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In Rayleigh scatter-based distributed fiber optic sensing, a coherent laser pulse is sent along an optic fiber, and scattering sites within the fiber cause the fiber to act as a distributed interferometer with a gauge length approximately equal to the pulse length. The intensity of the reflected light is measured as a function of time after ...
Distributed fiber-optic sensing technology can be used for leak detection through DAS and DTS. [26] AP Sensing has a regional office in Bahrain, and operates throughout the Middle East. [27] Their Distributed Fibre Optic Sensing is designed to monitor pipeline leaks, and is used by the Kuwait Oil Company and the Abu Dhabi National Oil Company.
A fiber-optic sensor is a sensor that uses optical fiber either as the sensing element ("intrinsic sensors"), or as a means of relaying signals from a remote sensor to the electronics that process the signals ("extrinsic sensors"). Fibers have many uses in remote sensing.
For distributed temperature sensing often a code correlation technology [2] [3] [4] is employed which carries elements from both principles. OTDR was developed more than 20 years ago and has become the industry standard for telecom loss measurements which detects the—compared to Raman signal very dominant— Rayleigh backscattering signals.
A fiber Bragg grating (FBG) is a type of distributed Bragg reflector constructed in a short segment of optical fiber that reflects particular wavelengths of light and transmits all others. This is achieved by creating a periodic variation in the refractive index of the fiber core, which generates a wavelength-specific dielectric mirror .
Luna Innovations holds more than 450 U.S. and international patents in fiber optics and specializes in products for fiber-optic testing of components, modules and networks, as well as integrated optics and distributed fiber-optic sensor solutions. Their fiber-optic test and measurement devices include optical analyzers, reflectometers, tunable ...
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