Magneto-optical isolation and topological edge states at singular points in plasmonic structures

Georgios Veronis; Yin Huang; Yuecheng Shen; Vahid Foroughi Nezhad; Chenglong You

doi:10.1117/12.2633235

Magneto-optical isolation and topological edge states at singular points in plasmonic structures

Georgios Veronis^*
, Yin Huang
, Yuecheng Shen
, Vahid Foroughi Nezhad
, Chenglong You

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We introduce a nanoplasmonic isolator consisting of a cavity coupled to a metal-dielectric-metal (MDM) waveguide. The waveguide and cavity are filled with a magneto-optical (MO) material, and the structure is under a static magnetic field. We show that, when MO activity is present, the cavity becomes a traveling wave resonator with unequal decay rates into the forward and backward directions. As a result, the structure operates as an isolator. We also introduce non-Hermitian plasmonic waveguide-cavity systems with topological edge states (TESs) at singular points. The structure unit cells consist of an MDM waveguide side-coupled to MDM stub resonators with modulated distances between adjacent stubs. In such structures the modulated distances introduce an effective gauge magnetic field. We show that such structures achieve extremely high sensitivity of the reflected light intensity. TESs at singular points could lead to singularity-based plasmonic devices with enhanced performance.

Original language	English
Title of host publication	Active Photonic Platforms 2022
Editors	Ganapathi S. Subramania, Stavroula Foteinopoulou
Publisher	SPIE
ISBN (Electronic)	9781510653764
DOIs	https://doi.org/10.1117/12.2633235
State	Published - 2022
Externally published	Yes
Event	Active Photonic Platforms 2022 - San Diego, United States Duration: 21 Aug 2022 → 25 Aug 2022

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	12196
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Active Photonic Platforms 2022
Country/Territory	United States
City	San Diego
Period	21/08/22 → 25/08/22

Keywords

Isolator
effective gauge magnetic field
magneto-optical material
metal-dielectric-metal waveguide
non-Hermitian photonic systems
singular points
topological edge states
traveling wave resonator

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10.1117/12.2633235

Cite this

Veronis, G., Huang, Y., Shen, Y., Foroughi Nezhad, V., & You, C. (2022). Magneto-optical isolation and topological edge states at singular points in plasmonic structures. In G. S. Subramania, & S. Foteinopoulou (Eds.), Active Photonic Platforms 2022 Article 121960C (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12196). SPIE. https://doi.org/10.1117/12.2633235

@inproceedings{4d14d3071f9e4e6ab27dc65a47fe7a7b,

title = "Magneto-optical isolation and topological edge states at singular points in plasmonic structures",

abstract = "We introduce a nanoplasmonic isolator consisting of a cavity coupled to a metal-dielectric-metal (MDM) waveguide. The waveguide and cavity are filled with a magneto-optical (MO) material, and the structure is under a static magnetic field. We show that, when MO activity is present, the cavity becomes a traveling wave resonator with unequal decay rates into the forward and backward directions. As a result, the structure operates as an isolator. We also introduce non-Hermitian plasmonic waveguide-cavity systems with topological edge states (TESs) at singular points. The structure unit cells consist of an MDM waveguide side-coupled to MDM stub resonators with modulated distances between adjacent stubs. In such structures the modulated distances introduce an effective gauge magnetic field. We show that such structures achieve extremely high sensitivity of the reflected light intensity. TESs at singular points could lead to singularity-based plasmonic devices with enhanced performance.",

keywords = "Isolator, effective gauge magnetic field, magneto-optical material, metal-dielectric-metal waveguide, non-Hermitian photonic systems, singular points, topological edge states, traveling wave resonator",

author = "Georgios Veronis and Yin Huang and Yuecheng Shen and \{Foroughi Nezhad\}, Vahid and Chenglong You",

note = "Publisher Copyright: Copyright {\textcopyright} 2022 SPIE.; Active Photonic Platforms 2022 ; Conference date: 21-08-2022 Through 25-08-2022",

year = "2022",

doi = "10.1117/12.2633235",

language = "英语",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "Subramania, \{Ganapathi S.\} and Stavroula Foteinopoulou",

booktitle = "Active Photonic Platforms 2022",

address = "美国",

}

Veronis, G, Huang, Y, Shen, Y, Foroughi Nezhad, V & You, C 2022, Magneto-optical isolation and topological edge states at singular points in plasmonic structures. in GS Subramania & S Foteinopoulou (eds), Active Photonic Platforms 2022., 121960C, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12196, SPIE, Active Photonic Platforms 2022, San Diego, United States, 21/08/22. https://doi.org/10.1117/12.2633235

Magneto-optical isolation and topological edge states at singular points in plasmonic structures. / Veronis, Georgios; Huang, Yin; Shen, Yuecheng et al.
Active Photonic Platforms 2022. ed. / Ganapathi S. Subramania; Stavroula Foteinopoulou. SPIE, 2022. 121960C (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12196).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Magneto-optical isolation and topological edge states at singular points in plasmonic structures

AU - Veronis, Georgios

AU - Huang, Yin

AU - Shen, Yuecheng

AU - Foroughi Nezhad, Vahid

AU - You, Chenglong

PY - 2022

Y1 - 2022

N2 - We introduce a nanoplasmonic isolator consisting of a cavity coupled to a metal-dielectric-metal (MDM) waveguide. The waveguide and cavity are filled with a magneto-optical (MO) material, and the structure is under a static magnetic field. We show that, when MO activity is present, the cavity becomes a traveling wave resonator with unequal decay rates into the forward and backward directions. As a result, the structure operates as an isolator. We also introduce non-Hermitian plasmonic waveguide-cavity systems with topological edge states (TESs) at singular points. The structure unit cells consist of an MDM waveguide side-coupled to MDM stub resonators with modulated distances between adjacent stubs. In such structures the modulated distances introduce an effective gauge magnetic field. We show that such structures achieve extremely high sensitivity of the reflected light intensity. TESs at singular points could lead to singularity-based plasmonic devices with enhanced performance.

AB - We introduce a nanoplasmonic isolator consisting of a cavity coupled to a metal-dielectric-metal (MDM) waveguide. The waveguide and cavity are filled with a magneto-optical (MO) material, and the structure is under a static magnetic field. We show that, when MO activity is present, the cavity becomes a traveling wave resonator with unequal decay rates into the forward and backward directions. As a result, the structure operates as an isolator. We also introduce non-Hermitian plasmonic waveguide-cavity systems with topological edge states (TESs) at singular points. The structure unit cells consist of an MDM waveguide side-coupled to MDM stub resonators with modulated distances between adjacent stubs. In such structures the modulated distances introduce an effective gauge magnetic field. We show that such structures achieve extremely high sensitivity of the reflected light intensity. TESs at singular points could lead to singularity-based plasmonic devices with enhanced performance.

KW - Isolator

KW - effective gauge magnetic field

KW - magneto-optical material

KW - metal-dielectric-metal waveguide

KW - non-Hermitian photonic systems

KW - singular points

KW - topological edge states

KW - traveling wave resonator

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U2 - 10.1117/12.2633235

DO - 10.1117/12.2633235

M3 - 会议稿件

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T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Active Photonic Platforms 2022

A2 - Subramania, Ganapathi S.

A2 - Foteinopoulou, Stavroula

PB - SPIE

T2 - Active Photonic Platforms 2022

Y2 - 21 August 2022 through 25 August 2022

ER -

Magneto-optical isolation and topological edge states at singular points in plasmonic structures

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