Modal-reflectivity enhancement by geometry tuning in Photonic Crystal microcavities

被引：124

作者：

Sauvan, C ^{[1
]}

Lecamp, G ^{[1
]}

Lalanne, P ^{[1
]}

Hugonin, JP ^{[1
]}

机构：

[1] Univ Paris 11, CNRS, Inst Opt, Lab Charles Fabry, F-91403 Orsay, France

来源：

OPTICS EXPRESS | 2005年 / 13卷 / 01期

关键词：

D O I：

10.1364/OPEX.13.000245

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

When a guided wave is impinging onto a Photonic Crystal ( PC) mirror, a fraction of the light is not reflected back and is radiated into the claddings. We present a theoretical and numerical study of this radiation problem for several three-dimensional mirror geometries which are important for light confinement in micropillars, air-bridge microcavities and two-dimensional PC microcavities. The cause of the radiation is shown to be a mode-profile mismatch. Additionally, design tools for reducing this mismatch by tuning the mirror geometry are derived. These tools are validated by numerical results performed with a three-dimensional Fourier modal method. Several engineered mirror geometries which lower the radiation loss by several orders of magnitude are designed. (C) 2005 Optical Society of America.

引用

页码：245 / 255

页数：11

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