1×3多模干涉分束器的设计与仿真  

Design and simulation of 1-by-3 multimode interference power splitter

作　　者：吕桓林[1] 刘洋洋[1] 郑丽[1] 张云翠[1] 邹念育[1] 

机构地区：[1]大连工业大学信息科学与工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2015年第2期132-135,共4页Journal of Dalian Polytechnic University

基　　金：国家自然科学基金资助项目(11105021)

摘　　要：利用导模传输分析方法描述了基于自映像原理的多模波导。以三维光束传播方法设计仿真了基于聚合物材料的多模干涉分束器。计算了正脊型波导的单模尺寸,结果表明波导宽度小于1.2μm时满足单模条件。进一步探究了多模干涉分束器长度和宽度的临界参数,其在可见光波段为输出场提供了最大值。多模耦合区的大小为12μm×113.5μm2。在多模耦合区引入锥形波导结构,有效地提高了器件性能。此器件具有易制备、较低的制备容差敏感度和结构紧凑的优点,符合光电集成的要求。The underlying self-imaging principle in multimode waveguides was described using a guided mode propagation analysis. A polymer multimode interference （MMI） power splitter was designed and simulated by using three-dimensional propagation method （3D-BPM）. The mode cutoff at a ridge structure became single mode was computed. The results showed that the waveguide was single-mode for width below 1.2 μm. The critical parameters like length and width of MMI were searched, which could give the maximum output field for the visible wavelength. The MMI sections has footprint of 12 μm ×113.5 μm2. A tapered waveguide was inserted between the input/output waveguides and the MMI zones, effectively improving the performance of the MMI. This component has advantages such as easy for fabrication, low sensitivity to fabrication error, and compact size, which are suitable for the optoelectronic integration.

关 键 词：多模干涉分束器 自映像效应 光束传播方法 

分 类 号：TN252[电子电信—物理电子学]