On-line sagnac interferometric distributed fiber-optic leakage detection device

An on-line Sagnac interferometric distributed fiber-optic leakage detection device comprising a light generator, an optical fiber coupler, a hollow pipeline, a Faraday rotator mirror, a sensing optical fiber, a delaying optical fiber, a photo detection device and a spectrum analyzer. Signals resulti...

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Bibliographic Details
Main Authors LIN WUU-WEN, HUANG SHIHU
Format Patent
LanguageEnglish
Published 11.04.2002
Edition7
Subjects
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Summary:An on-line Sagnac interferometric distributed fiber-optic leakage detection device comprising a light generator, an optical fiber coupler, a hollow pipeline, a Faraday rotator mirror, a sensing optical fiber, a delaying optical fiber, a photo detection device and a spectrum analyzer. Signals resulting from a leaky pipeline are obtained by the linear leakage detection system. The signals are analyzed by the spectrum analyzer to discover any null frequency shift so that exact location of the leakage point along the hollow pipeline can be computed.
Bibliography:Application Number: US20000741613