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Proceedings Paper

A curvature sensor using a novel side-leakage photonic crystal fiber based Sagnac interferometer
Author(s): Shuqin Lou; Xinzhi Sheng; Liwen Wang; Guolu Yin
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Paper Abstract

A novel side-leakage PCF with high birefringence is designed and fabricated by introducing a linear side-leakage region into both sides of the elliptical Ge-doped core. A curvature sensor using the homemade side-leakage PCF based Sagnac interferometer is proposed and demonstrated experimentally. Experimental result shows that a high bending sensitivity of 10.798nm/m-1 can be achieved when the linear side-leakage region is in the vertical with the direction of curvature. With the measuring matrix obtained from sensor's sensitivity matrix by measuring the wavelength shifts of two dip in the transmission spectrum, this sensor can also realize simultaneous measurement of curvature and temperature.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84212S (17 October 2012); doi: 10.1117/12.968600
Show Author Affiliations
Shuqin Lou, Beijing Jiaotong Univ. (China)
Xinzhi Sheng, Beijing Jiaotong Univ. (China)
Liwen Wang, Beijing Jiaotong Univ. (China)
Guolu Yin, Beijing Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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