Simultaneous measurements of refractive index and temperature  based on Mach-Zehnder interferometer with sphere-trapezoid structure

Weihua Zhang; Wenlin Gao; Zhengrong Tong; Yimei Zhong; Juan Qin

doi:10.1117/12.2522917

14 February 2019 Simultaneous measurements of refractive index and temperature based on Mach-Zehnder interferometer with sphere-trapezoid structure

Weihua Zhang, Wenlin Gao, Zhengrong Tong, Yimei Zhong, Juan Qin

Author Affiliations +

Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 110484N (2019) https://doi.org/10.1117/12.2522917
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China

Abstract

A new Mach-Zehnder interferometer sensor , which can simultaneously gauge refractive index (RI) and temperature, is realized. A sphere-trapezoid structure used as a coupler is formed by splicing sphere and trapezoid cone. The extinction ratio of the transmission spectra can achieve 10dB. The RI sensitivities of the two interference valleys are -51.2nm/RIU and -36.5nm/RIU. The temperature sensitivities of them are 0.063nm/°C and 0.064nm/°C. Therefore it can be realized to gauge the RI and the temperature simultaneously. The proposed sensor can also be applied to chemistry and biology, it has broad application prospects.

Citation Download Citation

Weihua Zhang, Wenlin Gao, Zhengrong Tong, Yimei Zhong, and Juan Qin "Simultaneous measurements of refractive index and temperature based on Mach-Zehnder interferometer with sphere-trapezoid structure ", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110484N (14 February 2019); https://doi.org/10.1117/12.2522917

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KEYWORDS

Sensors

Refractive index

Temperature metrology

Fusion splicing

Mach-Zehnder interferometers

Single mode fibers

Cladding

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