基于亚波长光栅的超紧凑高宽带1X2功率分配器  

Ultra Compact High Broadband 1X2 Power Splitter Based on Subwavelength Grating

作　　者：潘东[1] Pan Dong(School of IoT Engineering,Jiangnan University,Wuxi,China)

机构地区：[1]江南大学物联网工程学院,江苏无锡

出　　处：《科学技术创新》2023年第9期76-79,共4页Scientific and Technological Innovation

摘　　要：集成光功率分配器是一种重要的片上光功能器件,本文在绝缘硅平台上研究设计了一种基于非对称定向耦合器的超紧凑高宽带1X23dB光功率分配器。器件使用了传统的定向耦合波导与非对称定向耦合波导级联,并嵌入亚波长光栅结构来平衡TE和TM偏振的耦合系数并减小器件的尺寸。该器件具有结构紧凑和偏振不敏感的特性,耦合区域尺寸为7.7μm×1.24μm。当功率分束比位于3 dB±0.5 dB范围下,器件的工作带宽为1530 nm-1730 nm,展现出了优越的高带宽分束性能。Integrated optical power splitter is an important optical device on chip.In this paper,an ultra-compact high broadband 1X23dB optical power splitter based on asymmetric directional coupler is designed on an insulated silicon platform.A conventional directional coupled waveguide is cascaded with an asymmetric directional coupled waveguide,and subwavelength grating structure is embedded to balance the coupling coefficients of TE and TM polarization and reduce the size of the device.The device is compact and polarization-insensitive,with a coupling region size of 7.7μm×1.24μm.When the power beam splitting ratio is in the range of 3dB±0.5dB,the device's working bandwidth is 1530 nm~1730 nm,showing superior high bandwidth beam splitting performance.

关 键 词：集成光学 SOI 光波导 光功率分配器 

分 类 号：TN252[电子电信—物理电子学]