Compact and low crosstalk waveguide crossing using impedance matched metamaterial

被引：36
作者：
Ding, Weiqiang [1 ]
Tang, Donghua [1 ]
Liu, Yan [1 ]
Chen, Lixue [1 ]
Sun, Xiudong [1 ]
机构：
[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 11期
基金：
中国国家自然科学基金;
关键词：
finite difference time-domain analysis; impedance matching; metamaterials; micro-optics; nanophotonics; optical crosstalk; optical waveguides; TALK; INTERSECTIONS; ELIMINATION; REDUCTION; DESIGN;
D O I：
10.1063/1.3364145
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A waveguide crossing mechanism based on metamaterial is proposed and numerically investigated using finite difference in time domain method. The waveguide cross is filled with impedance matched metamaterial, which has a large absolute value of refractive index, and effectively suppresses the diffraction of the guiding mode in the crossing region. The waveguide cross is ultra compact, and valid for a wide range of crossing angle with negligible crosstalk and insertion loss. The compactness and high efficiency make this crossing mechanism valuable in micro and nano photonics.
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页数：3
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