Excitation of defect modes from the extended photonic band-gap structures of 1D photonic lattices

被引:7
|
作者
Zhou Ke-Ya [1 ]
Guo Zhong-Yi [1 ]
Muhammad Ashfaq Ahmad [2 ]
Liu Shu-Tian [1 ]
机构
[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China
[2] COMSATS Inst Informat Technol, Dept Phys, Lahore 54000, Pakistan
基金
中国国家自然科学基金;
关键词
optical-induced photonic lattices; photonic band-gaps; defect modes; DISCRETE SOLITONS; LOCALIZED MODES;
D O I
10.1088/1674-1056/19/1/014201
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
This paper stuides numerically the model equation in a one dimensional defective photonic lattice by modifying the potential function to a periodic function. It is found that defect modes (DMs) can be regarded as Bloch modes which are excited from the extended photonic band-gap structure at Bloch wave-numbers with k(x) = 0. The DMs for both positive and negative defects are considered in this method.
引用
收藏
页数:5
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