1. What is an Industrial-Grade CWDM + MUX Single-Fiber Application Solution?
With the rapid development of industrial IoT, smart cities, railway transportation, and carrier metro networks, bandwidth demand continues to grow. However, fiber resources in access networks are often limited. Re-deploying fiber cables usually involves high construction costs, long deployment cycles, complex field environments, and service interruption risks. Therefore, maximizing network capacity over existing fiber resources has become a key concern.
CWDM (Coarse Wavelength Division Multiplexing) is an ideal solution to address this challenge.
2. What Are Industrial-Grade CWDM Optical Modules and MUX?
CWDM (Coarse Wavelength Division Multiplexing) is a technology that multiplexes multiple optical signals of different wavelengths onto a single fiber for transmission, enabling “one fiber, multiple services.”
The C-LIGHT industrial-grade CWDM MUX aggregates multiple CWDM wavelengths onto a single fiber, and the DEMUX at the remote end separates them back into individual wavelengths.
C-LIGHT Industrial CWDM MUX Key Specifications
| Parameter | Specification |
|---|---|
| Product Type | CWDM MUX/DEMUX |
| Number of Channels | 18 channels |
| Wavelength Range | 1270nm–1610nm |
| Fiber Type | SMF-28e |
| Single-Fiber Support | Yes |
| Insertion Loss | < 3.0 dB |
| Adjacent Channel Isolation | ≥ 30 dB |
| Non-Adjacent Channel Isolation | ≥ 40 dB |
| Return Loss | ≥ 50 dB |
| Directivity | ≥ 55 dB |
| Polarization Dependent Loss | ≤ 0.1 dB |
| Max Optical Power | 500 mW |
| Operating Temperature | -10°C ~ +70°C |
| Storage Temperature | -40°C ~ +85°C |
The C-LIGHT industrial 2.5G/11.3G multi-rate optical module supports multiple operating rates, and works with the DEMUX at the remote end to separate both wavelength and data.
C-LIGHT 2.5G/11.3G Multi-Rate CWDM Optical Module Key Specifications
| Product Type | CWDM SFP+ Multi-Rate 11.3G/10.3G/2.5G/1.25G/100Mbps |
|---|---|
| Wavelength Range | 18 channels, 1270nm–1610nm |
| Center Wavelength | Center Channel ±6.5nm |
| Transmit Power | 2 ~ 6 dBm |
| Receiver Sensitivity | -22 dBm @ 11.3G/10.3G; -24 dBm @ 2.5G/1.25G/100Mbps |
| Spectral Width | ≤ 1 nm |
| SMSR | ≥ 35 dB |
| Extinction Ratio | ≥ 4.5 dB |
| Optical Rise/Fall Time | ≤ 2 ns |
| Eye Margin | ≥ 20% |
| Receiver Overload | ≥ -7 dBm |
| LOS De-Assert | ≥ -25 dBm |
| LOS Assert | ≤ -30 dBm |
| Operating Temperature | -40°C ~ +85°C |
3. A Complete CWDM Solution Is More Than Just a MUX
CWDM optical modules
CWDM MUX/DEMUX
Single-mode fiber link
4. Using C-LIGHT 2.5G CWDM SFP for Access Network Expansion
2.5Gbps transmission rate
Full CWDM wavelength coverage (1270nm–1610nm)
Single-mode fiber transmission
DDM digital diagnostics
Industrial-grade temperature support
Long-distance transmission capability
5. Building High-Speed Backbone Networks with C-LIGHT 11.3G CWDM SFP+
10.3125Gbps transmission rate
CWDM wavelength 1270nm–1610nm
DDM digital diagnostics
Low power consumption
Carrier-grade reliability
6. Advantages of Industrial CWDM Solution
Maximum fiber utilization
Flexible network evolution
Cost reduction
Industrial reliability
7. Typical Industry Applications
Smart Grid
Rail Transit
Industrial Parks
Carrier Metro Networks
8. Why Choose C-LIGHT CWDM Solution?
Industrial-grade CWDM MUX
2.5G CWDM SFP
11.3G CWDM SFP+
Full wavelength compatibility
One-stop solution
9. Frequently Asked Questions (FAQ)
Q1: How many wavelengths does the C-LIGHT industrial CWDM MUX support?
A1: It supports 18 CWDM wavelengths covering the full 1270nm–1610nm band.
Q2: Must CWDM MUX be used with CWDM optical modules?
A2: Yes. A CWDM system includes optical modules, MUX/DEMUX, and single-mode fiber.
Q3: What are the requirements for optical modules?
A3: Standard dual-fiber CWDM colored modules are required.
Q4: How do you match CWDM modules?
A4: Matching is based on TX wavelength pairing.
Q5: Does MUX/DEMUX require specific data rates?
A5: No, it is transparent to protocol and rate.
Q6: Can CWDM MUX work with OADM?
A6: Yes, MUX at endpoints, OADM at intermediate nodes.
Q7: Can single-fiber and dual-fiber systems mix?
A7: Generally no due to different wavelength design.
Q8: Can dual-fiber MUX be used as single-fiber?
A8: Technically possible but not recommended.
Q9: Difference between industrial and commercial MUX?
A9: Industrial supports wider temperature and higher reliability.
Q10: What data rates are supported?
A10: 1.25G, 2.5G, 11.3G, 25G depending on design.
Q11: Can 2.5G and 11.3G be mixed?
A11: Yes, CWDM is wavelength-based not rate-based.
Q12: Can CWDM MUX be customized?
A12: Yes, wavelength, channel count, connectors, and packaging.
