All-optical nanopositioning of high-Q silica microspheres

Rafino M.J. Murphy; Fuchuan Lei; Jonathan M. Ward; Yong Yang; Síle Nic Chormaic

doi:10.1364/OE.25.013101

All-optical nanopositioning of high-Q silica microspheres

Rafino M.J. Murphy
, Fuchuan Lei
, Jonathan M. Ward
, Yong Yang
, Síle Nic Chormaic

Okinawa Institute of Science and Technology Graduate University

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

Abstract

A tunable, all-optical, coupling method is realised for a high-Q silica microsphere and an optical waveguide. By means of a novel optical nanopositioning method, induced thermal expansion of an asymmetric microsphere stem for laser powers up to 211 mW is observed and used to fine tune the microsphere-waveguide coupling. Microcavity displacements ranging from (0.61 ± 0.13) - (3.49 ± 0.13) μm and nanometer scale sensitivities varying from (2.81 ± 0.08) - (17.08 ± 0.76) nm/mW, with an apparent linear dependency of coupling distance on stem laser heating, are obtained. Using this method, the coupling is altered such that the different coupling regimes are achieved.

Original language	English
Pages (from-to)	13101-13106
Number of pages	6
Journal	Optics Express
Volume	25
Issue number	12
DOIs	https://doi.org/10.1364/OE.25.013101
Publication status	Published - 12 Jun 2017
Externally published	Yes

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title = "All-optical nanopositioning of high-Q silica microspheres",

abstract = "A tunable, all-optical, coupling method is realised for a high-Q silica microsphere and an optical waveguide. By means of a novel optical nanopositioning method, induced thermal expansion of an asymmetric microsphere stem for laser powers up to 211 mW is observed and used to fine tune the microsphere-waveguide coupling. Microcavity displacements ranging from (0.61 ± 0.13) - (3.49 ± 0.13) μm and nanometer scale sensitivities varying from (2.81 ± 0.08) - (17.08 ± 0.76) nm/mW, with an apparent linear dependency of coupling distance on stem laser heating, are obtained. Using this method, the coupling is altered such that the different coupling regimes are achieved.",

author = "Murphy, \{Rafino M.J.\} and Fuchuan Lei and Ward, \{Jonathan M.\} and Yong Yang and Chormaic, \{S{\'i}le Nic\}",

note = "Publisher Copyright: {\textcopyright}2017 Optical Society of America.",

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doi = "10.1364/OE.25.013101",

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AU - Murphy, Rafino M.J.

AU - Lei, Fuchuan

AU - Ward, Jonathan M.

AU - Yang, Yong

AU - Chormaic, Síle Nic

PY - 2017/6/12

Y1 - 2017/6/12

N2 - A tunable, all-optical, coupling method is realised for a high-Q silica microsphere and an optical waveguide. By means of a novel optical nanopositioning method, induced thermal expansion of an asymmetric microsphere stem for laser powers up to 211 mW is observed and used to fine tune the microsphere-waveguide coupling. Microcavity displacements ranging from (0.61 ± 0.13) - (3.49 ± 0.13) μm and nanometer scale sensitivities varying from (2.81 ± 0.08) - (17.08 ± 0.76) nm/mW, with an apparent linear dependency of coupling distance on stem laser heating, are obtained. Using this method, the coupling is altered such that the different coupling regimes are achieved.

AB - A tunable, all-optical, coupling method is realised for a high-Q silica microsphere and an optical waveguide. By means of a novel optical nanopositioning method, induced thermal expansion of an asymmetric microsphere stem for laser powers up to 211 mW is observed and used to fine tune the microsphere-waveguide coupling. Microcavity displacements ranging from (0.61 ± 0.13) - (3.49 ± 0.13) μm and nanometer scale sensitivities varying from (2.81 ± 0.08) - (17.08 ± 0.76) nm/mW, with an apparent linear dependency of coupling distance on stem laser heating, are obtained. Using this method, the coupling is altered such that the different coupling regimes are achieved.

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DO - 10.1364/OE.25.013101

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VL - 25

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JO - Optics Express

JF - Optics Express

IS - 12

ER -

All-optical nanopositioning of high-Q silica microspheres

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