A Wavelength Selective Switch (WSS) is a key component in a Reconfigurable Optical Add-Drop Multiplexer (ROADM) system. A ROADM is a device used in optical networks that allows individual wavelengths, also known as channels, to be added, dropped, or passed through at a network node without converting the optical signals to electrical signals and back. This reconfigurability is crucial for flexible and efficient network management. The WSS is the component within the ROADM that provides the wavelength selectivity. It operates by selectively directing different wavelengths of light to different output ports. The WSS typically consists of a demultiplexer, a switching fabric....
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