Detection bandwidth of fibre-optic current sensors based on Faraday effect
Detection bandwidth of fibre-optic current sensors based on Faraday effect
Current sensing based on the Faraday Effect in optical fibers is a well-established area in the landscape of sensor technologies. However, the optical behavior that sets an upper limit on the detection bandwidth is often overlooked. The underlying mechanisms are explored in this analysis to raise awareness about their impact on the measurement results. These findings show that the Faraday Effect cancellation and pulse broadening grow with increasing signal frequency, which result in suppression and distortion of the optical response. A correction factor is proposed for alternating and pulsed signals when using the simplified equation, to maintain an accurate measure of the peak current.
626-627
Chen, G.Y.
b766d3f7-a6dc-4c15-8f00-17ad044348c1
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7
2014
Chen, G.Y.
b766d3f7-a6dc-4c15-8f00-17ad044348c1
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7
Chen, G.Y. and Newson, T.P.
(2014)
Detection bandwidth of fibre-optic current sensors based on Faraday effect.
Electronics Letters, 50 (8), .
(doi:10.1049/el.2014.0426).
Abstract
Current sensing based on the Faraday Effect in optical fibers is a well-established area in the landscape of sensor technologies. However, the optical behavior that sets an upper limit on the detection bandwidth is often overlooked. The underlying mechanisms are explored in this analysis to raise awareness about their impact on the measurement results. These findings show that the Faraday Effect cancellation and pulse broadening grow with increasing signal frequency, which result in suppression and distortion of the optical response. A correction factor is proposed for alternating and pulsed signals when using the simplified equation, to maintain an accurate measure of the peak current.
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Published date: 2014
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 364300
URI: http://eprints.soton.ac.uk/id/eprint/364300
ISSN: 0013-5194
PURE UUID: 59e2ee5a-03c1-48f9-8564-f76476cc0845
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Date deposited: 24 Apr 2014 08:02
Last modified: 14 Mar 2024 16:33
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Author:
G.Y. Chen
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