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Optical Engineering

General imaging properties of two-dimensional multimode interference couplers
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Paper Abstract

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.

Paper Details

Date Published: 1 April 2006
PDF: 7 pages
Opt. Eng. 45(4) 044602 doi: 10.1117/1.2190247
Published in: Optical Engineering Volume 45, Issue 4
Show Author Affiliations
Xiaoqing Jiang, Zhejiang Univ. (China)
Yiling Sun, Shenzhen Univ. (China)
Jianyi Yang, Zhejiang Univ. (China)
Minghua Wang, Zhejiang Univ. (China)

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