Enhanced optical nonlinearity in a silicon–organic hybrid slot waveguide for all-optical signal processing

作     者：YONGHUA WANG SU HE XIAOYAN GAO PIAOPIAO YE LEI LEI WENCHAN DONG XINLIANG ZHANG PING XU YONGHUA WANG;Su HE;XIAOYAN GAO;PIAOPIAO YE;LEI LEI;WENCHAN DONG;XINLIANG ZHANG;PING XU

作者机构：College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhan 430074China Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2022年第10卷第1期

页      面：50-58页

核心收录：

学科分类：070207[理学-光学] 07[理学] 0702[理学-物理学] 

基　　金：National Key Research and Development Program of China(2017YFA0305200,2019YFB2203102) National Natural Science Foundation of China(61805151,61905083) Natural Science Foundation of Guangdong Province(2020A1515011492) Key Technologies Research and Development Program of Shenzhen(JSGG20201102173200001) 

主　　题：waveguide optical slot 

摘      要：Silicon photonic integrated devices used for nonlinear optical signal processing play a key role in ultrafast switching,computing,and modern optical ***,current devices suffer from limited operation speeds and low conversion efficiencies due to the intrinsically low nonlinear index of *** this paper,we experimentally demonstrate enhanced optical nonlinearity in a silicon–organic hybrid slot waveguide consisting of an ultranarrow slot waveguide coated with a highly nonlinear organic *** fabricated slot area is as narrow as 45 nm,which is,to the best of our knowledge,the narrowest slot width that has been experimentally reported in silicon slot *** nonlinear coefficient of the proposed device with a length of 3 mm is measured to be up to 1.43×10^(6) W^(-1)km^(-1).Based on the nanostructure design,the conversion efficiencies of degenerate four-wave mixing showed enhancements of more than 12 dB and 5 dB compared to those measured for an identical device without the organic material and a silicon strip waveguide,*** a proof of concept,all-optical canonical logic units based on the prepared device with two inputs at 40 Gb/s are *** obtained logic results showed clear temporal waveforms and wide-open eye diagrams with error-free performance,illustrating that our device has great potential for use in high-speed all-optical signal processing and high-performance computing in the nodes and terminals of optical networks.