Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2001-05-24
2009-06-02
Singh, Dalzid (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S016000, C398S020000
Reexamination Certificate
active
07542674
ABSTRACT:
Systems and methods for verifying performance at an intermediate point in an optical link are provided by virtue of one embodiment of the present invention. One application is locating a fault along a long optical link while minimizing the need for trained personnel to inspect and monitor the link at numerous widely separated locations. At an intermediate point in the link, a portion of the optical signal present is tapped off and demodulated. By use of error correction decoding techniques on the demodulated data, the performance of the link up until that intermediate point may be verified.
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Barozzi Gianpaolo
Macchi Mauro
Marchio Andrea
Cisco Technology Inc.
Singh Dalzid
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