Title :
Forward Brillouin scattering in holey fibers
Author :
Shibata, Nori ; Nakazono, Akimichi ; Taguchi, Noritaka ; Tanaka, Shingo
Author_Institution :
Yazaki Technol. Center, Yazaki Corp., Shizuoka, Japan
Abstract :
Forward Brillouin scattering behavior of a holey fiber (HF) is investigated experimentally. The shear and longitudinal acoustic velocities are evaluated from measurements of forward and backward Brillouin scattering, respectively. Experimentally obtained results reveal that the acoustic velocity ratio, given as α (=shear velocity VS/longitudinal velocity VL), decreases as the ratio of the total air-hole area to fiber cross-sectional area becomes large. This means that increasing the air-hole area in an HF´s cross section lowers the shear velocity with respect to the mixed tortional-radial (TR2m) modes.
Keywords :
Brillouin spectra; nonlinear optics; optical fibres; forward Brillouin scattering; holey fibers; longitudinal acoustic velocities; mixed tortional-radial mode; shear acoustic velocities; Brillouin scattering; Hafnium; Holey fibers; Light scattering; Optical fiber devices; Optical fiber polarization; Optical fiber sensors; Optical fiber testing; Optical fibers; Optical scattering; Acoustic modes; Brillouin scattering; holey fiber (HF);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.862367
