Long-range plasmonic directional coupler switches controlled by nematic liquid crystals

被引：24

作者：

Zografopoulos, D. C. ^{[1
]}

Beccherelli, R. ^{[1
]}

机构：

[1] CNR, Ist Microelettron & Microsistemi CNR IMM, I-00133 Rome, Italy

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 07期

关键词：

WAVE-GUIDES; RESONANCE; FILMS;

D O I：

10.1364/OE.21.008240

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A liquid-crystal tunable plasmonic optical switch based on a long-range metal stripe directional coupler is proposed and theoretically investigated. Extensive electro-optic tuning of the coupler's characteristics is demonstrated by introducing a nematic liquid crystal layer above two coplanar plasmonic waveguides. The switching properties of the proposed plasmonic structure are investigated through rigorous liquid-crystal studies coupled with a finite-element based analysis of light propagation. A directional coupler optical switch is demonstrated, which combines very low power consumption, low operation voltages, adjustable crosstalk and coupling lengths, along with sufficiently reduced insertion losses. (C) 2013 Optical Society of America

引用

页码：8240 / 8250

页数：11

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