期刊文献+

光纤光栅与受激布里渊信号的耦合特性 预览 被引量:4

Coupling characteristics between fiber grating and stimulated Brillouin signal
在线阅读 下载PDF
收藏 分享 导出
摘要 近年来,光纤布拉格光栅传感器与全分布式光纤传感器的融合技术受到了广泛关注,然而光纤布拉格光栅与布里渊信号之间的耦合特性鲜有报道。本文研究了光栅类型、波长、反射率及光纤的光致折射率对受激布里渊信号的影响规律,并探讨了空间分辨率对光纤布拉格光栅定位功能的影响。实验结果表明,在布里渊光时域分析系统中,光纤布拉格光栅处有尖锐的反射峰,而啁啾光栅、长周期光栅及光致折射率变化的光纤处均未出现尖锐的反射峰;光纤布拉格光栅反射率与受激布里渊散射功率谱无关;当光纤布拉格光栅的波长接近1 550 nm时,对受激布里渊频移测量的影响最大;在8 m的长度范围内,光纤布拉格光栅的定位误差约为4 cm,并且与空间分辨率无关。 Recently,the integration technique of fiber Bragg grating( FBG) sensors and distributed optical fiber sensors has attracted extensive attention. However,it is unknown about coupling properties between FBG and Brillouin signal. In this paper,we investigate the effects of optical grating types,wavelength and reflectivity and exposure-induced refractive index of optical fiber on stimulated Brillouin signal. Meanwhile,the influence of spatial resolution on positioning of FBG is discussed. Experimental results show that the sharp reflected peak from FBG occurs in the hybrid system of FBG sensor and Brillouin optical time-domain analysis( BOTDA),while no reflected peak occurs for chirped grating and long period grating,as well as exposure-inducedrefractive index of optical fibers. FBG reflectivity has no connection with power spectrum of simulated Brillouin scattering. It is also shown that when the wavelength of FBG is close to 1 550 nm,the influence on stimulated Brillouin signal is the largest. A positioning error of approximate 4 cm is obtained among a sensing range of8 m,which is independent on the spatial resolution.
作者 孙宝臣 侯跃敏 李峰 李剑芝 SUN Bao-chen1,2, HOU Yue-min1 , LI Feng1 , LI Jian-zhi1,2 ( 1. Research Institute of Structural Health Monitoring and Control, Shijiazhuang Tiedao University, Shijiazhuang 050043, China ; 2. Technology Research Center of Engineering Vibration Isolation and Equipment in Hebei Province, Hengshui 053000, China)
出处 《中国光学》 CAS CSCD 2017年第4期484-490,共7页 Chinese Optics and Applied Optics Abstracts
基金 国家自然科学基金项目(No.51508349) 河北省自然科学基金项目(No.E2015210094) 河北省高等学校科学技术研究青年基金项目(No.QN2016080)
关键词 光纤布拉格光栅 受激布里渊信号 耦合规律 反射谱 fiber Bragg grating(FBG) stimulated Brillouin signal coupling rule reflection spectrum
  • 相关文献

参考文献4

二级参考文献133

共引文献92

同被引文献37

引证文献4

投稿分析
职称考试

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