Bending effect on fiber acousto-optic mode coupling.
The acousto-optic effect in a bent fiber is studied experimentally and numerically by using the scalar finite-element method. The resulting transmission spectra show that new mode-coupling peaks appear due to the breaking of the mode spatial symmetry. The strength of new peaks increases as the fiber-bending curvature increases with a redshift or blueshift in wavelength, strongly depending on the orientation of fiber bending with respect to the acoustic-wave vibration direction.
Zhao
Jianhui
J
Department of Electronic Engineering, Tsinghua University, Beijing 100084, China. zhaojh01@mails.tsinghua.edu.cn
Liu
Xiaoming
X
Wang
Yan
Y
Luo
Ye
Y
D000162:Acoustics / Q000295:instrumentation*; D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008962:Models, Theoretical; D012542:Scattering, Radiation