Wave channelling in compact multiport waveguides patterned in electromagnetic crystals

被引：4

作者：

Fasquel, S ^{[1
]}

Mélique, X ^{[1
]}

Vanbésien, O ^{[1
]}

Lippens, D ^{[1
]}

机构：

[1] Univ Sci & Tech Lille Flandres Artois, Inst Elect Microelect & Nanotechnol, CNRS,UMR 8520, Dept Hyperfrequences & Semicond, F-59652 Villeneuve Dascq, France

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2002年 / 32卷 / 2-3期

关键词：

photonic crystal; electromagnetic bandgap; wavelength division multiplexing; add-drop filter; directive coupler;

D O I：

10.1016/S0749-6036(03)00005-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Routing functions are investigated through the use of compact waveguide structures inserted in two-dimensional electromagnetic crystals. Wave channelling is obtained in multibranch couplers whose geometries are carefully designed to promote both selective and directive transfer processes. A quality factor Q similar to 1100 (effective bandwidth: 0.09%) and a high directionality (similar to25 dB) for a full transfer process in a compact design can be obtained through this mode engineering of the coupling zone. It is shown that the origin of the directivity is a symmetry break owing to the superposition of cavity modes. A three-colour demultiplexer based on such a design will be finally proposed. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：145 / 151

页数：7

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