DENSE WAVELENGTH DIVISION MULTIPLEXIN
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Swapnil Salunkhe
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DEPARTMENT OF E&TC
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R.C.Patel Institute Of Technology
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Swapnil2001@gmail.com
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ABSTRACT
The race for unprecedented bandwidth is on - and DWDM(Dense Wave-length Division Multiplexing) is opening the way. DWDM is the technology that allows multiple streams of data to flow in one optical fiber of optical communication network. DWDM is the key technology at the heart of new systems and networks that offers more bandwidth at less cost. Soon, DWDM promises to change bandwidth from a premium to a commodity item. DWDM: Networks, Devices, and Technology provides a comprehensive treatment of DWDM, its technology, systems, and networks, as well as engineering design.Over the last decade, fiber optic cables have been installed by carriers as the backbone of their interoffice networks, becoming the mainstay of the telecommuni-cations infrastructure. Using time division multiplexing
(TDM) technology, carriers now routinely transmit information at 2.4 Gb/s on a single fiber, with some deploying equipment that quadruples that rate to 10 Gb/s. The revolution in high bandwidth applications and the explosive growth of the Internet, however, have created capacity demands that exceed traditional TDM limits. As a result, the once seemingly inexhaustible bandwidth promised by the deployment of optical fiber in the 1980s is being exhausted. To meet growing demands for bandwidth, a technology called Dense Wavelength Division Multiplexing (DWDM) has been developed that multiplies the capacity of a single fiber. DWDM systems being deployed today can increase a single fiber’s capacitysixteen fold, to a throughput of 40 Gb/s!