Al-doped optical fiber to enhance strain sensitivity of Brillouin based optical fiber sensors

Y. Sikali Mamdem, Frédéric Taillade, Yves Jaouën, Renaud Gabet, Gautier Moreau, Alexey V. Faustov, G. Pilorget, Sylvie Delépine-Lesoille

Research outputpeer-review

1 Scopus citations


In order to meet application requirements, dependence of the Brillouin frequency shift to strain should be enhanced. We evaluated the influence of several optical fiber dopants on Brillouin scattering strain sensitivity. Based on a FEM-2D modeling, we developed a model for Brillouin gain spectrum and its strain sensitivity. Geometrical profile, doping composition and drawing conditions are taken into account. We show alumina is a very interesting dopant to enhance strain sensitivity in optical fibers. This result is experimentally validated: up to 0.0639MHz/με is obtained with a 5.2mol% Al 2O3 doped fiber. We expect to reach 0.1MHz/με with 25mol% doping level.

Original languageEnglish
Title of host publication23rd International Conference on Optical Fibre Sensors
PublisherSPIE - Society of Photo-optical Instrumentation Engineers
ISBN (Print)9781628411751
StatePublished - 2014
Externally publishedYes
Event23rd International Conference on Optical Fibre Sensors - Santander
Duration: 2 Jun 20146 Jun 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Conference23rd International Conference on Optical Fibre Sensors

ASJC Scopus subject areas

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

Cite this