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5 October 2009 In-fiber Michelson interferometer based on double-cladding fiber for refractive index sensing
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Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75036Y (2009) https://doi.org/10.1117/12.834097
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom
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.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fufei Pang, Huanhuan Liu, Na Chen, Yunqi Liu, Xianglong Zeng, Zhenyi Chen, and Tingyun Wang "In-fiber Michelson interferometer based on double-cladding fiber for refractive index sensing", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75036Y (5 October 2009); https://doi.org/10.1117/12.834097
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