Influence of core diameter and length of polymer optical fiber on Brillouin scattering properties

Yosuke Mizuno, Takaaki Ishigure, Kentaro Nakamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Brillouin scattering in perfluorinated graded-index polymer optical fibers (PFGI-POFs) is potentially useful in developing high-accuracy distributed temperature sensors with reduced strain sensitivity. In this study, we investigate, both experimentally and theoretically, the influence of the fiber core diameter and length on the Brillouin gain spectra (BGS) in PFGI-POFs. First, we show that smaller core diameter drastically enhances the Stokes power using PFGI-POFs with 62.5-μm and 120-μm core diameters, and discuss the Brillouin threshold power. Then, we demonstrate that the PFGI-POF length has little influence on the BGS when the length is longer than 50 m. We also predict that, at 1.55-μm wavelength, it is difficult to reduce the Brillouin threshold power of PFGI-POFs below that of long silica single-mode fibers even if their core diameter is sufficiently reduced to satisfy the single-mode condition. Finally, making use of the enhanced Stokes signal, we confirm the Brillouin linewidth narrowing effect.

Original languageEnglish
Title of host publicationThird Asia Pacific Optical Sensors Conference
Publication statusPublished - 2012 Feb 20
Event3rd Asia Pacific Optical Sensors Conference - Sydney, NSW, Australia
Duration: 2012 Jan 312012 Feb 3

Publication series

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


Other3rd Asia Pacific Optical Sensors Conference
CitySydney, NSW


  • Brillouin gain spectrum
  • Brillouin scattering
  • distributed optical fiber sensors
  • polymer (plastic) optical fiber

ASJC Scopus subject areas

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


Dive into the research topics of 'Influence of core diameter and length of polymer optical fiber on Brillouin scattering properties'. Together they form a unique fingerprint.

Cite this