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CWDM 32G/16G/8G/4G
CWDM 32G/16G/8G/4G
C-LIGHT independently develops 32G/16G/8G/4G CWDM SFP+ SFP28 optical modules to support long-distance transmission, covering transmission distances of 10km and 40km. The product supports CDR and has a high temperature 85 °C CWDM series product that can meet a variety of network needs. It is particularly suitable for occasions such as data center storage networks and cloud networks that require high-speed and high-bandwidth transmission. Its communication protocol complies with IEEE 802.3ae, the interface protocol complies with SFF-8431 and SFF-8432, and the packaging protocol complies with SFP+MSA. 32G/16G/8G/4G CWDM optical modules are compatible with switches of more than 100 brands, and are committed to providing original after-sales service to help customers effectively control costs.
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Product Details
Form Factor Part No. Fiber Type Data Rate Wavelength Distance Connector Case Temperature Note
CWDM SFP28 CLSFP32GCWB16-XX SMF 32G 1270~1370nm 16dB LC Com.  
CWDM SFP28 CLSFP32GCWB12-XX SMF 32G 1270~1370nm 12dB LC Com.  
CWDM SFP+ CLSFP16GCWB18-XX SMF 16G 1470~1610nm 18dB LC Com./Ind.  
CWDM SFP+ CLSFP16GCWB16-XX SMF 16G 1270~1610nm 16dB LC Com./Ind.  
CWDM SFP+ CLSFP16GCWB12-XX SMF 16G 1270~1370nm 12dB LC Com./Ind.  
CWDM SFP+ CLSFP8GCWB18-XX SMF 16G 1470~1610nm 18dB LC Com./Ind.  
CWDM SFP+ CLSFP8GCWB16-XX SMF 16G 1270~1610nm 16dB LC Com./Ind.  
CWDM SFP CLSFP4GCWB18-XX SMF 16G 1470~1610nm 18dB LC Com./Ind.  
CWDM SFP CLSFP4GCWB16-XX SMF 16G 1270~1610nm 16dB LC Com./Ind.  

CWDM 32G/16G/8G/4G Optical Transceiver for High-Speed Storage and Cloud Networks

CWDM 32G/16G/8G/4G Optical Transceiver Overview

C-LIGHT CWDM 32G/16G/8G/4G optical transceivers are designed for high-speed fiber connectivity in storage, cloud, and enterprise network environments. The product family combines CWDM wavelength technology with 32G, 16G, 8G, and 4G optical interfaces, providing flexible options for networks operating at different generations of bandwidth.

The series is available in SFP28, SFP+, and SFP form factors and supports long-distance transmission configurations of 10km and 40km. CDR support helps maintain signal integrity during optical transmission, while selected versions support case temperatures up to 85°C for demanding deployment environments.

CWDM 32G/16G/8G/4G Optical Transceiver Key Features

32G to 4G Coverage

The product family supports multiple optical data-rate levels, including 32G, 16G, 8G, and 4G, for different generations of high-speed network equipment.

CWDM Wavelength Operation

Multiple CWDM wavelengths allow optical channels to be transported over shared single-mode fiber infrastructure.

10km and 40km Reach

Transmission configurations are available for both 10km and 40km links, covering common medium- and long-distance network connections.

CDR Support

Clock and Data Recovery technology is supported to help maintain stable high-speed signal transmission and improve link performance.

32G SFP28

The 32G configuration uses the SFP28 form factor and is designed for higher-bandwidth storage and cloud networking applications.

16G and 8G SFP+

SFP+ configurations provide optical connectivity for 16G and 8G network environments with different CWDM wavelength selections.

4G SFP

The 4G configuration provides a compact CWDM optical interface for compatible lower-speed storage and enterprise networking equipment.

85°C High-Temperature Option

Selected CWDM modules support case temperatures up to 85°C, providing additional flexibility for higher-temperature operating environments.

CWDM 32G/16G/8G/4G Optical Transceiver Applications

Storage Area Networks

The 32G, 16G, 8G, and 4G configurations are suitable for storage environments where high-speed optical connectivity is required between servers, switches, and storage systems.

