Abstract:

As one of the most important parts of all-optical networks,ROADM brings benefits such as flexibility,low-power consumption,cost and efficient utilization of network resources.Consequently they have been deployed in volume over recent years in backbone and metro networks.The WSS,the key component of the ROADM,was described,followed by a description of the features and challenges of next generation WSS designs.Finally,the CDC ROADM,which was the likely next evolutionary step for the ROADM,was investigated along will the necessary components development.

Key words: WSS, LCoS, CDC ROADM