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Proceedings Paper

Phase-locking technique for stabilizing birefringent Sagnac interferometer-based current sensors
Author(s): Xiaojun Fang; George Z. Wang; Anbo Wang; Richard O. Claus
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Paper Abstract

Phase fading, intensity noise and zero sensitivity at small-signal are the three limitations of a Sagnac interferometer-based fiber optic current sensor. In this paper, a birefringent Sagnac interferometer is designed to maximize the small signal sensitivity, balance the intensity noise, and compensate the polarization coupling-induced sensitivity degradation in a birefringent Sagnac interferometer. By locking the birefringence of the sensing fiber to certain values, the spun fiber-based intrinsic fiber optic current sensor can achieve almost the same performance as an ideal sensor with zero birefringence.

Paper Details

Date Published: 3 January 1996
PDF: 7 pages
Proc. SPIE 2594, Self-Calibrated Intelligent Optical Sensors and Systems, (3 January 1996); doi: 10.1117/12.229230
Show Author Affiliations
Xiaojun Fang, Virginia Polytechnic Institute and State Univ. (United States)
George Z. Wang, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2594:
Self-Calibrated Intelligent Optical Sensors and Systems
Anbo Wang, Editor(s)

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