23 April 2017 An in-fiber Mach-Zehnder interferometer based on dual side-hole fiber for highly sensitive measurement of curvature
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103236V (2017) https://doi.org/10.1117/12.2264078
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
An in-fiber Mach-Zehnder interferometer (MZI) based on dual side-hole fiber (DSHF) was demonstrated for highly sensitive measurement of curvature. The MZI-based bending sensor is fabricated by fusion splicing a piece of DSHF in between two standard single mode fibers (SMF) with cladding alignment. Due to the existence of the two air holes and the asymmetrical cross-section of the DSHF, the DSHF-based MZI is a core-cladding interferometer which is sensitive to directional bending. The bending characteristics are investigated experimentally within the curvature range of 0-8.172m-1. The bending sensitivities of the sensor are respectively 1.464 nm/m-1 and -1.394 nm/m-1 at their two opposite bending directions.
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Xiaowei Ouyang, Huiyong Guo, Zhou Zheng, Liyun Ding, Ai Zhou, "An in-fiber Mach-Zehnder interferometer based on dual side-hole fiber for highly sensitive measurement of curvature", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236V (23 April 2017); doi: 10.1117/12.2264078; https://doi.org/10.1117/12.2264078
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