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 con...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 cross- ing center and output plane of the MMI waveguide, thereby mitigating the crosstalk and improving the through- put. 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.展开更多
The tunable multiple plasmon-induced transparency （PIT） effect is investigated numerically in a metal-insulator-metal （MIM） waveguide with three side-coupled rectangular resonators. The system exhibits dual-mode P...The tunable multiple plasmon-induced transparency （PIT） effect is investigated numerically in a metal-insulator-metal （MIM） waveguide with three side-coupled rectangular resonators. The system exhibits dual-mode PIT effects in the visible and near-infrared regions. By adjusting the geometrical parameters of the structure, we can manipulate not only each single PIT window, but also the double PIT windows simulta- neously. Our structures may have potential applications for optical communication, integrated optics, and optical information processing. The finite element method （FEM） illustrates our theoretical design.展开更多
基金supported by the National Natural Science Foundation of China(Nos.11374041 and11574035)the Fund of State Key Laboratory of Information Photonics and Optical Communications(Beijing University of Posts and Telecommunications),China
文摘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 cross- ing center and output plane of the MMI waveguide, thereby mitigating the crosstalk and improving the through- put. 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.
基金supported by the National Natural Science Foundation of China(Nos.51506184,51172194,11504139,and 11447149)the Natural Science Foundation of Jiangsu Province of China(No.BK20140167)the Nature Science Foundation of Xuzhou Institute of Technology(No.XKY2014206)
文摘The tunable multiple plasmon-induced transparency （PIT） effect is investigated numerically in a metal-insulator-metal （MIM） waveguide with three side-coupled rectangular resonators. The system exhibits dual-mode PIT effects in the visible and near-infrared regions. By adjusting the geometrical parameters of the structure, we can manipulate not only each single PIT window, but also the double PIT windows simulta- neously. Our structures may have potential applications for optical communication, integrated optics, and optical information processing. The finite element method （FEM） illustrates our theoretical design.
