A robust, accurate, broadband, alternating current sensor using fiber optics is being developed for space applications at power frequencies as high as 20 kHz. It can also be used in low and high voltage 60-Hz terrestrial power systems and in 400-Hz aircraft systems. It is intrinsically electromagnetic interference (EMI) immune and has the added benefit of excellent isolation. The sensor uses the Faraday effect in optical fiber and standard polarimetric measurements to sense electrical current. The primary component of the sensor is a specially treated coil of single-mode optical fiber, through which the current carrying conductor passes. Improved precision is accomplished by temperature compensation by means of signals from a novel fiber-optic temperature sensor embedded in the sensing head. The technology used in the sensor is examined and the results of precision tests conducted at various temperatures within the wide operating range are given. The results of early EMI tests are also given.


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    Title :

    A fiber-optic current sensor for aerospace applications


    Contributors:
    Patterson, Richard L. (author) / Rose, A. H. (author) / Tang, D. (author) / Day, G. W. (author)


    Publication date :

    1990-12-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




    A fiber-optic current sensor for aerospace applications

    Patterson, R.L. / Rose, A.H. / Tang, D. et al. | IEEE | 1990


    A fiber-optic current sensor for aerospace applications

    Patterson, R.L. / Rose, A.H. / Tang, D. et al. | Tema Archive | 1990


    Fiber-Optic Sensor Systems For Aerospace Applications

    Udd, E. / Michal, R. J. / Higley, S . E. et al. | SPIE | 1988


    Fiber optic temperature sensor for aerospace applications

    Jensen, Stephen C. / Tilstra, Shelle D. / Barnabo, Geoffrey A. et al. | SPIE | 1991