中国物理B ›› 2012, Vol. 21 ›› Issue (3): 34212-034212.doi: 10.1088/1674-1056/21/3/034212

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

陈伟,孟洲,周会娟,罗洪   

  • 收稿日期:2011-09-01 修回日期:2011-09-13 出版日期:2012-02-15 发布日期:2012-02-15
  • 通讯作者: 孟洲,zhoumeng6806@163.com E-mail:zhoumeng6806@163.com

Stimulated Brillouin scattering-induced phase noise in an interferometric fiber sensing system

Chen Wei(陈伟), Meng Zhou(孟洲), Zhou Hui-Juan(周会娟), and Luo Hong(罗洪)   

  1. Department of Optic Information Science and Technology, College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2011-09-01 Revised:2011-09-13 Online:2012-02-15 Published:2012-02-15
  • Contact: Meng Zhou,zhoumeng6806@163.com E-mail:zhoumeng6806@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61177073), the Open Fund of Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Jinan University, China (Grant No. gdol201101), the Fund of Innovation of Graduate School of NUDT, China (Grant No. B110703), and Hunan Provincial Innovation Foundation for Postgraduate, China (Grant No. CX2011B033).

Abstract: Stimulated Brillouin scattering-induced phase noise is harmful to interferometric fiber sensing systems. The localized fluctuating model is used to study the intensity noise caused by the stimulated Brillouin scattering in a single-mode fiber. The phase noise structure is analyzed for an interferometric fiber sensing system, and an unbalanced Michelson interferometer with an optical path difference of 1 m, as well as the phase-generated carrier technique, is used to measure the phase noise. It is found that the phase noise is small when the input power is below the stimulated Brillouin scattering threshold, increases dramatically at first and then gradually becomes flat when the input power is above the threshold, which is similar to the variation in relative intensity noise. It can be inferred that the increase in phase noise is mainly due to the broadening of the laser linewidth caused by stimulated Brillouin scattering, which is verified through linewidth measurements in the absence and presence of the stimulated Brillouin scattering.

Key words: stimulated Brillouin scattering, phase noise, interferometric fiber sensing, intensity noise

中图分类号:  (Stimulated Brillouin and Rayleigh scattering)

  • 42.65.Es
78.35.+c (Brillouin and Rayleigh scattering; other light scattering)