Sweep-free Brillouin time-domain analysis (SF-BOTDA) with improved spatial resolution

Asher Voskoboinik*, Alan E. Willner, Moshe Tur

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Sweep-free Brillouin optical time domain analysis (SF-BOTDA), which uses multi pump and probe tones for a much faster determination of the Brillouin frequency shift, has suffered from a trade-off between the required spatial resolution and the inter-tone frequency spacing. A new implementation of the technique, involving a novel sequencing of the probe signal with respect to the pump multi-tone pulse, together with advanced post-processing, removes this trade-off, allowing the method to achieve spatial resolutions comparable to those of classical BOTDA without sacrificing tone granularity. A spatial resolution of 2m is experimentally demonstrated.

Original languageEnglish
Title of host publication22nd International Conference on Optical Fiber Sensors
DOIs
StatePublished - 2012
Event22nd International Conference on Optical Fiber Sensors - Beijing, China
Duration: 15 Oct 201219 Oct 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8421
ISSN (Print)0277-786X

Conference

Conference22nd International Conference on Optical Fiber Sensors
Country/TerritoryChina
CityBeijing
Period15/10/1219/10/12

Keywords

  • Brillouin sensors
  • Optical fiber sensors
  • Stimulated Brillouin scattering

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