OPTICAL WAVELENGTH ADD/DROP MULTIPLEXER
专利汇可以提供OPTICAL WAVELENGTH ADD/DROP MULTIPLEXER专利检索，专利查询，专利分析的服务。并且An optical wavelength add/drop multiplexer provides communications between two optical links (10, 15) supporting wavelength division multiplexing (WDM). A wavelength slicer (100) spatially separates the input signal into two sets of channels. An optical filter (201-204), such as an interference filter, spatially separates the subset of the input channels into an array of separated channels. A programmable optical add/drop switch array (500) selectively routes channels from an array of input ports to an array of drop ports, substitutes channels from an array of add ports in place of the dropped channels, and routes the remaining input channels and added channels to an array of output ports. The channels from the output ports of the said add/drop switch array (500) are then combined and transmitted into the second optical link (15). A network of wavelength slicers can be used to spatially separate the input signal into a larger number of sets of channels that can either be accessed by a number of add/drop switch arrays, or passed unchanged as "express lanes" (13) to the second optical link (15). In an alternative embodiment, a circulated drop filter consisting of an optical circulator (901-904) and a series of fiber Bragg gratings (951-954) is used to select a predetermined series of input channels to be processed by the add/drop switch array (501, 502), with the remaining channels being passed by the circulated drop filter as express lanes.，下面是OPTICAL WAVELENGTH ADD/DROP MULTIPLEXER专利的具体信息内容。
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10 一种医疗双摄像设备
