291, 1331, 1371, 1411, 1451, 1491, 1531, 1571 and 1611 nm. SCMD-9B is designed to pair with the SCMD-9A unit at the opposite end of the link, so each of the 9 wavelength pairs carries bidirectional traffic over a single strand of fiber. Deploy it where fiber count is constrained and 9 duplex data streams need to run on one fiber strand, using CWDM-tuned optics matched to each channel's B side wavelength.
- xWDM Technology: BiDi CWDM
- Package Type: LGX Cassette
- Number of Data Streams: 9
- Number of Optical Channels: 18
- Connector: LC/UPC
- Filter Technology: CCWDM (Compact CWDM – Free Space Technology)
- Insertation Loss (Passband): 1.9 dB
- Operating Temperature: 0 °C - 70 °C
- MTBF: 1000000 hours
SCMD-9B Mux/Demux Pricing
SKU:SCMD-9B
In Stock - Ships Next Business Day9 Data Channels Single Fiber Passive CWDM Mux/Demux Specification
Product Type | BiDi CWDM MUX/DEMUX Unit |
Package Type | LGX Cassette |
Number of Data Streams | 9 |
Number of Optical Channels | 18 |
Connector | LC/UPC |
Operating Wavelengths | 9 CWDM Channel pairs 1271-1611nm |
Channel Spacing | 20 nm |
Passband | ± 6.5 nm (λ center) |
Filter Technology | CCWDM (Compact CWDM – Free Space Technology) |
Insertation Loss (Passband) | 1.9 dB |
Insertion Loss (1% Monitor Port) | 23 dB |
Monitoring Port Type | 1% Monitoring Port |
Isolation Adjacent Channels | 30 dB |
Isolation Non-Adjacent Channels | 40 dB |
Channel Pass-band Ripple | 0.3 dB |
Polarization Dependent Loss (PDL) | 0.2 dB |
Polarization Mode Dispersion (PMD) | 0.1 ps |
Directivity | 50 dB |
Return Loss | 45 dB |
Maximum Power Handling | 500 mW |
Operating Temperature | 0 °C - 70 °C |
Operating Humidity | 5 % - 95 % |
Storage Temperature | -40 °C - 85 °C |
MTBF | 1000000 hours |
Compliance | CE, ISO, ITU-T G.694.2, RoHS |
9 Data Channels Single Fiber Passive CWDM Mux/Demux Datasheet
v7Complete technical specifications and product details
9 Data Channels Single Fiber Passive CWDM Mux/Demux Description
The SCMD-9B is the Side B unit of EDGE's 9-channel single-fiber CWDM multiplexer/demultiplexer pair, built in an LGX cassette with LC/UPC connectors. It carries nine Side B channels of the system's 18 optical channels, so 9 duplex signals share one fiber strand. As a passive device, it needs no power and works alongside CWDM-tuned transceivers.
Per-channel insertion loss through the passband is 1.9 dB, with 30 dB adjacent-channel isolation and 40 dB non-adjacent isolation. The unit includes a 1% monitoring port at 23 dB insertion loss for in-service power checks. It operates from 0 to 70 degrees C and 5 to 95% humidity, rated for CE, ISO, ITU-T G.694.2 and RoHS compliance.
SCMD-9B carries the B side of each of the 9 CWDM channel pairs: 1291, 1331, 1371, 1411, 1451, 1491, 1531, 1571 and 1611 nm. Each pairs with the corresponding A side wavelength carried by the companion SCMD-9A unit, so a matched SCMD-9A / SCMD-9B pair carries all 9 duplex channels over one fiber strand between two locations.
Use SCMD-9B where a single fiber strand needs to carry 9 duplex data streams between two sites, such as consolidating multiple point-to-point Ethernet or storage links onto shared dark fiber. Match each channel's transceiver wavelength to this unit's B side plan and verify the exact center wavelength against the transceiver's own datasheet before ordering.
SCMD-9B ships from stock and carries EDGE's standard 5-year product warranty. For project quantities, custom channel plans, or questions on matching CWDM transceivers to this Side B channel set, contact our sales team.
Frequently Asked Questions
Do I need both SCMD-9A and SCMD-9B to build a working link?
Yes. SCMD-9A carries the A side of each CWDM channel pair (1271, 1311, 1351, 1391, 1431, 1471, 1511, 1551 and 1591 nm) and SCMD-9B carries the B side (1291, 1331, 1371, 1411, 1451, 1491, 1531, 1571 and 1611 nm). A single-fiber CWDM link needs one unit of each type, one at each end, so every channel pair sends and receives on its two paired wavelengths over the same fiber strand.
What is the difference between the SCMD-9A and SCMD-9B units?
The two units are the same physical device: an LGX cassette with 9 data streams over 18 optical channels, LC/UPC connectors, and identical insertion loss, isolation and environmental ratings. The difference is which side of each CWDM channel pair each unit carries. SCMD-9A carries 1271, 1311, 1351, 1391, 1431, 1471, 1511, 1551 and 1591 nm; SCMD-9B carries 1291, 1331, 1371, 1411, 1451, 1491, 1531, 1571 and 1611 nm. They install as a matched pair, one on each end of the fiber run.
Which transceivers pair with SCMD-9B?
SCMD-9B requires CWDM-tuned transceivers whose transmit wavelength matches this unit's B side channel plan (1291, 1331, 1371, 1411, 1451, 1491, 1531, 1571 or 1611 nm), one channel per data stream. Verify the exact center wavelength and channel assignment against the transceiver's own datasheet before ordering, since CWDM transceiver wavelength grids and labeling vary by manufacturer.
How do I use the SCMD-9B's 1% monitor port to check optical power?
SCMD-9B includes a 1% monitoring port with 23 dB insertion loss, used to tap a small fraction of the optical signal for in-service power measurement. This lets a technician check optical power without breaking the main signal path.