Unlocking multidimensional optical multicasting based on multi-mode PIN silicon waveguides  

作　　者：ZHUANG FAN ZIHAO YANG JIANJI DONG WENCHAN DONG JING XU XINLIANG ZHANG 

机构地区：[1]School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China [2]Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China [3]Hubei Optical Fundamental Research Center,Wuhan 430074,China [4]Optics Valley Laboratory,Wuhan 430074,China

出　　处：《Photonics Research》2024年第12期2938-2947,共10页光子学研究(英文版)

基　　金：National Natural Science Foundation of China(62275087,62275090);Fundamental Research Funds for the Central Universities,HUST(5003182133);Knowledge Innovation Program of Wuhan-Shuguang Project(2022010801010082).

摘　　要：Multidimensional optical multicasting can increase the number of multicast optical channels and enhance spectrum utilization,which is crucial for future high-capacity optical networks and high-performance optical computing.However,simultaneously multicasting more channels results in higher energy density,which increases nonlinear loss within the waveguide and hinders practical applications.In this study,we introduce a reversebiased PIN junction in the multi-mode waveguide to reduce nonlinear loss.Leveraging the multi-mode PIN silicon waveguide,we experimentally demonstrate a multidimensional multicasting strategy to simultaneously multicast an 80 Gb/s QPSK signal across 14 channels in both modes and wavelengths.Due to the PIN waveguide,the output power of the converted light after four-wave mixing(FWM)in three modes,TE0,TE1,and TE2,can be increased by 13 dB,11.7 dB,and 7.7 dB,respectively.Furthermore,the 80 Gb/s QPSK signal can be multicast in three modes and from one wavelength channel to nine,seven,and two wavelength channels,respectively.All channels demonstrate clear constellation diagrams and error-free performance(bit error rate<3.8×10^(−3)).This demonstration provides a viable solution for multicasting in future mode and wavelength hybrid multiplexing optical networks,while also enhancing the capabilities of high-speed optical computing.

关 键 词：WAVEGUIDE MULTICAST OPTICAL 

分 类 号：TN929.1[电子电信—通信与信息系统]