论文部分内容阅读
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.
We report a waveguide crossing based on a multimode-interference (MMI) structure for metal-insulator-metal (MIM) waveguides. MMI-based intersections comprises two orthogonal intersecting MMI waveguides that are connected to the single-mode input / output waveguide .Single self-images are formed at the crossing center and output plane of the MMI waveguide, thereby mitigating the crosstalk and improving the throughput. 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.