Twisted-fiber electric current sensor with compensation for temperature and polarization perturbation

Xiaopeng Dong; Beatrice C.B. Chu; Kin Seng Chiang

doi:10.1117/12.318160

13 August 1998 Twisted-fiber electric current sensor with compensation for temperature and polarization perturbation

Xiaopeng Dong, Beatrice C.B. Chu, Kin Seng Chiang

Proceedings Volume 3555, Optical and Fiber Optic Sensor Systems; (1998) https://doi.org/10.1117/12.318160
Event: Photonics China '98, 1998, Beijing, China

Abstract

Electric current sensor employing twisted fiber with a new compensation method for temperature and polarization perturbation is presented and demonstrated for ac current detection. The problem of sensor bias drifting caused by the change of twist induced circular birefringence of the fiber versus the ambient temperature, or by the mechanical perturbations in the sensor leads, is addressed and solved by a novel signal processing method. With the single Wollaston prism scheme described in the paper, the compensation is valid only for limited bias phase drift. However, when the modified compensation scheme is introduced, the current signal can be obtained for arbitrary bias phase drift. The compensation method is demonstrated effective and which provides a new approach for the practical application of twisted fiber in current sensor.

Citation Download Citation

Xiaopeng Dong, Beatrice C.B. Chu, and Kin Seng Chiang "Twisted-fiber electric current sensor with compensation for temperature and polarization perturbation", Proc. SPIE 3555, Optical and Fiber Optic Sensor Systems, (13 August 1998); https://doi.org/10.1117/12.318160

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