Optical near-field study of photonic crystal tapers

被引：0

作者：

Neel, Delphine ^{[1
]}

Benyattou, Taha ^{[1
]}

Sanchis, Pablo ^{[2
]}

Marti, Javier ^{[2
]}

Bogaerts, Wim ^{[3
]}

Dumon, Pieter ^{[3
]}

Baets, Roel ^{[3
]}

机构：

[1] Univ Lyon, INSA Lyon, CNRS, UMR 5270,INL, F-69621 Villeurbanne, France

[2] Univ Politecn Valencia, Nanophoton Technol Ctr, Valencia 46022, Spain

[3] Univ Ghent, IMEC, Dept Informat Technol, B-9000 Ghent, Belgium

来源：

APPLIED OPTICS | 2009年 / 48卷 / 30期

关键词：

WAVE-GUIDES;

D O I：

10.1364/AO.48.005718

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A scanning near-field optical microscopy study is undertaken on photonic crystal tapers. These tapers are used to couple a 3 mu m wide multimode dielectric waveguide to a single-line defect monomode photonic crystal waveguide. Two kinds of taper, with or without a localized defect, are compared. Higher transmission efficiency is obtained when a defect is utilized. The near-field study at 1550 nm shows experimentally that this defect prevents leaky resonant states to appear in the taper and thus permits a decrease in out-of-plane losses. These observations are supported by band diagram calculations. (C) 2009 Optical Society of America

引用

页码：5718 / 5721

页数：4

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