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Electric current sensors employing spun highly-birefringent optical fibres

Laming, R.I. and Payne, D.N. (1989) Electric current sensors employing spun highly-birefringent optical fibres Journal of Lightwave Technology, 7, (12), pp. 2084-2094. (doi:10.1109/50.41634).

Record type: Article


Highly elliptically birefringent fibers have been fabricated by spinning a linearly birefringent fiber during the draw. These fibers are particularly interesting for application as Faraday-effect fiber current monitors, since, in contrast with conventional fibers, they can be wound in small multiturn coils while retaining their sensitivity. The fiber and its exploitation in three optical schemes are modeled using Jones calculus and also experimentally investigated. A simple optical configuration is proposed, combining the elliptically birefringent fiber and a broad-spectrum light source. An accurate, compact, and robust current monitor is obtained. The sensor is characterized by a measurement repeatability of ± 0.5 percent, a temperature drift of 0.05 percent/°C and a sensitivity of 1 mA rms/ Hz^1/2. Further, we predict the performance of this sensor with optimized fiber length for a given measurement bandwidth.

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Published date: 1989
Organisations: Optoelectronics Research Centre


Local EPrints ID: 78451
ISSN: 0733-8724
PURE UUID: 6cb99413-116a-426b-a133-140d62ab7cb3

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:24

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Author: R.I. Laming
Author: D.N. Payne

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