Dependence of extrinsic loss on group velocity in photonic crystal waveguides

被引：119

作者：

O'Faolain, Liam ^{[1
]}

White, Thomas P. ^{[1
]}

O'Brien, David ^{[1
]}

Yuan, Xiaodong ^{[1
]}

Settle, Michael D. ^{[1
]}

Krauss, Thomas F. ^{[1
]}

机构：

[1] Univ St Andrews, Dept Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

来源：

OPTICS EXPRESS | 2007年 / 15卷 / 20期

关键词：

D O I：

10.1364/OE.15.013129

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We examine the effects of disorder on propagation loss as a function of group velocity for W1 photonic crystal (PhC) waveguides. Disorder is deliberately and controllably introduced into the photonic crystal by pseudo-randomly displacing the holes of the photonic lattice. This allows us to clearly distinguish two types of loss. Away from the band-edge and for moderately slow light ( group velocity c/20-c/30) loss scales sublinearly with group velocity, whereas near the band-edge, reflection loss increases dramatically due to the random and local shift of the band-edge. The optical analysis also shows that the random fabrication errors of our structures, made on a standard e-beam lithography system, are below 1 nm root mean square. (C) 2007 Optical Society of America.

引用

页码：13129 / 13138

页数：10

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