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Mach-Zehnder interferometer based on core-offset splicing technique for sensing applications
Author(s): Shuai Gao; Chongke Ji; Qiuyi Ning; Weicheng Chen; Jianqing Li
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Paper 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.

Paper Details

Date Published: 14 February 2019
PDF: 5 pages
Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 1104824 (14 February 2019); doi: 10.1117/12.2522899
Show Author Affiliations
Shuai Gao, Foshan Univ. (China)
Macau Univ. of Science and Technology (Macao, China)
Chongke Ji, Foshan Univ. (China)
Qiuyi Ning, Foshan Univ. (China)
Weicheng Chen, Foshan Univ. (China)
Jianqing Li, Macau Univ. of Science and Technology (Macao, China)


Published in SPIE Proceedings Vol. 11048:
17th International Conference on Optical Communications and Networks (ICOCN2018)
Zhaohui Li, Editor(s)

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