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Proceedings Paper

In-fiber Michelson interferometer based on double-cladding fiber for refractive index sensing
Author(s): Fufei Pang; Huanhuan Liu; Na Chen; Yunqi Liu; Xianglong Zeng; Zhenyi Chen; Tingyun Wang
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Paper Abstract

An in-fiber Michelson interferometer is proposed based on a double-cladding (DC) special fiber. With the DC special fiber, light wave can be partially coupled into outer cladding. The in-fiber Michelson interferometer can be constructed by splicing a length of DC fiber into standard single mode fiber (SMF). The interferometer is very sensitive to ambient refractive index change because fiber cladding is as one of interference arms. A sensitivity of 36nm/RIU has been achieved in the range of 1.33~1.40 in this work. The proposed technique has the dominant advantage of simple fabrication process, which can be expected to have wide applications in biosensors and chemical sensors.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75036Y (5 October 2009); doi: 10.1117/12.834097
Show Author Affiliations
Fufei Pang, Shanghai Univ. (China)
Huanhuan Liu, Shanghai Univ. (China)
Na Chen, Shanghai Univ. (China)
Yunqi Liu, Shanghai Univ. (China)
Xianglong Zeng, Shanghai Univ. (China)
Zhenyi Chen, Shanghai Univ. (China)
Tingyun Wang, Shanghai Univ. (China)

Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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