Two wavelength optical interferometric pressure switch and pressure transducers
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United States of America Patent
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Apr 17, 2018
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May 13, 2016
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May 14, 2015
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Abstract
Certain implementations of the disclosed technology may include Fabry-Perot Interferometer (FPI)-based sensors systems and methods for measuring a desired stimulus. In accordance with an example implementation of the disclosed technology, a method is provided for receiving, by a Fabry-Perot Interferometer (FPI) sensor, first interrogation light having a first wavelength and second interrogation light having a second wavelength. The FPI sensor is configured to alter the received first interrogation light and the second interrogation light responsive to a measurement stimulus. The method includes detecting, by a first optical detector, a measurement signal responsive to receiving the altered first interrogation light and the altered second interrogation light from the FPI sensor, the measurement signal corresponding to the measurement stimulus. The method includes producing a measurement output signal, the measurement output signal representing an intensity of the measurement signal. The method further includes outputting the measurement output signal.
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