Micro fiber-optic Fabry-Perot interferometer fabricated by chemical etching of Er-doped fiber

Yuan Gong; Yun-Jiang Rao; Yu Guo; Yu Wu; Zeng-Ling Ran

doi:10.1117/12.835338

5 October 2009 Micro fiber-optic Fabry-Perot interferometer fabricated by chemical etching of Er-doped fiber

Yuan Gong, Yun-Jiang Rao, Yu Guo, Yu Wu, Zeng-Ling Ran

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75033A (2009) https://doi.org/10.1117/12.835338
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

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.

Citation Download Citation

Yuan Gong, Yun-Jiang Rao, Yu Guo, Yu Wu, and Zeng-Ling Ran "Micro fiber-optic Fabry-Perot interferometer fabricated by chemical etching of Er-doped fiber", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75033A (5 October 2009); https://doi.org/10.1117/12.835338

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