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A new simulation design of three-mode division (de)multiplexer based on a trident coupler and two cascaded 3×3 MMI silicon waveguides

机译:基于三叉戟耦合器和两个级联的3×3 MMI硅波导的三模分(多)频多路复用器的新仿真设计

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摘要

We propose a design of a silicon three-mode (de)multiplexing device based on a trident and two cascaded 3 x 3 multimode interferometers. Input lights at fundamental, first-order, and second-order modes of transverse electric (TE) polarization are simultaneously converted to fundamental TE mode and demultiplexed at different ports at the outputs. The design is carried out through both theoretical analysis and numerical simulation using three dimensional-beam propagation method and effective index method. The results show a successful three-mode multiplexing in 100 nm wavelength range around 1550 nm with low insertion loss ( 0.71 dB) and crosstalk (- 18 dB). The proposed device also exhibit a small footprint (5 mu m x 400 mu m) that makes it potential for not only wavelength-division multiplexing and multimode-division multiplexing transmission systems, but also high bitrate and compact on-chip silicon photonics integrated circuits.
机译:我们提出了一种基于三叉戟和两个级联的3 x 3多模干涉仪的硅三模(de)多路复用设备的设计。横向电(TE)偏振的基本,一阶和二阶模式的输入光同时转换为基本TE模式,并在输出的不同端口进行多路分解。通过理论分析和数值模拟,使用三维光束传播方法和有效指标方法进行了设计。结果表明,在1550 nm左右的100 nm波长范围内,成功的三模多路复用具有低插入损耗(<0.71 dB)和串扰(-18 dB)。拟议中的设备还具有较小的占地面积(5μmx400μm),这使其不仅具有波分复用和多模分复用传输系统的潜力,而且具有高比特率和紧凑的片上硅光子集成电路的潜力。

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