Date Added: Nov 2012
Due to huge usage of internet and growing business, bandwidth required prove to be difficult resource to fulfill with normal structure of networks. Moreover to provide a good level of quality service is also a big concern. One big solution comes in form of Wavelength Division Multiplexing (WDM). Wavelength Division Multiplexing (WDM) is an important technique to exploit the huge bandwidth of the optical fiber. There has been a wide deployment of WDM transmission technology in today's optical networks. WDM is widely used technology in developed countries and is based on the transmission of several light beams of different wavelength simultaneously through an optical fiber.