Reconfigurable multichannel amplitude equalizer based on cascaded silicon photonic microrings  

作　　者：CHANGPING ZHANG SHUJUN LIU HAO YAN DAJIAN LIU LONG ZHANG HUAN LI YAOCHENG SHI LIU LIU DAOXIN DAI 

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,Zijingang Campus,Hangzhou 310058,China [2]ZJU-Hangzhou Global Scientific and Technological Innovation Center,Hangzhou 311200,China [3]Ningbo Research Institute,Zhejiang University,Ningbo 315100,China

出　　处：《Photonics Research》2023年第5期742-749,共8页光子学研究（英文版）

基　　金：National Major Research and Development Program(2021YFB2801700,2021YFB2801702);National Science Fund for Distinguished Young Scholars(61725503);National Natural Science Foundation of China(61961146003,62105283,91950205,92150302);Natural Science Foundation of Zhejiang Province(LD19F050001);Zhejiang Provincial Major Research and Development Program(2021C01199);Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang(2021R01001);Fundamental Research Funds for the Central Universities(2021QNA5002)。

摘　　要：A compact on-chip reconfigurable multichannel amplitude equalizer based on cascaded elliptical microrings is proposed and demonstrated experimentally.With the optimized structure of the elliptical microring with adiabatically varied radii/widths,the average excess loss for each channel in the initialized state is measured to be less than 0.5 d B,while the attenuation dynamic range can be over 20 d B.Flexible tunability through the overlapping of the resonance peaks of adjacent wavelength-channels enables even higher attenuation dynamic ranges up to50 d B.Leveraging the thermo-optic effect and fine wavelength-tuning linearity,precise tuning of the resonance peak can be implemented,enabling dynamic power equalization of each wavelength-channel in wavelengthdivision-multiplexing(WDM)systems and optical frequency combs.The proposed architecture exhibits excellent scalability,which can facilitate the development of long-haul optical transport networks and high-capacity neuromorphic computing systems,while improving the overall performance of optical signals in WDM-related systems.

关 键 词：tuning MULTICHANNEL MICRORING 

分 类 号：TN715[电子电信—电路与系统] TN929.1