All-silicon low-loss THz temporal differentiator based on microring waveguide resonator platform  

作　　者：Yunjie Rui Shuyu Zhou Xuecou Tu Xu Yan Bingnan Yan Chen Zhang Ziyao Ye Huilin Zhang Jingya Xie Qing-Yuan Zhao La-Bao Zhang Xiao-Qing Jia Huabing Wang Lin Kang Jian Chen Peiheng Wu 

机构地区：[1]Research Institute of Superconductor Electronics(RISE),School of Electronic Science and Engineering,Nanjing University,Nanjing,Jiangsu 210023,China [2]Hefei National Laboratory,Hefei 230088,China [3]Purple Mountain Laboratories,Nanjing,Jiangsu 211111,China [4]Terahertz Technology Innovation Research Institute,Shanghai Key Lab of Modern Optical System,University of Shanghai for Science and Technology,Shanghai,200093,China

出　　处：《Light(Advanced Manufacturing)》2024年第2期14-23,共10页光（先进制造）（英文）

基　　金：support from the Innovation Program for Quantum Science and Technology(No.2021ZD0303401);Fundamental Research Funds for the Central Universities,National Natural Science Foundation of China(Grant Nos.62271245,62227820,62271242,62071214,62004093,12033002,62035014,62288101,and 11227904);National Key R&D Program of China(Grant No.2018YFB1801504);Excellent Youth Natural Science Foundation of Jiangsu Province(Grant No.BK20200060);Priority Academic Program Development of Jiangsu Higher Education Institutions,Key Lab of Optoelectronic Devices and Systems with Extreme Performance,and Jiangsu Key Laboratory of Advanced Techniques for Manipulating Electromagnetic Waves.

摘　　要：Microring resonators have been widely used in passive optical devices such as wavelength division multiplexers,differentiators,and integrators.Research on terahertz(THz)components has been accelerated by these photonics technologies.Compact and integrated time-domain differentiators that enable low-loss,high-speed THz signal processing are necessary for THz applications.In this study,an on-chip THz temporal differentiator based on all-silicon photonic technology was developed.This device primarily consisted of a microring waveguide resonator and was packaged with standard waveguide compatibility.It performed time-domain differentiation on input signals at a frequency of 405.45 GHz with an insertion loss of 2.5 dB and a working bandwidth of 0.36 GHz.Various periodic waveforms could be handled by this differentiator.This device could work as an edge detector,which detected step-like edges in high-speed input signals through differential effects.This development holds significant promise for future THz data processing technologies and THz communication systems.

关 键 词：Silicon photonics Whispering gallery mode resonator THz silicon waveguide 

分 类 号：TN751.2[电子电信—电路与系统]