title: Oscillatory thermal dynamics in high-Q PDMS-coated silica toroidal microresonators.
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.
authors.affiliation: Department of Electrical & Systems Engineering, Washington University in St Louis, MO 63130, USA.
authors.forename: Lina
authors.initials: L
authors.lastname: He
authors.forename: Yun-Feng
authors.initials: YF
authors.lastname: Xiao
authors.forename: Jiangang
authors.initials: J
authors.lastname: Zhu
authors.forename: Sahin Kaya
authors.initials: SK
authors.lastname: Ozdemir
authors.forename: Lan
authors.initials: L
authors.lastname: Yang
mesh_terms: D017076:Computer-Aided Design; D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D055096:Optical Devices; D009991:Oscillometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012822:Silicon Dioxide / Q000737:chemistry*; D014159:Transducers; D014732:Vibration
chemical_list: D004129:Dimethylpolysiloxanes; C013830:baysilon; D012822:Silicon Dioxide