发明名称 |
Dynamic optical add-drop multiplexers and wavelength-routing networks with improved survivability and minimized spectral filtering |
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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申请公布号 |
US6208443(B1) |
申请公布日期 |
2001.03.27 |
申请号 |
US19980135957 |
申请日期 |
1998.08.18 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
LIU KAREN;WANG WEYL-KUO;YUE CHAOYU |
分类号 |
G02B6/34;H04J14/02;H04Q11/00;(IPC1-7):H04J14/02 |
主分类号 |
G02B6/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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