Hello guys, Welcome to Africa's Largest Video Search Engine, and you are watching What is Flexible Grid Wavelength Selective Switch (WSS) and ROADM?. and this video is uploaded by Fiber Optics For Sale Co. at 2012-05-31T15:34:02-07:00. We are just promoting this video only for entertainment and educational purpose only. I hop you like our Video Search Engine. [pJ0SPaYxzEM]