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Over the past 25 years a number of fiber optic sensors have been developed to address fence and buried perimeters, and pipeline security. Today, sensors that locate targets along the length of the fiber sensor dominate the long-range perimeter market. There are a number of fiber optic sensors that locate targets including sensors based on interferometry and C-OTDR (Coherent Optical Time Domain Reflectometry)...
Leaks in pipelines transporting oil, gas, or any tluid may cause enormous propern and environmental damage, hence early leak detection and accurate localization are highly desirable. Sensors to detect leaks can be broadly classified into internal and external sensors depending on where they are installed. In general, internal sensors have matured over decades while external sensors based on fiber...
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