Optical Limiting and Switching of Ultrashort Pulses in Nonlinear Photonic Band Gap Materials

We numerically investigate nonlinear propagation of ultrashort pulses in a one-dimensional photonic band gap structure. We find that, near the band edge, n...

M Scalora，JP Dowling，CM Bowden，... - 《Physical Review Letters》

Microcavities in photonic crystals: Mode symmetry, tunability, and coupling efficiency

We investigate the properties of resonant modes which arise from the introduction of local defects in two-dimensional (2D) and 3D photonic crystals. We sho...

PR Villeneuve，S Fan，JD Joannopoulos - 《Physical Review B Condensed Matter》

Microcavities in Photonic Crystals

The introduction of a defect in a perfect photonic crystal can lead to the creation of sharp resonant electromagnetic states in the vicinity of the defect. The properties of these modes can be controled simply by changing the nature and ...

PR Villeneuve，S Fan，JD Joannopoulos - 《Physical Review B》

Optics in smoothly varying anisotropic planar structures: Application to liquid-crystal twist cells*

Optical transmittance and reflectance of continuously varying anisotropic planar media, such as nematic liquid crystals in Schadt鈥揌elfrich twist cells or...

DW Berreman - 《Journal of the Optical Society of America》

Design and evaluation of omnidirectional one-dimensional photonic crystals

We have theoretically and experimentally studied a wide range of realistic fabrication parameters for the formation of omnidirectional photonic band gaps (...

HY Lee，T Yao - 《Journal of Applied Physics》

Distribution of electromagnetic field and group velocities in two-dimensional periodic systems with dissipative metallic components

We study the distribution of the electromagnetic field of the eigenmodes and corresponding group velocities associated with the photonic band structures of...

V Kuzmiak，AA Maradudin - 《Physical Review B》

在高频区存在巨带隙的长方晶格二维光子晶体

本文利用降低光子晶体的对称性来提高绝对禁带宽度,提出两种长方结构长方介质柱二维光子晶体,用快速平面波展开法研究其高频区的带结构.经参数优化发现,长方晶格包含一...

梁华秋，冯尚申 - 《光子学报》

Electro-Tunable Defect Mode in One-Dimensional Periodic Structure Containing Nematic Liquid Crystal as a Defect Layer

Electrical tuning of defect modes in a one-dimensional periodic structure has been demonstrated using a nematic liquid crystal as a defect layer in the per...

OZAKI，Ryotaro，MATSUI，... - 《Japanese Journal of Applied Physics.pt Letters》

一维光子晶体中多缺陷耦合导致的杂质带

利用传输矩阵方法研究了包含多个周期性分布的缺陷的一维光子晶体的透射谱.以33个周期的1/4波堆存在5个缺陷的光子晶体为例作了数值计算.结果表明,在周期性光子晶体中加...

安丽萍，刘念华 - 《光子学报》

Engineering Photonic Crystal Impurity Bands for Multiple Channelled Optical Switches

We report theoretically on the engineering of photonic crystal impurity bands to realize multiple channelled optical switches. The mechanism is based on th...

江海涛，陈鸿，刘念华，... - 《中国物理快报(英文版)》