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2篇 您的检索式:作者名="Xingfeng Xiang"
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1Metamaterial-enabled arbitrary on-chip spatial mode manipulation显示文摘On-chip spatial mode operation,represented as mode-division multiplexing(MDM),can support high-capacity data communications and promise superior performance in various systems and numerous applications from optical sensing to nonlinear and quantum optics.However,the scalability of state-of-the-art mode manipulation techniques is significantly hindered not only by the particular mode-order-oriented design strategy but also by the inherent limitations of possibly achievable mode orders.Recently,metamaterials capable of providing subwavelength-scale control of optical wavefronts have emerged as an attractive alternative to manipulate guided modes with compact footprints and broadband functionalities.Herein,we propose a universal yet efficient design framework based on the topological metamaterial building block(BB),enabling the excitation of arbitrary high-order spatial modes in silicon waveguides.By simply programming the layout of multiple fully etched dielectric metamaterial perturbations with predefined mathematical formulas,arbitrary high-order mode conversion and mode exchange can be simultaneously realized with uniform and competitive performance.The extraordinary scalability of the metamaterial BB frame is experimentally benchmarked by a record high-order mode operator up to the twentieth.As a proof of conceptual application,an 8-mode MDM data transmission of 28-GBaud 16-QAM optical signals is also verified with an aggregate data rate of 813 Gb/s(7%FEC).This user-friendly metamaterial BB concept marks a quintessential breakthrough for comprehensive manipulation of spatial light on-chip by breaking the long-standing shackles on the scalability,which may open up fascinating opportunities for complex photonic functionalities previously inaccessible.Jinlong Xiang Zhiyuan Tao Xingfeng Li Yaotian Zhao Yu He Xuhan Guo Yikai Su 2022Light(Science & Applications)2022,11,7:2
2Haspin氨基端非激酶域与Pds5B的结合在有丝分裂期保护着丝粒区姐妹染色体粘连显示文摘文章简介黏连蛋白复合体(cohesin)维持姐妹染色单体配对,并促进染色体与纺锤体的正确连接。在有丝分裂的初期,染色体臂上的cohesin在其调节亚基Wapl的作用下被大量地去除,而着丝粒区的cohesin必须得以保留才能防止染色体的错误分离。Linli Zhou Cai Liang Qinfu Chen Zhenlei Zhang Bo Zhang Haiyan Yan Feifei Qi Miao Zhang Qi Yi Youchen Guan Xingfeng Xiang Xiaoqing Zhang Sheng Ye 汪方炜 2018科学新闻2018,0,4:0
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