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Proceedings Paper

In-fiber microsphere air-cavity Fabry-Perot interferometer for strain/temperature measurement
Author(s): Jun Ma; Wei Jin
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Paper Abstract

A novel in-fiber microsphere air-cavity Fabry-Perot interferometer (FPI) sensor is constructed and demonstrated for strain and temperature measurement. The microsphere air-cavity is formed by ablating, with a focused femtosecond infrared laser, the endface of a single mode fiber (SMF) to form a crater at its center, and then splices this fiber end to a second SMF using a fusion splicer. The sensor demonstrates a strain sensitivity of 2.44 pm/με and a low temperature sensitivity of 0.87 pm/ºC up to 600 ºC.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84217W (7 November 2012); doi: 10.1117/12.974839
Show Author Affiliations
Jun Ma, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Wei Jin, The Hong Kong Polytechnic Univ. (Hong Kong, 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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