Genetic optimization of photonic crystal waveguide termination for both on-axis and off-axis highly efficient directional emission

被引：17
|
作者：
Jiang, Liyong [1 ,2 ]
Li, Haipeng [1 ]
Jia, Wei [1 ]
Li, Xiangyin [1 ]
Shen, Zexiang [2 ]
机构：
[1] Nanjing Univ Sci & Technol, Dept Phys, Nanjing 210094, Peoples R China
[2] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore
来源：
OPTICS EXPRESS | 2009年 / 17卷 / 12期
关键词：
TRANSMISSION; DESIGN;
D O I：
10.1364/OE.17.010126
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this work, we use the finite-difference time-domain method in conjunction with a genetic algorithm (GA) to design a photonic crystal waveguide with gratinglike surface added for highly-efficient directional emission. By placing a detector at different locations in the output field, we have obtained both on-axis and off-axis highly-efficient directional emission designs with the help of GA. The interference of light emitted from the outlet of waveguide and surfaces modes in gratinglike surface is believed to account for the directional beaming effect in our designs. (C) 2009 Optical Society of America
引用
收藏
页码：10126 / 10135
页数：10
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