Dispersion coding of ENZ media via multiple photonic dopants

Ziheng Zhou; Hao Li; Wangyu Sun; Yijing He; Iñigo Liberal; Nader Engheta; Zhenghe Feng; Yue Li

doi:10.1038/s41377-022-00892-8

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Dispersion coding of ENZ media via multiple photonic dopants

Original Articles

- Dispersion coding of ENZ media via multiple photonic dopants
- Light: Science & Applications Vol. 11, Issue 8, Pages: 1865-1875(2022)
- Affiliations：
  
  1.Department of Electronic Engineering, Tsinghua University, 100084, Beijing, China
  2.Department of Electrical and Electronic Engineering, Public University of Navarre, Pamplona, 31006, Spain
  3.Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Author bio：
  
  Yue Li (lyee@tsinghua.edu.cn)
- Funds：
- DOI：10.1038/s41377-022-00892-8
  CLC：
- Published：31 August 2022，
  
  Published Online：06 July 2022，
  
  Received：16 March 2022，
  
  Revised：10 June 2022，
  
  Accepted：13 June 2022
- Accepted：
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Zhou, Z. H. et al. Dispersion coding of ENZ media via multiple photonic dopants. Light: Science & Applications, 11, 1865-1875 (2022).
DOI：

Zhou, Z. H. et al. Dispersion coding of ENZ media via multiple photonic dopants. Light: Science & Applications, 11, 1865-1875 (2022). DOI： 10.1038/s41377-022-00892-8.

摘要

Abstract

Epsilon-near-zero (ENZ) media are opening up exciting opportunities to observe exotic wave phenomena. In this work

we demonstrate that the ENZ medium comprising multiple dielectric photonic dopants would yield a comb-like dispersion of the effective permeability

with each magnetic resonance dominated by one specific dopant. Furthermore

at multiple frequencies of interest

the resonant supercouplings appearing or not can be controlled discretely via whether corresponding dopants are assigned or not. Importantly

the multiple dopants in the ENZ host at their magnetic resonances are demonstrated to be independent. Based on this platform

the concept of dispersion coding is proposed

where photonic dopants serve as "bits" to program the spectral response of the whole composite medium. As a proof of concept

a compact multi-doped ENZ cavity is fabricated and experimentally characterized

whose transmission spectrum is manifested as a multi-bit reconfigurable frequency comb. The dispersion coding is demonstrated to fuel a batch of innovative applications including dynamically tunable comb-like dispersion profiled filters

radio-frequency identification tags

etc.

关键词

Keywords

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