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Title: Refractive index sensor based on θ-shaped microfiber resonator and Vernier effect
Authors: Xu, Zhilin
Luo, Yiyang
Sun, Qizhen
Shum, Perry Ping
Wu, Zhifang
Shao, Xuguang
Liu, Deming
Keywords: Fiber optics sensors
Refractive index sensing
Issue Date: 2017
Source: Xu, Z., Luo, Y., Sun, Q., Shum, P. P., Wu, Z., Shao, X., et al. (2017). Refractive index sensor based on θ-shaped microfiber resonator and Vernier effect. Proceedings of SPIE, 10323, 103233N-.
Conference: 25th International Conference on Optical Fiber Sensors
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.
DOI: 10.1117/12.2265277
Schools: School of Electrical and Electronic Engineering 
Rights: © 2017 SPIE. This paper was published in Proceedings of SPIE and is made available as an electronic reprint (preprint) with permission of SPIE. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers

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