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    Fiber-Optic Michelson Interferometer with Faraday Mirrors for Acoustic Sensing using a 3 × 3 Coupler and Symmetric Demodulation Scheme

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    Gartland_PL_T_2016.pdf (2.526Mb)
    Downloads: 6764
    Date
    2016-11-02
    Author
    Gartland, Peter Lanier
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    Abstract
    For the past 40 years, acoustic sensing has been a major avenue for the growth of interfero- metric fiber-optic sensors. Fiber-optic acoustic sensors have found uses in military, commer- cial, and medical applications. An interferometric fiber-optic acoustic sensor is presented utilizing the Michelson interferometer configuration with Faraday mirrors to eliminate po- larization fading. A 3 × 3 coupler is used as the beamsplitting component, and a symmetric demodulation algorithm is applied to recover the phase signal. This sensor has a theoretical resolution of 5.5 pico-strains and room to improve. Such improvements are discussed in the conclusion.
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    http://hdl.handle.net/10919/73370
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    • Masters Theses [21540]

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