Distributed optical fiber sensing system based on a semiconductor optical amplifier ring cavity structure

Guoqing Liu; Nian Fang

doi:10.1117/12.3048403

5 December 2024 Distributed optical fiber sensing system based on a semiconductor optical amplifier ring cavity structure

Guoqing Liu, Nian Fang

Author Affiliations +

Proceedings Volume 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024); 134181G (2024) https://doi.org/10.1117/12.3048403
Event: 15th International Conference on Information Optics and Photonics (CIOP2024), 2024, Xi’an, China

Abstract

This paper proposes a simple Distributed Optical Fiber Sensing (DOFS) system based on a Semiconductor Optical Amplifier (SOA) ring cavity structure to reduce the complexity and cost of DOFS systems. A broadband light source provides external optical injection for the SOA ring cavity to suppress the oscillation signal from the cavity so that the working state of the sensing system is stable. With the help of the ring cavity, the SOA can convert the phase changes caused by an external disturbance to intensity fluctuations. The position of the external disturbance can be determined by using the time difference between the waveform changes. The location performance of the system is investigated experimentally. The effective length of the sensing fiber is 930 m. The mean absolute errors of location results of different positions are less than 4 m. The experimental results show that the proposed system can work stably, is simple in location method, high in real-time performance, and accurate in location results.

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

Citation Download Citation

Guoqing Liu and Nian Fang "Distributed optical fiber sensing system based on a semiconductor optical amplifier ring cavity structure", Proc. SPIE 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024), 134181G (5 December 2024); https://doi.org/10.1117/12.3048403

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