Subwavelength Grating Waveguide Supported by a Magnetic Dipole Mode

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

doi:10.1021/acsphotonics.3c01526

Subwavelength Grating Waveguide Supported by a Magnetic Dipole Mode

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

School of Microelectronics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	1456-1463
Number of pages	8
Journal	ACS Photonics
Volume	11
Issue number	4
DOIs	https://doi.org/10.1021/acsphotonics.3c01526
State	Published - 17 Apr 2024

Keywords

magnetic dipole
Mie resonance
silicon photonics
subwavelength grating waveguide
waveguide components

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10.1021/acsphotonics.3c01526

Cite this

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title = "Subwavelength Grating Waveguide Supported by a Magnetic Dipole Mode",

abstract = "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.",

keywords = "magnetic dipole, Mie resonance, silicon photonics, subwavelength grating waveguide, waveguide components",

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

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T1 - Subwavelength Grating Waveguide Supported by a Magnetic Dipole Mode

AU - Wang, Binbin

AU - Wang, Jianguo

AU - Zhai, Tingting

AU - Salas-Montiel, Rafael

AU - Liu, Jinze

AU - Li, Yongqian

AU - Qiao, Dayong

AU - Zhao, Jianlin

AU - Gan, Xuetao

PY - 2024/4/17

Y1 - 2024/4/17

N2 - 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.

AB - 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.

KW - magnetic dipole

KW - Mie resonance

KW - silicon photonics

KW - subwavelength grating waveguide

KW - waveguide components

UR - https://www.scopus.com/pages/publications/85188018071

U2 - 10.1021/acsphotonics.3c01526

DO - 10.1021/acsphotonics.3c01526

M3 - 文章

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JO - ACS Photonics

JF - ACS Photonics

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ER -

Subwavelength Grating Waveguide Supported by a Magnetic Dipole Mode

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