Enhanced Directional Coupling of Light with a Whispering Gallery Microcavity

Fuchuan Lei; Georgiy Tkachenko; Xuefeng Jiang; Jonathan M. Ward; Lan Yang; Síle Nic Chormaic

doi:10.1021/acsphotonics.9b01611

Enhanced Directional Coupling of Light with a Whispering Gallery Microcavity

Fuchuan Lei
, Georgiy Tkachenko
, Xuefeng Jiang
, Jonathan M. Ward
, Lan Yang
, Síle Nic Chormaic

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

Abstract

Directional coupling of light in nanophotonic circuits has recently attracted increasing interest, with numerous experimental realizations based on broken rotational or mirror symmetries of the light-matter system. The most prominent underlying effect is the spin-orbit interaction of light in subwavelength structures. Unfortunately, coupling of light to such structures is, in general, very inefficient. In this work, we experimentally demonstrate an order of magnitude enhancement of the directional coupling between two nanowaveguides by means of a whispering gallery microcavity. We also show that both transverse magnetic and transverse electric modes can be used for the enhancement.

Original language	English
Pages (from-to)	361-365
Number of pages	5
Journal	ACS Photonics
Volume	7
Issue number	2
DOIs	https://doi.org/10.1021/acsphotonics.9b01611
Publication status	Published - 19 Feb 2020
Externally published	Yes

Keywords

directional coupling
nanofiber
Purcell effect
spin-orbit coupling
whispering gallery

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10.1021/acsphotonics.9b01611

Cite this

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title = "Enhanced Directional Coupling of Light with a Whispering Gallery Microcavity",

abstract = "Directional coupling of light in nanophotonic circuits has recently attracted increasing interest, with numerous experimental realizations based on broken rotational or mirror symmetries of the light-matter system. The most prominent underlying effect is the spin-orbit interaction of light in subwavelength structures. Unfortunately, coupling of light to such structures is, in general, very inefficient. In this work, we experimentally demonstrate an order of magnitude enhancement of the directional coupling between two nanowaveguides by means of a whispering gallery microcavity. We also show that both transverse magnetic and transverse electric modes can be used for the enhancement.",

keywords = "directional coupling, nanofiber, Purcell effect, spin-orbit coupling, whispering gallery",

author = "Fuchuan Lei and Georgiy Tkachenko and Xuefeng Jiang and Ward, \{Jonathan M.\} and Lan Yang and Chormaic, \{S{\'i}le Nic\}",

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doi = "10.1021/acsphotonics.9b01611",

language = "English",

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AU - Lei, Fuchuan

AU - Tkachenko, Georgiy

AU - Jiang, Xuefeng

AU - Ward, Jonathan M.

AU - Yang, Lan

AU - Chormaic, Síle Nic

PY - 2020/2/19

Y1 - 2020/2/19

N2 - Directional coupling of light in nanophotonic circuits has recently attracted increasing interest, with numerous experimental realizations based on broken rotational or mirror symmetries of the light-matter system. The most prominent underlying effect is the spin-orbit interaction of light in subwavelength structures. Unfortunately, coupling of light to such structures is, in general, very inefficient. In this work, we experimentally demonstrate an order of magnitude enhancement of the directional coupling between two nanowaveguides by means of a whispering gallery microcavity. We also show that both transverse magnetic and transverse electric modes can be used for the enhancement.

AB - Directional coupling of light in nanophotonic circuits has recently attracted increasing interest, with numerous experimental realizations based on broken rotational or mirror symmetries of the light-matter system. The most prominent underlying effect is the spin-orbit interaction of light in subwavelength structures. Unfortunately, coupling of light to such structures is, in general, very inefficient. In this work, we experimentally demonstrate an order of magnitude enhancement of the directional coupling between two nanowaveguides by means of a whispering gallery microcavity. We also show that both transverse magnetic and transverse electric modes can be used for the enhancement.

KW - directional coupling

KW - nanofiber

KW - Purcell effect

KW - spin-orbit coupling

KW - whispering gallery

UR - https://www.scopus.com/pages/publications/85078541897

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DO - 10.1021/acsphotonics.9b01611

M3 - Article

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VL - 7

SP - 361

EP - 365

JO - ACS Photonics

JF - ACS Photonics

IS - 2

ER -

Enhanced Directional Coupling of Light with a Whispering Gallery Microcavity

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Keywords

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