Hole-assisted dual-core fiber refractive index sensor based on LP01 and LP11 mode coupling

Yuan Jin; Jing Yang; Jinhui Shi; Zheng Zhu; Chunying Guan

doi:10.1117/12.3007774

24 November 2023 Hole-assisted dual-core fiber refractive index sensor based on LP₀₁ and LP₁₁ mode coupling

Yuan Jin, Jing Yang, Jinhui Shi, Zheng Zhu, Chunying Guan

Author Affiliations +

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129353J (2023) https://doi.org/10.1117/12.3007774
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

A refractive index (RI) sensor manufactured on a tapered hole-assisted dual-core fiber (HADCF) is proposed. The sensor is manufactured by tapered HADCF between two single-mode optical fibers, and works based on the coupling between the fundamental mode (LP₀₁) and the low-order mode (LP₁₁) in two cores. HADCF is tapered to achieve the phase matching condition between the LP₀₁ mode in the centric core and the LP₁₁ mode in the suspended core. The air hole in HADCF forms microfluidic channels for injecting glycerol solution, and can be free from external interference. The shift of the coupling peak is linear with the RI and sensitivity is 924.57 nm/RIU. In addition, the proposed RI sensor has negligible temperature crosstalk.

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

Citation Download Citation

Yuan Jin, Jing Yang, Jinhui Shi, Zheng Zhu, and Chunying Guan "Hole-assisted dual-core fiber refractive index sensor based on LP₀₁ and LP₁₁ mode coupling", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129353J (24 November 2023); https://doi.org/10.1117/12.3007774

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