General imaging properties of two-dimensional multimode interference couplers

被引：6
作者：
Jiang, Xiaoqing [1 ]
Sun, Yiling
Yang, Jianyi
Wang, Minghua
机构：
[1] Zhejiang Univ, Dept Informat & Elect Engn, Hangzhou 310027, Peoples R China
[2] Shenzhen Univ, Coll Engn & Technol, Shenzhen 518060, Peoples R China
来源：
OPTICAL ENGINEERING | 2006年 / 45卷 / 04期
基金：
中国国家自然科学基金;
关键词：
three-dimensional integrated optics; multimode interference couplers; self-imaging effect; imaging properties;
D O I：
10.1117/1.2190247
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Based on the guided-mode propagation analysis method and the self-imaging effect, the general imaging properties of the two-dimensional multimode interference coupler (2-D MMI) are generalized and discussed. The general formulas for the positions, intensities, and phases of the self-images, and for image overlap in 2-D MMIs are derived. The numbers, positions, intensities, and phases of the self-images are directly related to the position of the input field and the positional number. The self-imaging properties of 2-D MMIs can be regarded as the interference superposition of two orthogonal one-dimensional self-imaging effects. These results are verified by guided-mode propagation analysis. (c) 2006 Society of Photo-Optical Instrumentation Engineers.
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页数：7
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