Bahl M, Panoiu N-C, Osgood R M
Department of Electrical Engineering, Columbia University, New York, NY 10027, USA.
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 May;67(5 Pt 2):056604. doi: 10.1103/PhysRevE.67.056604. Epub 2003 May 9.
The nonlinear optical effects induced by a one-dimensional (1D) line defect, made of Kerr material, in a 2D photonic crystal are studied. Comprehensive ab initio numerical simulations based on the finite-difference time-domain method show efficient third-harmonic generation in a photonic crystal waveguide consisting of the 1D defect line. The relationship between the third harmonic generation process and the nonlinear modal properties of the waveguide is discussed. We investigate optical limiting in such a device, that is, control of the transmitted power as a function of the Kerr-induced variation of the refractive index. Power dependent spectral changes in such a device and its use as a frequency selector are also examined.
研究了由克尔材料构成的一维（1D）线缺陷在二维光子晶体中诱导产生的非线性光学效应。基于时域有限差分法的全面从头算数值模拟表明，在由一维缺陷线构成的光子晶体波导中能有效产生三次谐波。讨论了三次谐波产生过程与波导非线性模态特性之间的关系。我们研究了这种器件中的光学限幅，即作为克尔诱导折射率变化函数的透射功率控制。还研究了这种器件中与功率相关的光谱变化及其作为频率选择器的用途。
