DISTRIBUTED ACOUSTIC DEFECT DETECTION SYSTEM UTILIZING OPTICAL INTERFEROMETERS
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United States of America
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Feb 20, 2025
app pub date -
Aug 16, 2024
filing date -
Aug 16, 2024
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Abstract
A distributed acoustic sensing system can include an optical interferometer. The optical interferometer can include an optical fiber coupler to split optical light signals, and an optical fiber delay coil to introduce a controlled time delay in one of the paths. At least one path can form a loop, enabling controlled delay and temporary storage of light, resulting in interference patterns. The system can progressively mitigate noise or distortion, improving sensitivity and/or signal reception quality for defect detection.
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