Passive hydrophones with a minimal footprint are useful for a variety of underwater monitoring applications; a fiber optic hydrophone is being investigated. Fiber optic hydrophones have been used in offshore moored applications, and have the capability to cover large areas. A resonant hydrophone using a fiber Bragg grating (FBG) transducer for limited bandwidth operation is described and compared with predicted diaphragm resonances. A battery-power readout system using a laser diode source that can typically operate for a full day, and can be used in off-mooring applications such as in autonomous underwater vehicles, is outlined.


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    Title :

    Diaphragm resonance-based fiber optic hydrophone


    Contributors:

    Conference:

    Photonics in the Transportation Industry: Auto to Aerospace III ; 2010 ; Orlando,Florida,United States


    Published in:

    Proc. SPIE ; 7675 ; 76750O


    Publication date :

    2010-04-19





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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