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

77 Scopus citations


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 (US)
Pages (from-to)9571-9581
Number of pages11
JournalOptics Express
Issue number12
StatePublished - Jun 8 2009

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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