光通信技术2024，Vol.48Issue(1)：18-22,5.DOI:10.13921/j.cnki.issn1002-5561.2024.01.004
基于SOA光纤环形激光器的分布式声传感系统
Distributed acoustic sensing system based on SOA fiber ring laser
杨苏凡 1张春熹 1王夏霄1
作者信息
- 1. 北京航空航天大学仪器科学与光电工程学院,北京 100191
- 折叠
摘要
Abstract
In order to reduce the complexity of the traditional distributed acoustic sensor(DAS)system and improve the sig-nal-to-noise ratio(SNR),a DAS system based on a fiber ring laser(SOA-FRL)based on a semiconductor optical amplifier is pro-posed.This system uses SOA-FRL to replace the narrow linewidth laser and pulse modulator in the traditional DAS system,and realizes the highly stable optical pulse output.The double pulse heterodyne detection method is used to achieve accurate sound signal detection and sound source location.The experimental results show that the demodulation SNR of the proposed system is as high as 38.25 dB and the spatial resolution is 12 m under the action of the acoustic signal with frequency of 1 kHz and ampli-tude of 1.14 rad.关键词
分布式声传感/半导体光放大器/光纤环形激光器/外差探测/光纤传感Key words
distributed acoustic sensing/semiconductor optical amplifier/fiber ring laser/heterodyne detection/fiber optic sensing分类
信息技术与安全科学引用本文复制引用
杨苏凡,张春熹,王夏霄..基于SOA光纤环形激光器的分布式声传感系统[J].光通信技术,2024,48(1):18-22,5.
