Large-scale dispersion compensation with a TM-type chirped multimode waveguide grating  

作　　者：Shujun Liu Ruitao Ma Weike Zhao Zejie Yu Daoxin Dai 刘姝君;马睿韬;赵伟科;俞泽杰;戴道锌(State Key Laboratory for Modern Optical Instrumentation,Center for Optical&Electromagnetic Research,College of Optical Science and Engineering,International Research Center for Advanced Photonics,Zhejiang University,Hangzhou 310058,China;Jiaxing Key Laboratory of Photonic Sensing&Intelligent Imaging,Jiaxing 314000,China;Intelligent Optics&Photonics Research Center,Jiaxing Research Institute,Zhejiang University,Jiaxing 314000,China;Ningbo Research Institute,Zhejiang University,Ningbo 315100,China)

机构地区：[1]State Key Laboratory for Modern Optical Instrumentation,Center for Optical&Electromagnetic Research,College of Optical Science and Engineering,International Research Center for Advanced Photonics,Zhejiang University,Hangzhou 310058,China [2]Jiaxing Key Laboratory of Photonic Sensing&Intelligent Imaging,Jiaxing 314000,China [3]Intelligent Optics&Photonics Research Center,Jiaxing Research Institute,Zhejiang University,Jiaxing 314000,China [4]Ningbo Research Institute,Zhejiang University,Ningbo 315100,China

出　　处：《Chinese Optics Letters》2024年第12期51-56,共6页中国光学快报(英文版)

基　　金：supported by the National Key Research and Development Program of China(No.2022YFB2803800);the National Natural Science Foundation of China(Nos.91950205,92150302,and 62205292);the Natural Science Foundation of Zhejiang Province(No.LDT23F04012F05);the Zhejiang Provincial Major Research and Development Program(No.2021C01199);the Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang(No.2021R01001)。

摘　　要：Chirped Bragg grating is a powerful dispersion compensator.It has the advantages of a broad working bandwidth,a simple structure,and a compact footprint.However,previously reported integrated silicon chirped Bragg gratings relying on the transverse electric(TE)modes fail to achieve a large time delay because the TE modes are hypersensitive to sidewall roughness and fabrication errors.Here,we propose and demonstrate a dispersion compensator utilizing a transverse magnetic(TM)type silicon chirped multimode waveguide grating(CMWG),which exhibits a broad working bandwidth of 30.3 nm,an extensive dispersion of 25.1 ps/nm,and a recorded large group delay of 812.6 ps.

关 键 词：silicon dispersion compensation multimode waveguide grating spiral grating 

分 类 号：TN2[电子电信—物理电子学]