Optical fiber protection switch
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United States of America Patent
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Dec 25, 2007
Grant Date -
Apr 13, 2006
app pub date -
Nov 30, 2005
filing date -
Dec 7, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical fiber protection switch comprises an optical interface and an optical switching system. The optical interface exchanges optical signals with optical fibers that are deployed in a ring configuration. The optical switching system exchanges the optical signals with the optical interface. The optical switching system performs ring switching of the optical signals in the optical domain in response to a first fault. The optical switching system performs span switching of the optical signals in the optical domain in response to a second fault.
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