High-sensitivity Mach-Zehnder interferometer for temperature and strain measurements based on an embedded microcavity

Zhao Zhang; Zhigang Cao; Tao Shui; Chenchen Yin; Hao Yin; Haiyu Tang; Benli Yu

doi:10.1117/12.2037731

20 December 2013 High-sensitivity Mach-Zehnder interferometer for temperature and strain measurements based on an embedded microcavity

Zhao Zhang, Zhigang Cao, Tao Shui, Chenchen Yin, Hao Yin, Haiyu Tang, Benli Yu

Author Affiliations +

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.

Citation Download Citation

Zhao Zhang, Zhigang Cao, Tao Shui, Chenchen Yin, Hao Yin, Haiyu Tang, and 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); https://doi.org/10.1117/12.2037731

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