Cloud Networks

CWDM optical modules can support cloud infrastructure that requires scalable bandwidth and efficient use of fiber resources.

Fibre Channel Infrastructure

The multi-rate portfolio provides optical connectivity options for compatible Fibre Channel and storage networking environments.

Enterprise Data Networks

Different rate options allow enterprise networks to connect equipment operating across multiple generations of optical bandwidth.

Data Center Networks

CWDM modules can be deployed in data center environments where multiple optical channels need to share existing single-mode fiber infrastructure.

Storage Network Expansion

The wavelength-based architecture provides a practical approach to expanding optical connectivity while making better use of available fiber.

Inter-Building Fiber Links

The 10km and 40km configurations provide options for optical connections between separate network rooms, buildings, or facilities.

Legacy Network Migration

The availability of 4G, 8G, 16G, and 32G options helps organizations maintain connectivity across different generations of network equipment during upgrades.

Why Choose C-LIGHT CWDM 32G/16G/8G/4G Optical Transceiver?

Multi-Generation Network Support

One product family covers 4G through 32G applications, making it easier to select compatible optical modules for mixed-generation infrastructure.

Storage-Focused Design

The series is particularly suited to storage and cloud networks where high-speed optical connectivity and stable transmission are important.

Flexible Form Factors

SFP28, SFP+, and SFP options allow the optical module to match different generations of compatible network equipment.

Wavelength Selection

Different CWDM wavelength configurations provide flexibility when planning multiple optical channels across shared fiber infrastructure.

CDR-Based Signal Recovery

CDR support helps recover the transmitted clock and data signal, supporting stable optical communication across the specified link distance.

Commercial and Industrial Versions

Commercial and industrial temperature options are available for selected configurations, allowing the modules to address different deployment conditions.

Multi-Vendor Compatibility

C-LIGHT states that its 32G/16G/8G/4G CWDM optical modules are compatible with switches from more than 100 brands.

Quality and Technical Support

C-LIGHT provides 100% module testing, technical guidance, compatibility support, customized services, and long-term maintenance support.

CWDM 32G/16G/8G/4G Optical Transceiver FAQ

Q1. What is a CWDM 32G/16G/8G/4G optical transceiver?

It is a CWDM optical transceiver family designed to support 32G, 16G, 8G, and 4G network applications using wavelength-division multiplexing over single-mode fiber.

Q2. Which data rates are available?

C-LIGHT provides 32G, 16G, 8G, and 4G configurations within this CWDM product family.

Q3. Which form factors are available?

The product family includes SFP28 for 32G, SFP+ for 16G and 8G configurations, and SFP for 4G configurations.

Q4. What transmission distances are supported?

The product family supports 10km and 40km transmission configurations, depending on the selected optical module and link budget.

Q5. Which fiber type does the product use?

The listed CWDM 32G/16G/8G/4G configurations use single-mode fiber for optical transmission.

Q6. What wavelength range is available?

The product specifications include CWDM wavelength configurations covering portions of the 1270nm–1610nm range, depending on the selected data rate and optical module.

Q7. Does the CWDM module support high-temperature operation?

Yes. Selected configurations provide an industrial-temperature option, and C-LIGHT states that its high-temperature CWDM series can support case temperatures up to 85°C.

Q8. Does the product support CDR?

Yes. C-LIGHT specifies CDR support for the CWDM 32G/16G/8G/4G series.

CWDM 32G/16G/8G/4G Optical Transceiver Solution Summary

C-LIGHT CWDM 32G/16G/8G/4G optical transceivers provide a flexible wavelength-division solution for storage, cloud, data center, and enterprise networks. With 32G, 16G, 8G, and 4G configurations, SFP28/SFP+/SFP form factors, 10km and 40km transmission options, CDR support, and selected 85°C high-temperature versions, the product family can support different generations of high-speed optical infrastructure while improving the utilization of existing single-mode fiber resources.

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●100% of products pass initial test, final test and factory inspection.

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Quality certification

Please contact us to download the certification certificate.

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Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.


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