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Multimode-interference-based crossing for metal-insulator-metal waveguides

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Abstract

We report a waveguide crossing based on a multimode-interference (MMI) structure for metal-insulator-metal (MIM) waveguides. The MMI-based crossing comprises two orthogonal intersecting MMI waveguides that are connected to the single-mode input/output waveguide symmetrically. Single self-images are formed at the crossing center and output plane of the MMI waveguide, thereby mitigating the crosstalk and improving the throughput. The characteristics of the proposed MMI-based crossing are investigated with the finite element method of Comsol Multiphysics. The results show that the throughput reaches ?1.8 dB and the crosstalk is less than ?46 dB at the wavelength of 1550 nm.

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DOI:10.3788/col201715.032301

所属栏目:Optical devices

收稿日期:2016-09-24

录用日期:2016-12-23

网络出版日期:2017-01-22

作者单位    点击查看

Weijie Mai:State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 1 00876, ChinaSchool of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
Luna Cui:State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 1 00876, ChinaSchool of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
and Li Yu:State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 1 00876, ChinaSchool of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

联系人作者:联系作者(luna0517@126.com)

备注:This work was supported by the National Natural Science Foundation of China (Nos. 11374041 and 11574035) and the Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), China.

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引用该论文

Weijie Mai, Luna Cui, and Li Yu, "Multimode-interference-based crossing for metal-insulator-metal waveguides," Chinese Optics Letters 15(3), 032301 (2017)

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