IntroductionWavelength division multiplexing (WDM) technology is usually divided into coarse wavelength division multiplexing (CWDM) technology and dense wavelength division multiplexing (DWDM), widely used in a variety of optical communication network. Among them, DWDM system channel density is lar

CWDM technology utilizes optical division multiplexer to multiplex optical signals with different wavelengths to single fiber for transmission. In the receiving terminal of the link, through optical division demultiplexer, composite signals in the fiber are demultiplexed to the signals with differen

Metropolitan area network refers to the communication network which is built in a city. The transmission medium is mainly used with optical fiber. It is a high-bandwidth, multi-function and multi-service multimedia communication network integrating data, voice and video service. Now, with the growin

Wavelength division multiplexing（WDM）technology commonly divided into coarse wavelength division multiplexing (CWDM) technology and dense wavelength division multiplexing (DWDM) technology, which can be widely used in various optical telecommunication network, of which the channel density of DWDM sy

Definition:Coarse wavelength division multiplexing (CWDM) is a method of combining multiple signals on laser beams at various wavelengths for transmission along fiber optic cables, such that the number of channels is fewer than in dense wavelength division multiplexing (DWDM) but more than in standa

DefinitionDense Wavelength Division Multiplexing (DWDM) is an associate extension of optical networking. DWDM Technology devices mix the output from many optical transmitters for transmission across one fibre. At the receiving end, other DWDM Technology device separates the combined optical signals