Where to buy upgraded CWDM modules

Upgraded CWDM modules can be purchased from specialized networking vendors such as FS Europe, Cisco, MikroTik, Fiberonsale, and Omnitron Systems, offering a range of SFP/SFP+/QSFP compatible modules, MUX/DEMUX units, and Optical Add-Drop Multiplexers.

Recommended Vendors

FS Europe offers a wide selection of CWDM and DWDM transceiver modules, including SFP, SFP+, and XFP types, supporting wavelengths from 1270–1610nm and distances up to 120 km. They provide customized services and online ordering for WDM applications . Cisco provides CWDM solutions including GBICs, SFPs, OADMs, and multiplexers. Their modules support scalable Gigabit Ethernet and Fibre Channel services, suitable for campus, data center, and metropolitan networks. Cisco CWDM modules are designed for high availability and flexible multiservice networks . Fiberonsale specializes in CWDM MUX/DEMUX modules, offering 2, 4, 5, 8, 9, 16, and 18-channel configurations. They provide various packaging options (ABS plastic, 19" rack mount, LGX metal box) and support multiple connector types (FC, ST, SC, LC), with worldwide delivery . MikroTik sells upgraded CWDM MUX/DEMUX units like the CWDM-MUX8A, which combine up to eight fiber links into one. The upgraded revision includes an EXP/1310 port compatible with 1310nm SFP/SFP+/SFP28/QSFP/QSFP28 modules up to 100 Gbps, allowing simultaneous use of 1.25Gbps and 10Gbps modules . Omnitron Systems offers iConverter CWDM multiplexers and OADMs, supporting up to sixteen channels of Ethernet, TDM, SONET, and other services. Their modules are compatible with iConverter media converters and fiber transponders, and they provide compact 19-module or single-slot passive chassis for flexible deployment and upgrades .

Key Considerations

• Compatibility: Ensure the CWDM modules match your existing SFP/SFP+/QSFP ports and fiber infrastructure.
• Channel Capacity: Choose modules based on the number of wavelengths required (2–18 channels for MUX/DEMUX).
• Distance and Speed: Verify supported link distances and data rates (1.25Gbps, 10Gbps, up to 100Gbps).
• Form Factor: Consider rack-mountable or standalone chassis depending on deployment needs.
• Vendor Support: Look for vendors offering technical support, warranty, and worldwide shipping if needed. By selecting from these vendors, you can acquire upgraded CWDM modules that enhance fiber capacity, support multiple channels, and integrate with existing network equipment efficiently.