Engineering the quality factors of coupled-cavity modes in photonic crystal slabs

被引：30

作者：

Fussell, David P. ^{[1
]}

Dignam, Marc M. ^{[1
]}

机构：

[1] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 18期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1063/1.2737430

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors present a tight-binding approach to calculating the quality factor, or Q, of the modes of coupled-cavity systems in photonic crystal slabs. They show how this approach can be used to engineer coupled-cavity waveguides and arrays so as to maximize the Q of the modes. Due to destructive interference of the out-of-plane radiation from individual cavities, the Q of some coupled-cavity modes can be much higher than the Q of the individual cavities. An array with as few as 25 coupled cavities can produce isolated modes with Qs more than an order of magnitude greater than the Q of the constituent cavities, providing an alternative approach to obtaining high-Q modes. (c) 2007 American Institute of Physics.

引用

页数：3

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