Enhance stable coupling region of a high-Q WGM up to micrometer

Pengfa Chang; Botao Cao; Feng Gao; Ligang Huang; Wending Zhang; Fang Bo; Xuanyi Yu; Guoquan Zhang; Jingjun Xu

doi:10.1063/1.5121452

Enhance stable coupling region of a high-Q WGM up to micrometer

Pengfa Chang, Botao Cao, Feng Gao, Ligang Huang, Wending Zhang, Fang Bo, Xuanyi Yu, Guoquan Zhang, Jingjun Xu

School of Physical Science and Technology

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

8 Scopus citations

Abstract

A configuration to obtain the quasicritical coupling state with an enhanced stable coupling region was proposed and demonstrated experimentally by coupling two perpendicular vector modes in tapered fiber with the whispering gallery mode (WGM) in a microresonator. The observed stable coupling region of the high-Q WGM could be up to 1 μm with reliable polarization stability. This work makes it possible to apply direct laser writing and photolithography to prepare controllable coupling for on-chip ultrahigh-Q WGM microcavities and could also improve the stability of packaged WGM structures, which will be beneficial for WGM-based applications such as narrow-linewidth lasers and configurable microwave photonics.

Original language	English
Article number	211104
Journal	Applied Physics Letters
Volume	115
Issue number	21
DOIs	https://doi.org/10.1063/1.5121452
State	Published - 18 Nov 2019

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title = "Enhance stable coupling region of a high-Q WGM up to micrometer",

abstract = "A configuration to obtain the quasicritical coupling state with an enhanced stable coupling region was proposed and demonstrated experimentally by coupling two perpendicular vector modes in tapered fiber with the whispering gallery mode (WGM) in a microresonator. The observed stable coupling region of the high-Q WGM could be up to 1 μm with reliable polarization stability. This work makes it possible to apply direct laser writing and photolithography to prepare controllable coupling for on-chip ultrahigh-Q WGM microcavities and could also improve the stability of packaged WGM structures, which will be beneficial for WGM-based applications such as narrow-linewidth lasers and configurable microwave photonics.",

author = "Pengfa Chang and Botao Cao and Feng Gao and Ligang Huang and Wending Zhang and Fang Bo and Xuanyi Yu and Guoquan Zhang and Jingjun Xu",

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AU - Chang, Pengfa

AU - Cao, Botao

AU - Gao, Feng

AU - Huang, Ligang

AU - Zhang, Wending

AU - Bo, Fang

AU - Yu, Xuanyi

AU - Zhang, Guoquan

AU - Xu, Jingjun

PY - 2019/11/18

Y1 - 2019/11/18

N2 - A configuration to obtain the quasicritical coupling state with an enhanced stable coupling region was proposed and demonstrated experimentally by coupling two perpendicular vector modes in tapered fiber with the whispering gallery mode (WGM) in a microresonator. The observed stable coupling region of the high-Q WGM could be up to 1 μm with reliable polarization stability. This work makes it possible to apply direct laser writing and photolithography to prepare controllable coupling for on-chip ultrahigh-Q WGM microcavities and could also improve the stability of packaged WGM structures, which will be beneficial for WGM-based applications such as narrow-linewidth lasers and configurable microwave photonics.

AB - A configuration to obtain the quasicritical coupling state with an enhanced stable coupling region was proposed and demonstrated experimentally by coupling two perpendicular vector modes in tapered fiber with the whispering gallery mode (WGM) in a microresonator. The observed stable coupling region of the high-Q WGM could be up to 1 μm with reliable polarization stability. This work makes it possible to apply direct laser writing and photolithography to prepare controllable coupling for on-chip ultrahigh-Q WGM microcavities and could also improve the stability of packaged WGM structures, which will be beneficial for WGM-based applications such as narrow-linewidth lasers and configurable microwave photonics.

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SN - 0003-6951

VL - 115

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 21

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ER -

Enhance stable coupling region of a high-Q WGM up to micrometer

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