Backward Brillouin three-parameter sensing simulation based on multicore optical fibers Article Swipe

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Donghe Sheng , Yunlong Chang , Zhe Han , Yuanyuan Liu , Huiping Tian ·

YOU? · · 2025 · Open Access · · DOI: https://doi.org/10.1364/oe.568157

Conventional distributed Brillouin optical fiber sensors, whether theoretically modeled or experimentally implemented, provide simultaneous access to only two physical parameters at most, typically limited to either curvature or temperature-strain. Here, we theoretically study a three-parameter sensor based on backward Brillouin scattering and develop a sensing error assessment model in a multicore fiber (MCF) configuration with one inner core, three outer cores, and a two-step refractive index profile. This sensor enables discriminative recognition of temperature, strain and curvature parameters through combining the spatial division multiplexing (SDM) with acoustic-mode division multiplexing (AMDM) in both inner and outer cores. We establish a 3D matrix for error-quantified tri-parameter recovering. The maximum errors of temperature, strain, and curvature radius, in theory, are 1.7410°C, 44.3315 µε, and 2.4727 × 10 −3 m, respectively. This theoretical work potentially offers a crucial reference for Brillouin distributed sensing from traditional dual-parameter to next-generation three-parameter sensing systems.

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Optics Brillouin scattering Optical fiber Brillouin zone Materials science Multi-core processor Computer science Physics Operating system

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Type: article
Language: en
Landing Page: https://doi.org/10.1364/oe.568157
OA Status: gold
References: 55
Related Works: 10
OpenAlex ID: https://openalex.org/W4411374598

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DOI: https://doi.org/10.1364/oe.568157

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Title: Backward Brillouin three-parameter sensing simulation based on multicore optical fibers

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Language: en

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Publication year: 2025

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Publication date: 2025-06-17

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Authors: Donghe Sheng, Yunlong Chang, Zhe Han, Yuanyuan Liu, Huiping Tian

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Landing page: https://doi.org/10.1364/oe.568157

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Concepts: Optics, Brillouin scattering, Optical fiber, Brillouin zone, Materials science, Multi-core processor, Computer science, Physics, Operating system

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Cited by: 0

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sustainable_development_goals[0].id	https://metadata.un.org/sdg/7
sustainable_development_goals[0].score	0.47999998927116394
sustainable_development_goals[0].display_name	Affordable and clean energy
citation_normalized_percentile.value	0.23297006
citation_normalized_percentile.is_in_top_1_percent	False
citation_normalized_percentile.is_in_top_10_percent	False