Multifunctional Waveguide Tunnelling via Leaky Modes

Author:

Hu Chuanjie12ORCID,Li Jue1,Kong Xianghong2,Xue Shuwen1,Zhang Zhibin3,Tao Sicen1,Xiao Wen4,Zhu Shan4,Qiu Cheng‐Wei2,Chen Huan‐yang1ORCID

Affiliation:

1. Department of Physics and Institute of Electromagnetics and Acoustics College of Physical Science and Technology Xiamen University Xiamen 361005 China

2. Department of Electrical and Computer Engineering National University of Singapore Singapore 117583 Singapore

3. Department of Microelectronics and Integrated Circuit, School of Electronic Science and Engineering Xiamen University Xiamen 361005 China

4. Jiujiang Research Institute of Xiamen University Jiujiang 332000 China

Abstract

AbstractMuch effort in the past few years has been made in tunnelling, however, no work has been reported so far on how to maintain the maximum tunnelling of complex optical fields in waveguides, due to the limitations of existing physical mechanisms. Here, a new paradigm is presented for realizing anomalous wave tunnelling through a general effective double‐barrier model constructed by dispersion engineering, while preserving mode information. The observed tunnelling mechanism is corroborated well by experimental results in the microwave realm. Specifically, evanescent waves bridge the gap between external space and potential well, allowing us to modulate the leaky modes within the potential well and thus achieve multiple resonant tunnelling. Due to the constant phase difference between adjacent maximum tunnelling, such mechanism broadens the potential of binary integrated devices. For example, assembling the tunnelling unit into arrays straightforwardly alleviates the trade‐off dilemma between diffraction law and cut‐off frequency. In addition, this approach provides an ideal toolbox for achieving multifunctional tunnelling across waveguide modes of various orders or polarizations, which can boost various applications in optical filters, tunneling lasers, optical switching, and sensing.

Funder

National Key Research and Development Program of China

China Scholarship Council

Publisher

Wiley

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3