多模硅基光子学的最新进展(特邀)  

Latest Developments in Multimode Silicon Photonics(Invited)

作　　者：刘姝君 刘若然 沈小琬 宋立甲 刘大建 易晓琳 赵伟科 洪仕瀚 张龙[1] 戴道锌[1] Liu Shujun;Liu Ruoran;Shen Xiaowan;Song Lijia;Liu Dajian;Yi Xiaolin;Zhao Weike;Hong Shihan;Zhang Long;Dai Daoxin(College of Optical Science and Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China)

机构地区：[1]浙江大学光电科学与工程学院,浙江杭州310027

出　　处：《光学学报》2024年第15期198-219,F0002,共23页Acta Optica Sinica

基　　金：国家自然科学基金(92150302,U23B2047,62321166651)。

摘　　要：近年来,多模光子学迅速发展,受到越来越多的关注。通过突破单模条件并引入多模波导,多模光子器件展现出独特的研究价值和应用潜力。特别是,硅光波导具有超大折射率差和超强模式色散等特性,为高性能多模光子器件的实现提供了关键物理基础。随着硅光波导模式特性及调控研究的不断深入,多模光子学逐渐形成一个独具特色的新体系,主要包括模式复用器件、高阶模辅助光子器件、展宽波导器件等。本文聚焦于多模硅基光子学的发展,回顾和总结了近年来该领域面向不同应用的重要进展,并对其未来发展进行了展望。Significance Multimode photonics has become increasingly attractive globally in recent years due to its potential for achieving ultra-high-performance on-chip photonic devices and large-scale photonic integration.This potential is realized through the introduction of broadened optical waveguides and the controlled manipulation of their fundamental and higher-order modes.Without necessitating changes to the fabrication process,multimode photonics overcomes the performance bottleneck previously inherent to single-mode condition-designed photonic devices.Consequently,this field paves the way for developing high-performance photonic devices without increasing fabrication complexity.High-index-contrast multimode photonic waveguides with strong mode dispersion play a key role in multimode photonics.Successful developments in this area have shown great potential for meeting application demands.Silicon photonic waveguides are particularly advantageous due to their ultra-small cross sections,low-cost fabrication,and strong mode dispersion from their ultra-high index contrast,providing a solid fundamental for high-performance multimode photonic devices.Flexible mode manipulation has proven multimode photonics to be extremely useful,leading to three types of devices:mode-division-multiplexed photonic devices,high-order-mode-assisted photonic devices,and broadened-waveguide photonic devices.Progress Initially,multimode photonic devices for mode-multiplexing systems offer significant benefits such as low loss,minimal crosstalk,and wide bandwidth,enabling support for multiple channels.Notable among these are multi-channel mode-division(de)multiplexing(MDM)devices,multimode waveguide bends,and crossings,demonstrating exceptional channel expansibility.Integrating MDM with wavelength-division multiplexing(WDM)and polarization-division-multiplexing establishes multi-dimensional multiplexing systems,offering promising solutions for high-capacity data transmissions.However,efficiently coupling multi-mode optical waveguides with few-

关 键 词：集成光学 硅基光子学 多模 模式复用 高性能 

分 类 号：O436[机械工程—光学工程]