Device and method for monitoring signal direction in an optical communications network
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United States of America Patent
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N/A
Issued Date -
Dec 6, 2001
app pub date -
May 31, 2001
filing date -
Jun 2, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and device are disclosed for monitoring communication activity within an optical communications network. The device includes a pair of optical components for tapping optical signals transported across a fiber optic line in the optical communications network. At least one optical performance monitor (OPM) receives tapped signals from the pair of optical components. An optical switch, controlled by the OPM, selectively provides to the at least one OPM tapped signals corresponding to optical signals traveling on the fiber optic line in a first direction. The OPM measures the various signal characteristics of the tapped signals when the optical switch is opened and closed, and determines the direction of travel of optical signals on the fiber optic line based upon the measured signal characteristics.
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