12-Channel Dual Fiber CCWDM Mux/Demux Module: DCMD-12-31
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Schematic representation showing exact port count and wavelength configuration. Front panel updates as you configure.
DCMD-12-31-L
12-Channel CCWDM Mux/Demux Overview
The DCMD-12 is a passive 12-channel dual fiber CCWDM mux/demux unit built to the ITU-T G.694.2 channel plan 1391-1611nm (20nm spacing). It combines and separates 12 duplex, protocol-independent data streams over two strands of single-mode fiber with insertion loss below 1.7 dB, and includes an integrated 1310nm monitor port for troubleshooting without service interruption. Available in LGX cassette or 19-inch 1U rackmount housings, both using LC/UPC connectors.
- xWDM Technology: CCWDM
- Number of Data Streams: 12
- Number of Optical Channels: 12
- Insertation Loss (Passband): 1.7 dB
- Protection Class: Indoor
- Operating Temperature: -5 °C - 70 °C
- Connector: LC/UPC
DCMD-12-31 Configurator & Pricing
Configure your product below — the price, SKU and images update with every choice.
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- Housing
- LGX Type (-L)LGX Type (-L)
- Wavelength (CWDM)
- 1391-1611nm (-3961)1391-1611nm (-3961)
- Window Port
- YesYes
- EXP Expansion Port
- NoNo
- Window Port Insertion Loss
- 1.2 dB1.2 dB
- Added Passband Insertion Loss
- +0.3 dB+0.3 dB
12-Channel CCWDM LGX Pricing
SKU:DCMD-12-31-LDCMD-12-31-L
Special Order - Up to 4 WeeksSpecial Order - Up to 4 Weeks12-Channel Dual Fiber CCWDM Mux/Demux Module Specification
Product Type | CCWDM MUX/DEMUX Unit |
Number of Data Streams | 12 |
Number of Optical Channels | 12 |
Operating Wavelengths | CCWDM 1391-1611nm (12 ch) |
Passband | ± 6.5 nm (λ center) |
Channel Spacing | 20 nm |
Insertation Loss (Passband) | 1.7 dB |
Isolation Adjacent Channels | 30 dB |
Isolation Non-Adjacent Channels | 40 dB |
Channel Pass-band Ripple | 0.3 dB |
Insertion Loss Temperature | 0.003 dB/°C |
Wavelength Temperature Shifting | 0.002 nm/°C |
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 |
Protection Class | Indoor |
Operating Temperature | -5 °C - 70 °C |
Storage Temperature | -40 °C - 85 °C |
Compliance | CE, ISO, ITU-T G.694.2, RoHS |
Connector | LC/UPC |
Monitoring Port Type | 1% Monitoring Port |
Insertion Loss (1% Monitor Port) | 23 dB |
Operating Humidity | 5 % - 95 % |
12-Channel Dual Fiber CCWDM Mux/Demux Module Datasheet
v7Complete technical specifications and product details
12-Channel Dual Fiber CCWDM Mux/Demux Module Description
The EdgeOptic DCMD-12 is a passive 12-channel dual fiber CCWDM mux/demux module built to ITU-T G.694.2, covering the 1391 to 1611 nm CCWDM wavelength plan across 12 channels with 20 nm channel spacing and a ±6.5 nm passband. Passband insertion loss is rated at 1.7 dB, with 30 dB isolation between adjacent channels and 40 dB isolation between non-adjacent channels. Each channel terminates on LC/UPC connectors. Every unit includes a fixed 1% monitor port at 23 dB insertion loss on that tap path, plus a built-in 1310nm window alongside the CWDM channels. This configuration does not include an expansion (EXP) port.
The DCMD-12 is a configurable product offered in two housing options selected at the time of order: an LGX Type cassette, the default configuration, or a 19-inch 1U rackmount chassis. Both housings carry the identical 12-channel optical specification described above. The choice affects how the module mounts into existing fiber management infrastructure, not the channel count, wavelength plan, or connector type.
Additional passive performance figures include 0.3 dB channel passband ripple, 0.2 dB polarization dependent loss, 0.1 ps polarization mode dispersion, 50 dB directivity, and 45 dB return loss. Insertion loss drift is rated at 0.003 dB per °C, and wavelength shift at 0.002 nm per °C, with a 500 mW maximum power handling rating. Operating temperature runs -5°C to 70°C, storage -40°C to 85°C, with CE, ISO, RoHS, and ITU-T G.694.2 compliance for indoor deployment.
For configuration guidance or volume pricing, contact our sales team.
Frequently Asked Questions
Is the DCMD-12 a single fiber or dual fiber CWDM module?
The DCMD-12 is a dual fiber CCWDM mux/demux module: each of its 12 channels uses a dedicated fiber pair, with the multiplexed signal carried in one direction per fiber. This is different from a single fiber BiDi CWDM design, where both directions share one strand using distinct wavelengths per direction. EdgeOptic's SCMD product line covers the single fiber BiDi CWDM configuration; the DCMD-12 is the dual fiber counterpart for standard duplex fiber links.
Can I monitor or test a DCMD-12 link without interrupting the active channels?
Yes. The DCMD-12's 1310nm monitor port sits outside the 1391 to 1611 nm CCWDM band used by its 12 data channels, so it can be used to monitor or test the fiber on a separate wavelength without overlapping the multiplexed traffic. This port is a fixed feature on the DCMD-12 configuration, not an optional add or remove item, and the unit does not include a separate expansion (EXP) port.
What is the difference between the DCMD-12 LGX cassette and 19-inch 1U rackmount housing options?
The DCMD-12 is offered in two housings selected at the time of order: an LGX Type cassette, the default configuration, or a 19-inch 1U rackmount chassis. Both housings carry the identical 12-channel dual fiber CCWDM optical specification, including the 1391 to 1611 nm wavelength plan, insertion loss, and LC/UPC connectors. The housing choice determines how the module integrates into existing fiber management or rack infrastructure; confirm the required form factor against site cabinet and fiber management standards before ordering.
Which CWDM transceivers pair with the DCMD-12 channels?
Each of the DCMD-12's 12 channels corresponds to a fixed wavelength within the 1391 to 1611 nm CCWDM plan at 20 nm spacing. The transceiver installed at each end of a channel must be a CWDM optic matched to that channel's center wavelength, since the mux/demux filters route strictly by wavelength and will not pass a mismatched channel correctly. Confirm the wavelength to channel mapping before selecting transceivers for each link.