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Proceedings Paper

Refractometer based on a superimposed optical fiber grating
Author(s): Jie Zheng; Xinyong Dong; Chunliu Zhao; Shangzhong Jin
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Paper Abstract

A refractometer based on a superimposed optical fiber grating, where a fiber Bragg grating (FBG) with broadband reflection (~2.7nm) is superimposed in the rear part of a tilted fiber Bragg grating (TFBG), is proposed and experimentally demonstrated. The superimposed grating is immersed in liquid with different refractive index. Optical power reflected back by the FBG is modulated twice by the TFBG that greatly enhances the sensitivity. And by using the broadband reflection FBG, instead of a normal FBG, signal to noise ratio is also improved.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842154 (17 October 2012); doi: 10.1117/12.975188
Show Author Affiliations
Jie Zheng, China Jiliang Univ. (China)
Xinyong Dong, China Jiliang Univ. (China)
Chunliu Zhao, China Jiliang Univ. (China)
Shangzhong Jin, China Jiliang 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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