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Dynamic optical add-drop multiplexers and wavelength-routing networks with improved survivability and minimized spectral filtering
Dynamic optical add-drop multiplexers and wavelength-routing networks with improved survivability and minimized spectral filtering
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机译:动态光分插复用器和波长路由网络,具有更高的生存能力和最小化的光谱过滤
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摘要
A method and apparatus for constructing an optical wavelength- routing network in which each network node is a dynamic add-drop multiplexer (OADM) with minimized spectral filtering effect on pass- through channels and survivability upon power failure. By using cascaded tunable reflection filters as the building blocks, strictly add-drop non- blocking OADMs for single input/output fibers, double input/output fibers, and 3 input/output fibers can be constructed for application to unidirectional and bidirectional ring networks and mesh networks of arbitrary degree. Methods and apparatus for minimizing various types of out-of-band and in-band crosstalk occurring within the dynamic OADMs are also described.
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