Open AccessThreshold for stimulated Brillouin scattering in optical fiber
Author(s) -
V. F. Kovalev,
Robert G. Harrison
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.017625
Subject(s) - brillouin scattering , optics , materials science , optical fiber , fiber , double clad fiber , photonic crystal fiber , numerical aperture , dispersion shifted fiber , polarization maintaining optical fiber , graded index fiber , wavelength , scattering , fiber optic sensor , physics , composite material
We show that in optical fiber the threshold exponential gain, Gth, for stimulated Brillouin scattering initiated by spontaneous Brillouin scattering is functionally and strongly dependent on the material, length and numerical aperture of the fiber and the pump wavelength. For silica fiber we show that the value of G(th) at lambda congruent with 1 microm ranges from as low as approximately 5 in long fiber ( > or =few kms) to ~10-12 in fibers of approximately 100 m length and approximately 20-23 for very short fibers (<10 cm).