Transmission-reflection decoupling of non-Hermitian photonic doping epsilon-near-zero media  

作　　者：王勇幸 林季资 须萍 Yongxing Wang;Jizi Lin;Ping Xu(Zhangjiagang Campus,Jiangsu University of Science and Technology,Zhangjiagang 215600,China;Department of physics,Jiangsu University of Science and Technology Suzhou Institute of Technology,Zhangjiagang 215600,China;School of Physical Science and Technology,Soochow University,Suzhou 215006,China)

机构地区：[1]Zhangjiagang Campus,Jiangsu University of Science and Technology,Zhangjiagang 215600,China [2]Department of physics,Jiangsu University of Science and Technology Suzhou Institute of Technology,Zhangjiagang 215600,China [3]School of Physical Science and Technology,Soochow University,Suzhou 215006,China

出　　处：《Frontiers of physics》2024年第3期93-102,共10页物理学前沿（英文版）

基　　金：the National Natural Science Foundation of China(Nos.12104191 and 11204195);the Natural Science Research of Jiangsu Higher Education Institutions of China(No.21KJB140006);the Priority Academic Program Development of Jiangsu Higher Education Institutions.

摘　　要：We present a novel method to achieve the decoupling between the transmission and reflection waves of non-Hermitian doped epsilon-near-zero(ENZ)media by inserting a dielectric slit into the structure.Our method also allows for independent control over the amplitude and the phase of both the transmission and reflection waves through few dopants,enabling us to achieve various optical effects,such as perfect absorption,high-gain reflection without transmission,reflectionless high-gain transmission and reflectionless total transmission with different phases.By manipulating the permittivity of dopants with extremely low loss or gain,we can realize these effects in the same configuration.We also extend this principle to multi-port doped ENZ structures and design a highly reconfigurable and reflectionless signal distributor and generator that can split,amplify,decay and phase-shift the input signal in any desired way.Our method overcomes limitations of optical manipulation in doped ENZ caused by the interdependent nature of the transmission and reflection,and has potential applications in novel photonic devices.

关 键 词：photonic doping NON-HERMITIAN epsilon-near-zero media transmission-reflection decoupling 

分 类 号：O43[机械工程—光学工程]