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Proceedings Paper

FMCW birefringent fiber strain sensors based on Sagnac rings
Author(s): Gang Zheng; Michael Campbell; Peter A. Wallace; A. S. Holmes-Smith
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Paper Abstract

This paper discusses different configurations of polarization maintaining fiber Sagnac ring strain sensors based on FMCW technology. Each sensor consists of a frequency-modulated single mode laser, a 100 meter length of single mode birefringent fiber ring and PIN photodiode detector. In each case, two opposite propagating beams in the fiber are employed to sense the variations in length due to strain, although the generation of the beat signal is different in each case. The final sensor specifications are very similar as both exhibit high resolution, large dynamic measurement range, large signal intensity, good signal contrast and long sensing fiber.

Paper Details

Date Published: 12 November 1996
PDF: 6 pages
Proc. SPIE 2837, Fiber Optic Gyros: 20th Anniversary Conference, (12 November 1996); doi: 10.1117/12.258176
Show Author Affiliations
Gang Zheng, Glasgow Caledonian Univ. (United Kingdom)
Michael Campbell, Glasgow Caledonian Univ. (United Kingdom)
Peter A. Wallace, Glasgow Caledonian Univ. (United Kingdom)
A. S. Holmes-Smith, Glasgow Caledonian Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 2837:
Fiber Optic Gyros: 20th Anniversary Conference
Eric Udd; Herve C. Lefevre; Kazuo Hotate, Editor(s)

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