Generalized formulation for performance degradations due to bending and edge scattering loss in microdisk resonators

被引：33

作者：

Heebner, J. E. ^{[1
]}

Bond, T. C. ^{[1
]}

Kallman, J. S. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

来源：

OPTICS EXPRESS | 2007年 / 15卷 / 08期

关键词：

D O I：

10.1364/OE.15.004452

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a generalized formulation for the treatment of both bending (whispering gallery) loss and scattering loss due to edge roughness in microdisk resonators. The results are applicable to microrings and related geometries. For thin disks with radii greater than the bend-loss limit, we find that the finesse limited by the scattering losses induced by edge roughness is independent of radii. While a strong lateral refractive index contrast is necessary to prevent bending losses, unless the radii are of the order of a few microns, lateral air-cladding is detrimental and only enhances scattering losses. The generalized formulation provides a framework for selecting the refractive index contrast that optimizes the finesse at a given radius. (c) 2007 Optical Society of America.

引用

页码：4452 / 4473

页数：22

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