Concatenated magneto-optic field sensors

Concatenated magneto-optic field sensors

  • CN 1,248,008 C
  • Filed: 09/12/1996
  • Issued: 03/29/2006
  • Est. Priority Date: 11/22/1995
  • Status: Active Grant
First Claim
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1. device that detects the electric current that flows through in the conductor is characterized in that it comprises:

  • Light source;

    The first Faraday effect sensing unit with input and output;

    First device with the input of described light source and described first sensing unit coupling;

    The second Faraday effect sensing unit with input and output;

    Second device with the input coupling of the output of described first sensing unit and described second sensing unit;

    Fluorescence detector;

    AndThe 3rd device that the output and the described fluorescence detector of described second sensing unit is coupled together;

    One or more additional faraday'"'"'s sensing units;

    AndBe used for the corresponding intrument of between described first sensing unit and the second sensing unit described additional sensing unit of series coupled, wherein, described first, second and additional sensing unit are straight fiber segment, they arrange the composition rule polygon, make that described device can be owing to the crooked birefringence effect that produces;

    Described first sensing unit comprises first sensor fibre with first and second ends, described first end and the coupling of described light source;

    Described second sensing unit comprises second sensor fibre with first and second ends;

    Described second coupling device and be used for optional additional faraday'"'"'s sensing unit and comprise a polarization fiber.

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