A robust, accurate, broadband, AC sensor using fiber optics that is being developed for space applications at power frequencies as high as 20 kHz is described. It can also be used in low- and high-voltage 60-Hz terrestrial power systems and in 400-Hz aircraft systems. It is intrinsically immune to electromagnetic interference (EMI) 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 discussed, and the results of precision tests conducted at various temperatures within the wide operating range as well as the results of early EMI tests are reported.


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    Title :

    A fiber-optic current sensor for aerospace applications


    Additional title:

    Faseroptischer Stromsensor für die Raumfahrt


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


    Publication date :

    1990


    Size :

    5 Seiten, 12 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    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, Richard L. / Rose, A. H. / Tang, D. et al. | NTRS | 1990


    Fiber optic temperature sensor for aerospace applications

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


    Fiber-Optic Sensor Systems For Aerospace Applications

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