On-chip terahertz orbital angular momentum demultiplexer  

作　　者：XIAOHAN JIANG WANYING LIU QUAN XU YUANHAO LANG YIKAI FU FAN HUANG HAITAO DAI YANFENG LI XUEQIAN ZHANG JIANQIANG GU JIAGUANG HAN WEILI ZHANG 

机构地区：[1]Center for Terahertz Waves,College of Precision Instrument and Optoelectronics Engineering,and Key Laboratory of Optoelectronics Information and Technology(Ministry of Education),Tianjin University,Tianjin 300072,China [2]Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology,School of Science,Tianjin University,Tianjin 300072,China [3]Guangxi Key Laboratory of Optoelectronic Information Processing,School of Optoelectronic Engineering,Guilin University of Electronic Technology,Guilin 541004,China [4]School of Electrical and Computer Engineering,Oklahoma State University,Stillwater,Oklahoma 74078,USA

出　　处：《Photonics Research》2024年第5期1044-1054,共11页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(62375203,61935015,62027820,62375200,62025504,62075158,62335011);National Science Foundation(2114103);Yunnan Expert Workstation(202205AF150008)。

摘　　要：The terahertz regime is widely recognized as a fundamental domain with significant potential to address the demands of next-generation wireless communications.In parallel,mode division multiplexing based on orbital angular momentum(OAM)shows promise in enhancing bandwidth utilization,thereby expanding the overall communication channel capacity.In this study,we present both theoretical and experimental demonstrations of an on-chip terahertz OAM demultiplexer.This device effectively couples and steers seven incident terahertz vortex beams into distinct high-quality focusing surface plasmonic beams,and the focusing directions can be arbitrarily designated.The proposed design strategy integrates space-to-chip mode conversion,OAM recognition,and on-chip routing in a compact space with subwavelength thickness,exhibiting versatility and superior performance.

关 键 词：DEMULTIPLEXER MOMENTUM ANGULAR 

分 类 号：TN929.1[电子电信—通信与信息系统]