| 摘要 |
This invention is an optical network element (ONE) for bi-directional WDM ring networks. It consists of a west-side bi-directional OADM 400, an east-side bi-directional OADM 405, two west-side optical multiplexer/demultiplexer pairs 440 and 445, and two east-side optical multiplexer/demultiplexer pairs 450 and 455. Dynamic optical switching between different bi-directional optical ports is accomplished by a 1-dimentional analog MEMS channel mirror array. The optical network element supports dynamic bi-directional wavelength add-drop, optical layer protection switching on per wavelength basis, and optical channel loopback, etc.
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