Control of optical mode properties in cross-slot waveguides

被引：27
|
作者：
Khanna, Amit [1 ]
Saynatjoki, Antti [1 ]
Tervonen, Ari [1 ]
Honkanen, Seppo [1 ]
机构：
[1] Aalto Univ, Photon Grp, Dept Micro & Nanosci, FI-02015 Espoo, Finland
来源：
APPLIED OPTICS | 2009年 / 48卷 / 34期
关键词：
CONFINING LIGHT;
D O I：
10.1364/AO.48.006547
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A cross-slot waveguide geometry provides high confinement of the mode field of both fundamental quasi-TE and quasi-TM modes in geometrically perpendicular slots. A unique possibility to tailor optical mode characteristics such as effective index and confinement factor quite independently for the two polarizations with geometric and material parameters is shown. Nonbirefringent cross-slot geometries are presented. Fabrication related tolerances of the cross-slot geometry for low birefringence operation are studied. Means to externally tune the birefringence by a thermo-optic effect is also analyzed. Fabrication of a cross-slot waveguide test structure is demonstrated. (C) 2009 Optical Society of America
引用
收藏
页码：6547 / 6552
页数：6
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