Title :
Quasi-3-D beam-propagation method for modeling nonlinear wavelength conversion
Author :
Mou, Shing ; Lin, Ching-Fuh ; Chou, Hsu-Feng
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
5/1/2001 12:00:00 AM
Abstract :
The two-dimensional (2-D) iterative finite difference beam-propagation method (IFD-BPM) is modified to model the cylindrically symmetric three-dimensional (quasi-3-D) second-order nonlinear wavelength conversion in quasi-phase-matched condition. The study shows that the difference between the 2-D and 3-D schemes is small for the guided waves but large for the nonguided beams. The comparison with experimental results shows that the quasi-3-D IFD-BPM is closer to reality than the 2-D scheme. In addition, simulation using the quasi-3-D IFD-BPM reveals that plane-wave and Gaussian-beam assumptions are not sufficient for estimating the nonlinear conversion and beam propagation in second-order nonlinear devices
Keywords :
optical phase matching; optical waveguide theory; optical wavelength conversion; 2D iterative finite difference beam-propagation method; Gaussian-beam assumptions; beam propagation; cylindrically symmetric quasi-3D second-order nonlinear wavelength conversion; guided waves; nonguided beams; nonlinear conversion; nonlinear wavelength conversion modelling; plane-wave assumptions; quasi 3D beam-propagation method; quasi-3-D IFD-BPM; quasi-phase-matched condition; second-order nonlinear devices; Analytical models; Finite difference methods; Frequency conversion; Iterative methods; Optical devices; Optical frequency conversion; Optical harmonic generation; Optical wavelength conversion; Two dimensional displays; Wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
