8-Channel Passive CWDM Mux Demux, 1470–1610nm, Dual Fiber, LC/UPC
Passive 8-channel dual-fiber CWDM mux/demux for 1470–1610nm channels at 20nm spacing with LC/UPC interfaces.
8 CWDM channels · 1470–1610nm · Dual fiber · LC/UPC
A passive coarse wavelength-division multiplexing (CWDM) device for combining eight services onto a dual-fiber optical path. The image represents the product type; housing, port layout and optional monitor, expansion or 1310nm ports are confirmed in the quotation.
Deployment fit
Use it for
Point-to-point fiber-capacity expansion where eight CWDM channels share a dual-fiber route.
Channel plan
1470, 1490, 1510, 1530, 1550, 1570, 1590 and 1610nm at 20nm spacing.
Confirm first
Both-end channel mapping, mux/demux direction, common ports, connector polish, route loss, housing and optional ports.
Technical specifications
| Product type | Passive 8-channel CWDM mux/demux |
|---|---|
| Fiber topology | Dual fiber |
| Channel wavelengths | 1470 / 1490 / 1510 / 1530 / 1550 / 1570 / 1590 / 1610nm |
| Channel spacing | 20nm |
| Channel passband | ±6.5nm |
| Connector | LC/UPC |
| 8-channel insertion loss | ≤2.5dB with connectors, family specification |
| Channel ripple | ≤0.3dB |
| Adjacent isolation | >30dB |
| Non-adjacent isolation | >40dB |
| Polarization-dependent loss | <0.1dB |
| Polarization-mode dispersion | <0.1ps |
| Return loss / directivity | >50dB / >50dB |
| Maximum optical power | 500mW |
| Housing and optional ports | Confirmed in the approved quotation |
Representative type image. Final housing, port labels and optional monitor, expansion or 1310nm ports follow the approved quotation.
Pre-order engineering checks
- Map every CWDM transceiver wavelength to the same labeled channel at the local and remote devices.
- Confirm mux/demux direction, line/common ports, fiber polarity and whether monitor, expansion or 1310nm ports are needed.
- Include both passive devices, fiber attenuation, connectors, splices and engineering margin in the end-to-end optical budget.
- Confirm LC/UPC polish, rack or module housing, pigtail arrangement, port labels and quantity before production.
Compatibility and validation
A passive mux/demux does not provide host coding compatibility. Deployment fit depends on the wavelength plan, optical passband, connector polish, topology and total optical loss. Every connected transceiver still needs separate host and optical verification.
Frequently asked questions
Which transceiver wavelengths match this 8-channel CWDM unit?
Use CWDM transceivers centered at 1470, 1490, 1510, 1530, 1550, 1570, 1590 and 1610nm. Map each service to the same labeled channel at both ends.
Do I need one unit or a pair?
A normal dual-fiber point-to-point CWDM link uses a mux/demux at each end. Confirm the common-port direction, channel mapping and fiber polarity for the complete pair.
How much mux/demux loss should be included in the link budget?
The approved family specification lists up to 2.5dB insertion loss with connectors for an 8-channel device. Budget both end devices, fiber, connectors, splices and an engineering margin.
Are monitor, expansion and 1310nm ports included?
Not automatically. Those ports change the optical path and port layout. State each required optional port in the quotation and include its loss in the final optical budget.
Can different data rates share the same CWDM system?
The passive device routes optical wavelengths, but each service still needs a matching transceiver pair and an adequate loss budget. Confirm the exact protocol, rate and optics for every channel.
What is the difference between dual-fiber CWDM and single-fiber CWDM?
This page covers dual-fiber topology, with separate transmit and receive fibers on the line side. Single-fiber systems require a different port and wavelength-pair plan and should be quoted separately.
Why can a channel stay down even when the transceivers are recognized?
Check channel labels at both ends, common-port direction, fiber polarity, connector polish, route loss and received power. Host recognition alone does not prove that the optical wavelength path is correct.
What information is needed before ordering?
Send the channel list, both-end transceiver models, dual-fiber route, connector polish, measured loss, housing, monitor/expansion/1310nm-port requirements, rack layout, quantity and required date.
Lock the CWDM channel plan before quotation
Send both-end channel mapping, transceiver models, route length and measured loss, connector polish, common-port direction, housing, optional ports, quantity and required date.
Request a configuration reviewFinal specifications follow the approved quotation and product datasheet.