Ultra-compact and broadband polarization-insensitive mode-order converting power splitter  

作　　者：陈浩琪 姚润葵 汪鹏君 符强 陈伟伟 戴世勋 孔德军 林健 金涛 李军 戴庭舸 杨建义 Haoqi Chen;Runkui Yao;Pengjun Wang;Qiang Fu;Weiwei Chen;Shixun Dai;Dejun Kong;Jian Lin;Tao Jin;Jun Li;Tingge Dai;Jianyi Yang(Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315211,China;College of Electrical and Electronic Engineering,Wenzhou University,Wenzhou 325035,China;College of Science and Technology,Ningbo University,Ningbo 315211,China;Laboratory of Infrared Materials and Devices,The Research Institute of Advanced Technologies,Ningbo University,Ningbo 315211,China;Department of Information Science and Electronics Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315211,China [2]College of Electrical and Electronic Engineering,Wenzhou University,Wenzhou 325035,China [3]College of Science and Technology,Ningbo University,Ningbo 315211,China [4]Laboratory of Infrared Materials and Devices,The Research Institute of Advanced Technologies,Ningbo University,Ningbo 315211,China [5]Department of Information Science and Electronics Engineering,Zhejiang University,Hangzhou 310027,China

出　　处：《Chinese Optics Letters》2024年第3期36-41,共6页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.62275134,62234008,and 61875098);the Zhejiang Provincial Natural Science Foundation(Nos.LY20F050003 and LY20F050001);the Youth Science and Technology Innovation Leading Talent Project of Ningbo(No.2023QL003);the Natural Science Foundation of Ningbo(Nos.2022J099 and 202003N4159);the K.C.Wong Magna Fund in Ningbo University。

摘　　要：A polarization-insensitive mode-order converting power splitter using a pixelated region is presented and investigated in this paper.As TE_(0)and TM_(0)modes are injected into the input port,they are converted into TE_(1)and TM_(1)modes,which evenly come out from the two output ports.The finite-difference time-domain method and direct-binary-search optimization algorithm are utilized to optimize structural parameters of the pixelated region to attain small insertion loss,low crosstalk,wide bandwidth,excellent power uniformity,polarization-insensitive property,and compact size.Experimental results reveal that the insertion loss,crosstalk,and power uniformity of the fabricated device at 1550 nm are 0.57,-19.67,and 0.094 d B in the case of TE polarization,while in the TM polarization,the relevant insertion loss,crosstalk,and power uniformity are 0.57,-19.40,and 0.11 d B.Within a wavelength range from 1520 to 1600 nm,for the fabricated device working at TE polarization,the insertion loss,crosstalk,and power uniformity are lower than 1.39,-17.64,and 0.14 dB.In the case of TM polarization,we achieved an insertion loss,crosstalk,and power uniformity less than 1.23,-17.62,and 0.14 dB.

关 键 词：integrated optics optical waveguide polarization-insensitive property mode-order converting power splitter 

分 类 号：TN626[电子电信—电路与系统]