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  • Received: Dec. 4, 2006

    Accepted: --

    Posted: Jun. 27, 2007

    Published Online: Jun. 27, 2007

    The Author Email: Qing Ye (yeqing@mail.siom.ac.cn)

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    Feng Liu, Qing Ye, Jianxin Geng, Ronghui Qu, Zujie Fang. Study of fiber-optic current sensing based on degree of polarization measurement[J]. Chinese Optics Letters, 2007, 5(5): 267

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Chinese Optics Letters, Vol. 5, Issue 5, 267 (2007)

Study of fiber-optic current sensing based on degree of polarization measurement

Feng Liu, Qing Ye*, Jianxin Geng, Ronghui Qu, and Zujie Fang

Author Affiliations

  • Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800

Abstract

A novel fiber-optic current sensing scheme is proposed by converting the Faraday rotation to the optical signal's degree of polarization (DOP) change. In this scheme, the lightwave passes through a fiber resonant cavity multiply and experiences Faraday rotation simultaneously. Its main merit is immunity from the environment disturbance to the fiber used in ordinary Faraday rotation sensor. Brief theoretical analysis and simulation are given to show its basic characteristics. Experimental results are demonstrated and the feasibility of the proposed method is also shown.

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