Mach-Zehnder interferometer based on core-offset splicing technique for sensing applications

Shuai Gao; Chongke Ji; Qiuyi Ning; Weicheng Chen; Jianqing Li

doi:10.1117/12.2522899

14 February 2019 Mach-Zehnder interferometer based on core-offset splicing technique for sensing applications

Shuai Gao, Chongke Ji, Qiuyi Ning, Weicheng Chen, Jianqing Li

Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 1104824 (2019) https://doi.org/10.1117/12.2522899
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China

Abstract

A Mach-Zehnder interferometer (MZI) based on core-offset splicing technique for sensing applications is demonstrated. The interferometer is composed of a section of single-mode fiber sandwiched by two core-offset spliced standard optical fibers. The refractive index (RI) of the external media around the middle section of the MZI could be detected by investigating the peak wavelength of the MZI spectrum. Experimental results show that the proposed sensor exhibits a sensitivity to external refractive index of 17361 nm per refractive index unit and the temperature sensitivity of only 33 pm/°C. The present device has great potential in biochemical and medical sensing due to the advantages including easy fabrication, high sensitivity and excellent compactness.

Citation Download Citation

Shuai Gao, Chongke Ji, Qiuyi Ning, Weicheng Chen, and Jianqing Li "Mach-Zehnder interferometer based on core-offset splicing technique for sensing applications", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 1104824 (14 February 2019); https://doi.org/10.1117/12.2522899

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