由磁偶极子模式支持的亚波长光栅波导

IF 6.7 1区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Photonics Pub Date : 2024-03-14 DOI:10.1021/acsphotonics.3c01526

Binbin Wang, Jianguo Wang, Tingting Zhai, Rafael Salas-Montiel, Jinze Liu, Yongqian Li, Dayong Qiao, Jianlin Zhao and Xuetao Gan*,

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引用次数: 0

摘要

亚波长光栅（SWG）波导因其灵活的色散工程而成为构建光子集成电路的理想选择。这些 SWG 波导通常由具有类似电偶极子（ED）轮廓的纳米粒子链形成，这些粒子必须是非共振的，才能使 SWG 波导均匀化，成为有效的带状波导。在此，我们报告了由硅纳米粒子的磁偶极子（MD）模式支持的对应物。得益于 MD 模式的特殊环形电场，基于 MD 的 SWG 波导可以构建锥形耦合器、90° 弯曲波导和定向耦合器，其占地面积比基于传统 ED 的 SWG 波导更小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Subwavelength Grating Waveguide Supported by a Magnetic Dipole Mode

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Subwavelength Grating Waveguide Supported by a Magnetic Dipole Mode

Subwavelength grating (SWG) waveguides are attractive for building photonic integrated circuits due to their flexible dispersion engineering. These SWG waveguides are typically formed by a chain of nanoparticles with an electric dipole (ED)-like profile, which have to be nonresonant in order to homogenize the SWG waveguide as an effective strip waveguide. Here, we report the counterpart supported by the magnetic dipole (MD) mode of silicon nanoparticles. Benefiting from the special circular electric field of the MD mode, the MD-based SWG waveguide allows the construction of a tapered coupler, 90° bending waveguide, and directional coupler with more compact footprints than the counterparts composed by traditional ED-based SWG waveguides.

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来源期刊

ACS Photonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

11.90

自引率

5.70%

发文量

438

审稿时长

2.3 months

期刊介绍： Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.