Measurement sensitivity dependencies on incident power and spatial resolution in slope-assisted Brillouin optical correlation-domain reflectometry

Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

To enable high-speed distributed strain and temperature measurements, we have recently developed a new configuration of Brillouin optical correlation-domain reflectometry (BOCDR), called slope-assisted (SA-) BOCDR, which exploits the slope power of the Brillouin gain spectrum. Although its fundamental operations have been already clarified, a detailed study on the measurement sensitivity has not been performed yet. Here, we investigate the influences of the incident power and the spatial resolution on the measurement sensitivity of SA-BOCDR. The sensitivity is found to be improved with increasing incident power and/or lowering spatial resolution, which is verified through distributed temperature measurements.

Original languageEnglish
Pages (from-to)68-71
Number of pages4
JournalSensors and Actuators, A: Physical
Volume268
DOIs
Publication statusPublished - 2017 Dec 1
Externally publishedYes

Keywords

  • Brillouin scattering
  • Distributed measurement
  • Modulation
  • Optical fiber sensors
  • Sensitivity
  • Strain and temperature sensing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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