CWDM Mux/Demux Module
Coarse wavelength division multiplexer (CWDM) is a low-cost WDM transmission
technology for metro and access networks. In principle, CWDM is to use optical
multiplexer to multiplex optical signals of different wavelengths into a single fibre for
transmission. At the receiving end of the link, with the help of demultiplexer, the mixed
signals in the fibre are decomposed into signals of different wavelengths and connected
to the corresponding receiving equipment. Using thin film filter technology, it has the
characteristics of high isolation and high reliability.