Title :
Sound velocity measurement based on guided acoustic-wave Brillouin scattering
Author :
Shiraki, Kazuyuki ; Ohashi, Masaharu
Author_Institution :
NTT Telecommun. Field Syst. R&D Center, Ibaraki, Japan
Abstract :
The guided acoustic-wave Brillouin scattering (GAWBS) technique is applied to acoustic velocity estimation for single-mode fibers. The GAWBS measurement can be carried out with a simple experimental setup. This technique is used to measure the fluorine (F) concentration dependence of the shear wave velocity. As a result, it is clarified that the sound velocity of the shear wave decreases as F concentration increases. Moreover, the shear wave velocities obtained with this method are in good agreement with the values obtained for bulk glass by elastic property measurements.<>
Keywords :
acoustic wave scattering; acoustic wave velocity measurement; acousto-optical effects; optical fibres; stimulated Brillouin scattering; GAWBS measurement; acoustic velocity estimation; elastic property measurements; guided acoustic-wave Brillouin scattering; shear wave velocity; single-mode fibers; Acoustic scattering; Acoustic waves; Brillouin scattering; Eigenvalues and eigenfunctions; Frequency; Light scattering; Optical fibers; Optical scattering; Particle scattering; Velocity measurement;
Journal_Title :
Photonics Technology Letters, IEEE
