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Proceedings Paper

Refractive index sensor based on θ-shaped microfiber resonator and Vernier effect
Author(s): Zhilin Xu; Yiyang Luo; Qizhen Sun; Perry Ping Shum; Zhifang Wu; Xuguang Shao; Deming Liu
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Paper Abstract

A compact refractive index (RI) sensing probe with controllable sensitivities based on a θ-shaped microfiber resonator and Vernier effect is reported. By cascading the θ-shaped microfiber resonator with a fiber Fabry-Perot interferometer, Vernier effect is generated to enhance the RI sensitivity. Both theoretical analyses and experimental results demonstrate that the RI sensitivity can be tuned by changing the cavity length of the θ-shaped microfiber resonator. The RI sensitivity is widely tuned from 311.77nm/RIU to 2460.07nm/RIU in the experiment. The θ-shaped microfiber resonator and the proposed method of generating Vernier effect could find important applications in optical fiber sensing field.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103233N (23 April 2017); doi: 10.1117/12.2265277
Show Author Affiliations
Zhilin Xu, Nanyang Technological Univ. (Singapore)
Yiyang Luo, Huazhong Univ. of Science and Technology (China)
Qizhen Sun, Huazhong Univ. of Science and Technology (China)
Perry Ping Shum, Nanyang Technological Univ. (Singapore)
CINTRA CNRS/NTU/THALES (Singapore)
Zhifang Wu, Nanyang Technological Univ. (Singapore)
CINTRA CNRS/NTU/THALES
Xuguang Shao, Nanyang Technological Univ. (Singapore)
CINTRA CNRS/NTU/THALES
Deming Liu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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