It is designed to increase the ability of a fiber optic network without adding additional fiber.
The wavelengths of CWDM channels are spaced 20 nm apart that enables the use of low-cost, uncooled lasers.
The wavelengths usually vary from 1270 nm to 1610 nm.
Today, CWDM Mux/Demux (multiplexer/demultiplexer) module is a crucial device to boost the current fiber cable capacity by transmitting multiple wavelengths with as many as 18 signal channels on the single fiber.
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