Segmented poled optical fiber for fiber optic sensor and phased array
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United States of America Patent
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Jul 14, 2020
Grant Date -
Feb 15, 2018
app pub date -
Jan 11, 2017
filing date -
Aug 11, 2016
priority date (Note) -
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Abstract
A fiber optical sensor and methods for sensing a physical quantity such as rotation using the same. The sensor has an optical fiber supporting propagation of light that is configured as an interferometer. One or more segments of the optical fiber, where the segments may be non-contiguous, are poled in such a manner that a phase shift in light propagating through the fiber is created in response to application of a voltage to an electrode thereby inducing an electric field across a poled segment of the fiber. A phase modulator comprising multiple poled segments is additionally described. Applying phase-shifting effects differentially across poled segments of optical fibers of an array of optical fibers may also allow for steering an optical beam.
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