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Proceedings Paper

Novel refractometer based on a phase-shift-adjustable fiber Bragg grating
Author(s): Wenjun Zhou; Xinyong Dong; Chun-Liu Zhao; Lan Li; Changyu Shen; Shangzhong Jin
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Paper Abstract

A novel method to measure refractive index by using a phase-shift-adjustable fiber Bragg grating (PSA-FBG) is proposed and demonstrated. The PSA-FBG was obtained by cutting a uniform FBG in the middle and introducing a small air gap between the two FBG halves as phase shift. Tested materials were filled into the small gap so that the quantity of the phase shift is related to refractive index of the tested material. Measurement of refractive index can be carried out by measuring wavelength variation of the phase shift-induced narrow transmission window of the PSA-FBG. Experimental results agree well with numerical analysis, showing a uniform refractive index sensitivity of 0.86 nm/u.r.i with resolution of 0.012.

Paper Details

Date Published: 12 October 2010
PDF: 6 pages
Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 765664 (12 October 2010); doi: 10.1117/12.865835
Show Author Affiliations
Wenjun Zhou, China Jiliang Univ. (China)
Xinyong Dong, China Jiliang Univ. (China)
Chun-Liu Zhao, China Jiliang Univ. (China)
Lan Li, China Jiliang Univ. (China)
Changyu Shen, China Jiliang Univ. (China)
Shangzhong Jin, China Jiliang Univ. (China)


Published in SPIE Proceedings Vol. 7656:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Jose M. Sasian; Libin Xiang; Sandy To, Editor(s)

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