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Proceedings Paper

Single-mode fiber sensor based on core-offset splicing
Author(s): Mei Zhou; Shenglai Zhen; Fei Liu; Jun Peng; Ling Li; Benli Yu
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Paper Abstract

An inter-mode interferometer based on a simple single-mode fiber by core-offset splicing is presented. Through manually adjusting the horizontal displacement and the angle of two sections of core-offset fiber, we can achieve maximum interference spectrum. Then we add a reflector at the end of the last single-mode fiber. This reflector can lead the light to propagate twice in the offset single mode fiber structure so that we can get larger interference intensity, in the experimental process we see a better extinction ratio. The proposed method can find application in strain, temperature and vibration measurements and so on. By measuring the extinction ratio (ER) variation or wavelength shift of the interference pattern in this paper, sensitivity measurement can be achieved. The sensitivity of strain and temperature without reflector is respectively 10.38 pm με and 31pm/ °C. When reflector added, it can increase the sensitivity of the strain and temperature at a certain degree.

Paper Details

Date Published: 22 November 2011
PDF: 7 pages
Proc. SPIE 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 81990G (22 November 2011); doi: 10.1117/12.904819
Show Author Affiliations
Mei Zhou, Anhui Univ. (China)
Shenglai Zhen, Anhui Univ. (China)
Fei Liu, Anhui Univ. (China)
Jun Peng, Beijing Institute of Micro Technology (China)
Ling Li, Anhui Univ. (China)
Benli Yu, Anhui Univ. (China)

Published in SPIE Proceedings Vol. 8199:
2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications
Brian Culshaw; YanBiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan, Editor(s)

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