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Hollow-bottle optical microresonators.

G Senthil Murugan1, M N Petrovich, Y Jung

  • 1Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK. smg@orc.soton.ac.uk

Optics Express
|October 15, 2011
PubMed
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Researchers demonstrate selective excitation of optical microresonator modes using a novel fabrication method. This technique offers high tolerance to misalignment and enables spectral cleaning for improved performance.

Area of Science:

  • Photonics
  • Optical Engineering
  • Materials Science

Background:

  • Whispering-gallery modes (WGMs) and bottle modes in optical microresonators are crucial for various photonic applications.
  • Fabrication of robust and precisely controlled microresonators remains a challenge.
  • Selective mode excitation is essential for optimizing device performance.

Purpose of the Study:

  • To demonstrate selective excitation of whispering-gallery and bottle modes in a novel hollow-bottle optical microresonator.
  • To investigate the robustness of mode excitation against angular misalignment.
  • To explore spectral cleaning techniques for enhanced resonator performance.

Main Methods:

  • Fabrication of a silica hollow-bottle microresonator using a pressure-compensated, soften-and-compress method.

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Fabrication of Silica Ultra High Quality Factor Microresonators
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Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

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Last Updated: May 28, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators
09:10

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

Fabrication of Silica Ultra High Quality Factor Microresonators
07:51

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

  • Coupling of tapered optical fibers at different locations along the resonator to excite modes.
  • Introduction of localized losses to the resonator surface for spectral manipulation.
  • Theoretical analysis of modal turning points and resonant wavelengths.

    • Main Results:

    • Successful selective excitation of whispering-gallery and bottle modes was achieved.
    • High tolerance of spectral characteristics (Q-factor, excitation efficiency) to angular misalignment was observed.
    • Localized losses effectively cleaned the transmission spectrum, demonstrating superior performance.
    • Theoretical analysis elucidated the mode-suppression mechanism and spectral cleaning.

    Conclusions:

    • The developed hollow-bottle microresonator fabrication method is robust and allows for selective mode excitation.
    • The resonator exhibits high tolerance to misalignment, simplifying device integration.
    • Localized losses provide an effective method for spectral cleaning and performance enhancement.
    • This work advances the development of microresonators for advanced photonic applications.