J4 ›› 2015, Vol. 32 ›› Issue (3): 352-357.

• 非线性光学 • 上一篇    下一篇

基于脉冲光的布里渊散射阈值分析

纪正飚   

  1. 盐城工学院信息工程学院,江苏 盐城 224051
  • 收稿日期:2014-07-11 修回日期:2014-09-06 出版日期:2015-05-28 发布日期:2015-05-28
  • 通讯作者: 级正飚 (1982-)硕士,讲师,江苏盐城人,主要从事光电子技术及工业过程控制技术的研究. E-mail:zhengbiaoj@126.com
  • 基金资助:

    盐城工学院人才引进(KJC2012028)、江苏省高校自然科学研究项目资助(14KJB510034)

Analysis of Brillouin Threshold Based on Pulsed Light

Ji Zhenbiao   

  1. School of Information Technology, Yancheng Institute of Technology,Yancheng 224051,China
  • Received:2014-07-11 Revised:2014-09-06 Published:2015-05-28 Online:2015-05-28

摘要:

针对连续分布式布里渊光纤传感器的传感特性与阈值问题,根据光纤中泵浦光与斯托克斯光之间耦合波方程,推导出布里渊散射阈值的关系式,通过计算分析该关系式与入射光的脉冲宽度、光纤半径和温度的关系,提出了基于脉冲光布里渊散射的阈值理论估算模型。在实验中,利用布里渊光时域反射仪系统,得出了脉冲光布里渊阈值特性,并与理论模型的结果进行对比分析,实验证明了该脉冲光阈值模型的结果与实验得到的布里渊阈值能够较好的吻合。

关键词: 布里渊散射阈值, 光纤传感, 时域反射仪, 脉冲光

Abstract:

Arming at the problem of Brillouin scattering threshold and sensing characteristics for the distributed optical fiber sensor based on Brillouin scattering, the calculated expression of the Brillouin threshold is received through the coupled equation between the pump and stokes wave in optical fiber, through calculation and analysis the relationship between pulse width, fiber radius and temperature of the relationship with the incident light, theoretical estimation model of Brillouin threshold for pulsed light is proposed for estimating the model theory of optical pulse threshold based on Brillouin scattering. In the experiment, receive the power relationship between the incidents light and scattered light using of Brillouin optical time domain reflectometer system, by comparing the threshold power under the various definitions, the experimental results consistent with the theoretical calculations.

Key words: Brillouin Scattering Threshold, Fiber Sensor, Optical Time Domain Reflectometer, Pulsed Light