Introduction of CWDM (Coarse Wavelength Division Multiplexing)

With the development of optical communication, optical communication components are also growing rapidly. As one of the components of optical communication, the optical transceiver module plays the role of photoelectric conversion. There are many types of optical modules. Common ones are QSFP28 optical transceiver modules, SFP transceive optical modules, QSFP + optical transceive modules, CXP optical modules, CWDM optical modules, DWDM optical modules, and so on. Each optical transceive module has different application scenarios and functions. Here UnitekFiber will briefly introduce what is CWDM optical module.

Understand CWDM Mux Demux

CWDM Mux Demux is an optical device that combines multiple optical signals with different wavelengths onto a single fiber for transmission and separates them at the receiving end. CWDM Mux Demux is a passive device that does not require external power. CWDM Mux Demux is cost-effective, requires less complex equipment, and enables longer transmission distances compared to other WDM technologies. CWDM Mux Demux finds applications in optical networking, telecommunications, and data centers.

The CWDM Mux Demux is a reliable and user-friendly passive device. It offers flexibility with various wavelength combinations ranging from 1270 nm to 1610 nm, with 20nm spacing. Depending on the specific application, the CWDM Mux Demux can be configured into different channels. When deploying a CWDM multiplexer in your network, it is essential to pair it with a passive cwdm multiplexer at the opposite end. This allows for the separation or demultiplexing of wavelengths, ensuring they are directed to the correct receivers. Typically, a CWDM Mux Demux serves as a multiplexer or demultiplexer at either end of the fiber cable span. However, it always needs to be used in pairs.