Absolute strain measurement based on a microfiber Mach-Zehnder interferometer

Sung-Jae Kim; Min-Seok Yoon; Sunduck Kim; Oh-Jang Kwon; Young-Geun Han

doi:10.1117/12.2058780

2 June 2014 Absolute strain measurement based on a microfiber Mach-Zehnder interferometer

Sung-Jae Kim, Min-Seok Yoon, Sunduck Kim, Oh-Jang Kwon, Young-Geun Han

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91577K (2014) https://doi.org/10.1117/12.2058780
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A microfiber-based Mach-Zehnder interferometer (MZI) for measurement of absolute strain is proposed and demonstrated experimentally. The diameter of the microfiber is optimized to induce the negative thermo-optic effect in the microfiber MZI and the temperature sensitivity of the microfiber MZI is successfully suppressed. When the diameter of the microfiber is ~5 μm, the temperature sensitivity of the microfiber-MZI is dramatically mitigated. We apply the proposed microfiber MZI for absolute strain measurement and its strain sensitivity is measured to be ~7.13×10-2 nm/ μЄ.

Citation Download Citation

Sung-Jae Kim, Min-Seok Yoon, Sunduck Kim, Oh-Jang Kwon, and Young-Geun Han "Absolute strain measurement based on a microfiber Mach-Zehnder interferometer", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91577K (2 June 2014); https://doi.org/10.1117/12.2058780

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