20 December 2013 High-sensitivity Mach-Zehnder interferometer for temperature and strain measurements based on an embedded microcavity
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Proceedings Volume 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 90441E (2013) https://doi.org/10.1117/12.2037731
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China
Abstract
A novel all-fiber Mach-Zehnder modal interferometer (MZMI) for temperature and strain measurements is demonstrated. The interference between the core and the cladding modes in the single mode fiber (SMF) is utilized. To excite the cladding modes, a microcavity is embedded in the SMF. After propagating a distance in the cladding, the cladding modes will couple back to the core mode at the other point fabricated by core-offset splicing. The MZMI exhibits a high temperature sensitivity (<0.1nm/ °C) in the range of 200-600 (°C). The strain response of the MZMI is also investigated. This compact, simple and cost-effective MZMI owns potential applications in temperature and strain measurements.
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Zhao Zhang, Zhao Zhang, Zhigang Cao, Zhigang Cao, Tao Shui, Tao Shui, Chenchen Yin, Chenchen Yin, Hao Yin, Hao Yin, Haiyu Tang, Haiyu Tang, Benli Yu, Benli Yu, } "High-sensitivity Mach-Zehnder interferometer for temperature and strain measurements based on an embedded microcavity", Proc. SPIE 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 90441E (20 December 2013); doi: 10.1117/12.2037731; https://doi.org/10.1117/12.2037731
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