30-07-2009, 05:05 PM
Dense wavelength division multiplexing (DWDM) is a fiber-optic transmission technique that employs light wavelengths to transmit data parallel-by-bit or serial-by-character.
The role of scalable DWDM systems in enabling service providers to accommodate consumer demand for ever-increasing amounts of bandwidth is important. DWDM is discussed as a crucial component of optical networks that allows the transmission of e-mail, video, multimedia, data, and voiceâ€carried in Internet protocol (IP), asynchronous transfer mode (ATM), and synchronous optical network/synchronous digital hierarchy (SONET/SDH), respectively, over the optical layer.
http://www.http://pptpdf.net//?file=/computer%20science%20and%20electronics/Dense%20wavelength%20division%20multiplexing.pdf&name=Dense%20wavelength%20division%20multiplexing.pdf