Temperature Dependence of the Brillouin Frequency Shift (BFS) using Independent Real Spectral Analysis in DCS-BOTDR Fiber Sensor
DOI:
https://doi.org/10.53655/joe.z2570oKeywords:
Distributed fiber sensor, Brillouin optical time domain reflectometry, fast Fourier transformAbstract
We propose an independent real spectral analysis method to improve the Brillouin frequency shift (BFS) resolution using the differential cross-spectrum technique (DCS-BOTDR). The proposed method only considers the real components to extract BGS. For a 1.2 km test fiber length, we have achieved 0.4 m spatial resolution, 1.98 MHz Brillouin frequency accuracy, and 1.025 MHz/°C temperature sensitivity using the proposed method.
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Copyright (c) 2025 Ain Nabihah Mohammad Rihan, Intan Sasila Ghadzali, Saiful Dzulkefly Zan, Yosuke Tanaka, Norhana Arsad
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