Main > Chinese Optics Letters >  Volume 3 >  Issue 5 >  Page 05271 > Article
  • Abstract
  • Abstract
  • References (9)
  • Cited By (4)
  • Get PDF
  • Paper Information
  • Received: Jan. 6, 2005

    Accepted: --

    Posted: Jun. 6, 2006

    Published Online: Jun. 6, 2006

    The Author Email: Muping Song (songmp@zju.edu.cn)

    DOI:

  • Get Citation
  • Copy Citation Text

    Muping Song, Bin Zhao, Xianmin Zhang. Optical coherent detection Brillouin distributed optical fiber sensor based on orthogonal polarization diversity reception[J]. Chinese Optics Letters, 2005, 3(5): 05271

    Download Citation

  • !Citations Alert
  • Category
  • Instrumentation, measurement, and metrology
  • Share
Chinese Optics Letters, Vol. 3, Issue 5, 05271 (2005)

Optical coherent detection Brillouin distributed optical fiber sensor based on orthogonal polarization diversity reception

Muping Song*, Bin Zhao, and Xianmin Zhang

Author Affiliations

  • Department of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027

Abstract

In Brillouin distributed optical fiber sensor, using optical coherent detection to detect Brillouin scattering optical signal is a good method, but there exists the polarization correlated detection problem. A novel detecting scheme is presented and demonstrated experimentally, which adopts orthogonal polarization diversity reception to resolve the polarization correlated detection problem. A laser is used as pump and reference light sources, a microwave electric-optical modulator (EOM) is adopted to produce frequency shift reference light, a polarization controller is used to control the polarization of the reference light which is changed into two orthogonal polarization for two adjacent acquisition periods. The Brillouin scattering light is coherently detected with the reference light, and the Brillouin scattering optical signal is taken out based on Brillouin frequency shift. After electronic processing, better Brillouin distributed sensing signal is obtained. A 25-km Brillouin distributed optical fiber sensor is achieved.

keywords

Please Enter Your Email: