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Interferometric current sensors using optical fibres

Interferometric current sensors using optical fibres

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© The Institution of Electrical Engineers
Published

Two types of fibre-optic current sensor have been developed and successfully tested in the laboratory: magnetostrictive jacketing materials and a heating effect, to produce a phase shift in the optical fibre. A ruggedised all-fibre interferometer powered by a diode laser was used to detect the phase changes induced by the electrical current.

Inspec keywords: electric sensing devices; electric current measurement; light interferometry; fibre optics

Other keywords: optical fibres; magnetostrictive jacketing materials; heating effect

Subjects: Fibre optics; Sensing devices and transducers; Current measurement; Optical interferometry; Electrical instruments and techniques; Fibre optics and fibre waveguides

References

    1. 1)
      • S.C. Rashleigh , R. Ulrich . Magneto-coupling current sensing with birefringent fibers. Appl. Phys Lett.
    2. 2)
      • S.C. Rashleigh . Acoustic sensing with a single coiled monomode fiber. Opt. Lett
    3. 3)
      • D.A. Jackson , A. Dandridge , S.K. Sheem . Measurement of small phase shifts using a single-mode optical-fiber interferometer. Opt. Lett.
    4. 4)
      • C.A. Villarruel , S.K. Sheem , K.P. Koo . , Unpublished design.
    5. 5)
      • A. Dandridge , A.B. Tveten , G.H. Sigel , Jun. , E.J. West , T.G. Giallorenzi . Optical fibre magnetic field sensors. Electron. Lett , 11
    6. 6)
      • G.L. Tangonan , D.I. Persechini , R.J. Morrison , J.A Wysocki . Current sensing with metal-coated multimode optical fibres. Electron. Lett. , 25
    7. 7)
      • D.A. Jackson , R. Priest , A. Dandridge , A.B. Tveten . Elimination of drift in a single-mode optical fiber interferometer using a piezoelectrically stretched coiled fiber. Appl. Opt.
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