In-fiber microsphere air-cavity Fabry-Perot interferometer for strain/temperature measurement

Jun Ma; Wei Jin

doi:10.1117/12.974839

7 November 2012 In-fiber microsphere air-cavity Fabry-Perot interferometer for strain/temperature measurement

Jun Ma, Wei Jin

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84217W (2012) https://doi.org/10.1117/12.974839
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

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.

Citation Download Citation

Jun Ma and Wei Jin "In-fiber microsphere air-cavity Fabry-Perot interferometer for strain/temperature measurement", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84217W (7 November 2012); https://doi.org/10.1117/12.974839

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