CWDM wdm device

As Internet IP data business growth, the cause of the bandwidth of the transmission line increasing demand. Although DWDM (DWDM) technology as the most effective method of solving circuit bandwidth capacity, but CWDM (coarse wavelength division multiplexing) technology in the system cost, DWDM than performance and maintenance etc, it has advantage. In order to solve intracity networks and access network bandwidth bottlenecks, CWDM arises at the historic moment. Families with