Dispersion engineering of a silicon-nanocrystal-based slot waveguide for broadband wavelength conversion

被引：49
作者：
Liu, Qiang [1 ]
Gao, Shiming [1 ]
Li, Zhiqiang [1 ]
Xie, Yanqiao [1 ]
He, Sailing [1 ]
机构：
[1] Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Zhejiang, Peoples R China
来源：
APPLIED OPTICS | 2011年 / 50卷 / 09期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
NANOWAVEGUIDES; PERFORMANCE; DESIGN; CHIP;
D O I：
10.1364/AO.50.001260
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A proposal for broadband wavelength conversion using four-wave mixing is presented based on a slot waveguide with silicon nanocrystals (Si-nc's) as the optical nonlinear material. The dispersion of the waveguide is engineered to realize a flat dispersion as well as a small effective mode area for better nonlinear interaction by optimizing the waveguide dimensions. The conversion performance is synthetically analyzed and numerical results show that a bandwidth of over 400 nm and an efficiency of -2.38 dB can be achieved using a pump power of 150 mW in a 4 mm long Si-nc slot waveguide with slot width of 50 nm, slab width of 310 nm, and height of 305 nm. (C) 2011 Optical Society of America
引用
收藏
页码：1260 / 1265
页数：6
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