Fiber Bragg grating sensing multiplexing based on LP01 and LP11 spatial mode diversity

Tianle Gu; Feng Liu; Zicheng Huang; Zhiliang Zhu

doi:10.1117/12.3032286

10 October 2024 Fiber Bragg grating sensing multiplexing based on LP₀₁ and LP₁₁ spatial mode diversity

Tianle Gu, Feng Liu, Zicheng Huang, Zhiliang Zhu

Proceedings Volume 13278, Seventh Global Intelligent Industry Conference (GIIC 2024); 132781B (2024) https://doi.org/10.1117/12.3032286
Event: Seventh Global Intelligent Industry Conference (GIIC 2024), 2024, Shenzhen, China

Abstract

In this paper, we propose a fiber Bragg grating (FBG) multiplexing method based on mode diversity, which achieves FBG multiplexed sensing by utilizing spatial mode dimensionality. The mode diversity FBG multiplexing system based on few mode fiber (FMF) circulator and photonic lantern is constructed, and the LP₀₁ and LP₁₁ temperature sensing multiplexing are experimentally verified. The results show that the proposed technique is capable of achieving multichannel high-resolution temperature measurements, with temperature resolutions better than 0.5 °C for both LP₀₁ and LP₁₁ spatial modes, and detection sensitivities of 15.8 pm/ °C and 16.2 pm/ °C, respectively.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tianle Gu, Feng Liu, Zicheng Huang, and Zhiliang Zhu "Fiber Bragg grating sensing multiplexing based on LP₀₁ and LP₁₁ spatial mode diversity", Proc. SPIE 13278, Seventh Global Intelligent Industry Conference (GIIC 2024), 132781B (10 October 2024); https://doi.org/10.1117/12.3032286

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KEYWORDS

Fiber Bragg gratings

Multiplexing

Temperature metrology

Fiber optics sensors

Sensing systems

Reflection

Control systems

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