Wideband slow light in chirped slot photonic-crystal coupled waveguides

被引：34

作者：

Hou, Jin ^{[1
,2
]}

Wu, Huaming ^{[1
,2
]}

Citrin, D. S. ^{[3
,4
]}

Mo, Wenqin ^{[1
,2
]}

Gao, Dingshan ^{[2
]}

Zhou, Zhiping ^{[1
,3
]}

机构：

[1] Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Beijing 10087, Peoples R China

[2] Huazhong Univ Sci & Technol, Coll Optoelect Sci & Engn, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China

[3] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

[4] CNRS, Unite Mixte Int Georgia Tech 2958, F-57070 Metz, France

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 10期

关键词：

CONFINING LIGHT; TIME-DOMAIN; BANDWIDTH; MODULATOR; MODES; SLAB;

D O I：

10.1364/OE.18.010567

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Wideband dispersion-free slow light in chirped-slot photonic-crystal coupled waveguides is proposed and theoretically investigated in detail. By systematically analyzing the dependence of band shape on various structure parameters, unique inflection points in the key photonic band with approximate zero group velocity can be obtained in an optimized slot photonic-crystal coupled waveguide. By simply chirping the widths of the photonic-crystal waveguides in the optimized structure, wideband (up to 20 nm) slow-light with optical confinement in the low dielectric slot is demonstrated numerically with relative temporal pulse-width spreading well below 8% as obtained from two-dimensional finite-difference time-domain simulations. The wideband slow-light operation of the proposed structures would offer significant potential for novel compact high-speed optical-signal-processing devices in silicon-based systems. (C) 2010 Optical Society of America

引用

页码：10567 / 10580

页数：14

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