Coarse wavelength division multiplexing technology and application in metropolitan area network

Introduce CWDM basic concept and technique characteristics, in the aspect characteristicses, such as cost and function etc., it makes it is apply in the metropolitan area network.With the analysis characteristics and development of the metropolitan area network request,combine and the DWDM technical comparison, introduce to apply the CWDM technical advantage and applied project of the net in the metropolitan area network. Combine with other technique to together, make CWDM more and more extensive in the metropolitan area network application.