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Proceedings Paper

Interferometric phase sensor using single-ended polarization maintaining fiber in Sagnac interferometer
Author(s): Yeo Reum Yoon; Min Ho Seo; Hwi Don Lee; Myung Yung Jeong; Chang-Seok Kim
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Paper Abstract

An interferometric phase sensor is proposed and demonstrated for strain sensing based on a Sagnac interferometer including polarization maintaining fiber (PMF). Since the conventional PMF Sagnac interferometer includes a PMF in the loop by splicing both ends with the two ends of 50:50 coupler, it has been difficult to apply the two-ended PMF in the practical applications. In this paper, we propose a simple configuration by adding one more 50:50 coupler in the Sagnac loop to connect the PMF with one splicing process for a remote sensing position. Instead of tracking the shift of periodic spectrum by optical spectrum analyzer, higher sensitive method is proposed by interrogating a phase variation of the interferometric optical signal from the modified Sagnac interferometer including single-ended PMF.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77531F (17 May 2011); doi: 10.1117/12.885973
Show Author Affiliations
Yeo Reum Yoon, Pusan National Univ. (Korea, Republic of)
Min Ho Seo, Pusan National Univ. (Korea, Republic of)
Hwi Don Lee, Pusan National Univ. (Korea, Republic of)
Myung Yung Jeong, Pusan National Univ. (Korea, Republic of)
Chang-Seok Kim, Pusan National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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