Variable optical attenuator based on photonic crystal waveguide with low-group-index tapers

被引：10
|
作者：
Zhao, Qiang [1 ]
Cui, Kaiyu [1 ]
Feng, Xue [1 ]
Liu, Fang [1 ]
Zhang, Wei [1 ]
Huang, Yidong [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China
来源：
APPLIED OPTICS | 2013年 / 52卷 / 25期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
LIGHT-MODULATOR; SWITCH; INTEGRATION; SOI;
D O I：
10.1364/AO.52.006245
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate a compact thermo-optic variable optical attenuator (VOA) based on the cutoff effect of W1 photonic crystal waveguide (PCW). In experiment, a variable attenuation range of 29 dB is achieved with a device length of only 16.8 mu m. The coupling loss is also reduced by 7.5 +/- 2.5 dB through introducing low-group-index tapers between the W1 PCW and strip waveguide. This VOA provides the largest variable attenuation range in the reported tunable PCW device to our knowledge. (C) 2013 Optical Society of America
引用
收藏
页码：6245 / 6249
页数：5
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