Terahertz branching waveguide coupler with tunable coupling degree based on vanadium dioxide

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2024-10-11 DOI:10.1016/j.optcom.2024.131196

Wu Pan , Sen Qiu , Zhen Zhang , Kuan Ye , Lei Huang , Renpu Li

引用次数: 0

Abstract

This paper presents a terahertz branch waveguide directional coupler with tunable coupling based on vanadium dioxide (VO₂). Tuning of the coupling degree can be realized by the VO₂ film covering the surface of the branch waveguide. The tuning range of the coupling degree depended on the total width of the branch waveguide and the width of the branch encompassed by the VO₂ film. The coupling degree can be adjusted by controlling the conductivity of the VO₂ film. The operating frequency of the coupler was approximately 220 GHz, and the tuning range was from 3 dB to 20 dB. The isolation and return losses of the coupler were less than 20 dB. This coupler can realize coupling tuning and has potential applications in the field of terahertz communication.

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基于二氧化钒的具有可调耦合度的太赫兹分支波导耦合器

本文介绍了一种基于二氧化钒（VO2）的具有可调耦合度的太赫兹分支波导定向耦合器。耦合度的调谐可通过覆盖在分支波导表面的二氧化钒薄膜来实现。耦合度的调节范围取决于分支波导的总宽度和 VO2 薄膜覆盖的分支宽度。耦合度可以通过控制 VO2 薄膜的电导率来调节。耦合器的工作频率约为 220 GHz，调谐范围为 3 dB 至 20 dB。耦合器的隔离度和回波损耗均小于 20 dB。这种耦合器可以实现耦合调谐，在太赫兹通信领域具有潜在的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.