Oscillatory thermal dynamics in high-Q PDMS-coated silica toroidal microresonators

  • Lina He
  • , Yun Feng Xiao
  • , Jiangang Zhu
  • , Sahin Kaya Ozdemir
  • , Lan Yang

Research output: Contribution to journalArticlepeer-review

Abstract

We study the oscillatory thermal dynamics of a high-Q PDMS-coated silica microtoroid both experimentally and theoretically. We demonstrate that the competing thermo-optic effects in silica and PDMS lead to thermally-induced self-modulation in the transmission spectra. A dynamical model is built using thermal dynamics and coupled-mode theory to analyze the oscillation behaviors. Effects of input power, taper-cavity air gap and wavelength scanning speed on the oscillation behaviors are investigated with a detailed comparison between theory and experiments.

Original languageEnglish
Pages (from-to)9571-9581
Number of pages11
JournalOptics Express
Volume17
Issue number12
DOIs
StatePublished - Jun 8 2009

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