Brillouin optical correlation domain analysis with over 2.5 million resolution points based on Raman amplification and injection locking

Wookjin Jeong, Gyu Tae Kim, Kwang Yong Song, Sang Bae Lee, Kwanil Lee

Research output: Contribution to journalArticlepeer-review

Abstract

We propose and experimentally demonstrate a long-range Brillouin optical correlation domain analysis (BOCDA) system based on distributed Raman amplification and injection-locking to reach over 2.6 million resolving points. The optimization of key parameters in the Raman amplification, time domain data processing, differential measurement scheme, and injection-locking are applied to achieve a spatial resolution of 2 cm over a 50 km sensing fiber. Our result corresponds to at least twice improvement compared to former records, and the best one among distributed Brillouin sensors in terms of the number of resolving points.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of Lightwave Technology
DOIs
Publication statusAccepted/In press - 2022

Keywords

  • Brillouin optical correlation domain analysis (BOCDA)
  • Distributed fiber optic sensor
  • Modulation
  • Optical fiber sensors
  • Raman amplification
  • Scattering
  • Sensors
  • Spatial resolution
  • Stimulated Brillouin scattering (SBS)
  • Stimulated emission
  • Time-domain analysis

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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