Enhancement of a refractive index sensitivity by bending an inline fiber Mach-Zehnder interferometer with a core-offset and a peanut-shape

Yanfei Zhou; Yuan Liu; Jie Zheng

doi:10.1117/12.2686965

27 November 2023 Enhancement of a refractive index sensitivity by bending an inline fiber Mach-Zehnder interferometer with a core-offset and a peanut-shape

Yanfei Zhou, Yuan Liu, Jie Zheng

Author Affiliations +

Proceedings Volume 12771, Advanced Sensor Systems and Applications XIII; 127710Y (2023) https://doi.org/10.1117/12.2686965
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

An inline fiber Mach-Zehnder interferometer (MZI) that consisted of a standard single-mode fiber sandwiched between a core-offset and a peanut-shape joints is fabricated for refractive Index (RI) sensing purpose. It is found that the straight inline MZI was not sensitive enough with -27.6 nm/RIU for RI measurement. After bending it, the sensitivity was improved markedly, and the maximum RI sensitivity of -153.11 nm/RIU was achieved within the measured RI range of 1.333–1.373. The result showed that bending the inline MZI could enhance its RI sensing performance, and as the curvature radius deceased, the RI sensitivity increased.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yanfei Zhou, Yuan Liu, and Jie Zheng "Enhancement of a refractive index sensitivity by bending an inline fiber Mach-Zehnder interferometer with a core-offset and a peanut-shape", Proc. SPIE 12771, Advanced Sensor Systems and Applications XIII, 127710Y (27 November 2023); https://doi.org/10.1117/12.2686965

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