Optical/electronic system senses rotation and emits pulses at angular increments. System provides linear scale factor across wide range of rotation rates with no lockup at null. Design needs analog-to-digital converters with elaborate signal-processing circuits. Light from laser diode split evenly into two beams propagating in opposite directions around rotation-sensing coil of optical-fiber waveguide. Beams acquire phase difference proportional to rotation rate as they pass through coil. After emerging from coil, beams recombine in beam splitter, and coherent sum led to photodiode.


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    Title :

    Closed-Loop Optical Rotation Sensor


    Contributors:

    Published in:

    Publication date :

    1988-10-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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