Brillouin frenquency shift sensing system with double fibers coherent heterodyne detection

CHEN Fang; WAN Sheng-peng

doi:10.13873/j.1000-97872006.07.006

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Brillouin frenquency shift sensing system with double fibers coherent heterodyne detection

更新时间：2025-09-11

- Brillouin frenquency shift sensing system with double fibers coherent heterodyne detection
- Issue 7, Pages: 18-20+23(2006)
- 作者机构：
  
  1. 南昌航空工业学院测试技术与控制工程系
  2. 南昌航空工业学院测试技术与控制工程系,江西,南昌,330063
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872006.07.006
  CLC： TP212
- Published：2006
- 稿件说明：
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[1]陈方,万生鹏.双光纤相干外差检测布里渊频移的传感系统[J].传感器与微系统,2006(07):18-20+23.

CHEN Fang, WAN Sheng-peng. Brillouin frenquency shift sensing system with double fibers coherent heterodyne detection[J]. 2006, (7): 18-20+23.
[1]陈方,万生鹏.双光纤相干外差检测布里渊频移的传感系统[J].传感器与微系统,2006(07):18-20+23. DOI： 10.13873/j.1000-97872006.07.006.

CHEN Fang, WAN Sheng-peng. Brillouin frenquency shift sensing system with double fibers coherent heterodyne detection[J]. 2006, (7): 18-20+23. DOI： 10.13873/j.1000-97872006.07.006.

摘要

提出了一种测量布里渊频移的全新简便方案。从2根传感光纤反射回来的光经光电探测器外差接收

通过分析传感信号和参考信号的相对关系进行布里渊频移的测量。通过理论分析和实验结果可以看出:双光纤的引入省略了光的移频调制环节

简化了光路和滤波

降低了对光源的稳频要求

提高了系统的信噪比

增强了系统在实际应用中的可行性。

Abstract

A novel scheme to measure the Brillouin frequency shift is proposed.Brillouin frequency shift signal is obtained by analyzing the relative relationship of sensing signal and reference signal.Theoretical analysis and experiment show ordinary coherent self-heterodyne scheme is simplified by using double sensing fibers;light modulation became unnecessary;demand of frequency stabilization is reduced;the SNR is improved in this system.This scheme is more feasible in practice.

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references

一种基于荧光猝灭原理的光纤氧气传感器 [J]. 姜德生,赵士威,韩蕴,越方禹,黄俊. 光学学报 . 2003(03)

用于海洋井下温度检测的反射式光纤传感器及补偿技术 [J]. 赵勇,荣民,廖延彪. 中国激光 . 2003(01)

分布式光纤布里渊散射应变传感器参数计算 [J]. 黄民双,曾励,陶宝祺,黄尚廉. 航空学报 . 1999(02)

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