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Proceedings Paper

Micro fiber-optic Fabry-Perot interferometer fabricated by chemical etching of Er-doped fiber
Author(s): Yuan Gong; Yun-Jiang Rao; Yu Guo; Yu Wu; Zeng-Ling Ran
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Paper Abstract

Micro extrinsic fiber-optic Fabry-Perot interferometers (MEFPI) are fabricated by chemically etching Er-doped fiber and then splicing the etched fiber to a single-mode fiber, for the first time to our knowledge. By using the mixture of Hydrochloric (HCl) acid and Hydrofluoric (HF) acid as etching solution, a cavity length of up to ~27 μm and a maximum fringe contrast of ~24dB are obtained. Experimental results show that the MEFPI is insensitive to temperature change but highly sensitive to strain, with temperature and strain sensitivities of ~0.65 pm/°C and 3.15 pm/ με, respectively. Such type of MEFPI sensors based on the etched Er-doped fiber is compact, cost-effective and especially suitable for mass production, offering great potential for a wide range of applications.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75033A (5 October 2009); doi: 10.1117/12.835338
Show Author Affiliations
Yuan Gong, Univ. of Electronic Science and Technology of China (China)
Yun-Jiang Rao, Univ. of Electronic Science and Technology of China (China)
Yu Guo, Univ. of Electronic Science and Technology of China (China)
Yu Wu, Univ. of Electronic Science and Technology of China (China)
Zeng-Ling Ran, Univ. of Electronic Science and Technology of China (China)


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

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