Suppression of polarization sensitivity in BOTDA fiber distributed sensing system

Yang Jing, Changyuan Yu, Chen Zhihao, Ng Junhong, Yang Xiufeng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

8 Citations (Scopus)


We propose and demonstrate a novel method to suppress the polarization induced signal fluctuation in Brillouin Optical Time Domain Analysis (BOTDA) fiber distributed sensing system. The polarization diversity scheme contains two polarization beam splitters (PBSs) and a piece of single mode fiber (SMF). The pulsed pump wave is split into two beams with orthogonal polarization states and one of the beams is delayed by a time related to the pulse width. Then, the two beams are recombined. Theoretically, the Degree-of-Polarization (DOP) of the recombined wave is zero and the distributed sensing system is insensitive to the polarization state of the probe. Stable distributed temperature measurement is demonstrated along a 1.2 km SMF.
Original languageEnglish
Title of host publication19th International Conference on Optical Fibre Sensors
Publication statusPublished - 26 Jun 2008
Externally publishedYes
Event19th International Conference on Optical Fibre Sensors - Perth, WA, Australia
Duration: 15 Apr 200818 Apr 2008


Conference19th International Conference on Optical Fibre Sensors
CityPerth, WA


  • Brillouin scattering
  • Distributed fiber sensor
  • Polarization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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