Detailed Product Description CWDM SYSTEM, Coarse Wavelength Division Multiplexing, as a sort of utilizable short distance WDM transmission system, ... multi-protocol, optical wavelength services.GP-4/8-CWDM can be used in 4/8 in 1 multiplexing fiber-link, replacing ... The equipment is exploited by using CWDM technology, multiplexing multi-ray channel whose wavelength interval is 20 nm on one or a ...