Low-noise fiber-optic sensor utilizing a laser source

Low-noise fiber-optic sensor utilizing a laser source

A fiber-optic sensor includes an optical fiber coil and a laser source optically coupled to the coil. Light from the source is transmitted to the coil as a first optical signal and a second optical signal counter-propagating through the coil. The optical paths of the first optical signal and the sec...

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Hauptverfasser: Blin, Stephane, Digonnet, Michel J. F, Kino, Gordon S, Lloyd, Seth
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Sprache:eng
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creator Blin, Stephane
Digonnet, Michel J. F
Kino, Gordon S
Lloyd, Seth
description A fiber-optic sensor includes an optical fiber coil and a laser source optically coupled to the coil. Light from the source is transmitted to the coil as a first optical signal and a second optical signal counter-propagating through the coil. The optical paths of the first optical signal and the second optical signal are substantially reciprocal with one another and the first optical signal and the second optical signal are combined together after counter-propagating through the coil to generate a third optical signal. The laser source is frequency-modulated or can have a coherence length longer than a length of the coil.
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title Low-noise fiber-optic sensor utilizing a laser source
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