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

来源：

CHINESE PHYSICS B | 2010年 / 19卷 / 01期

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

页数：5

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