Title :
High-Q Bismuth-Silicate Nonlinear Glass Microsphere Resonators
Author :
Wang, Pengfei ; Murugan, Ganapathy Senthil ; Lee, Timothy ; Ding, Ming ; Brambilla, Gilberto ; Semenova, Yuliya ; Wu, Qiang ; Koizumi, Fumihito ; Farrell, Gerald
Author_Institution :
Optoelectron. Res. Centre, Univ. of Southampton, Southampton, UK
fDate :
6/1/2012 12:00:00 AM
Abstract :
The fabrication and characterization of a bismuth-silicate glass microsphere resonator has been demonstrated. At wavelengths near 1550 nm, high-modes can be efficiently excited in a 179-μm diameter bismuth-silicate glass microsphere via evanescent coupling using a tapered silica fiber with a waist diameter of circa 2 μm. Resonances with Q-factors as high as were observed. The dependence of the spectral response on variations in the input power level was studied in detail to gain an insight into power-dependent thermal resonance shifts. Because of their high nonlinearity and high- factors, bismuth-silicate glass microspheres offer the potential for robustly assembled fully integrated all-optical switching devices.
Keywords :
Q-factor; bismuth compounds; glass; optical fabrication; optical fibres; optical glass; optical resonators; silicon compounds; Q-factors; SiO2-Bi2O3; bismuth-silicate glass microsphere; evanescent coupling; fully integrated all-optical switching devices; high-Q bismuth-silicate nonlinear glass microsphere resonators; input power level; power-dependent thermal resonance shifts; size 179 mum; size 2 mum; spectral response; tapered silica fiber; wavelength 1550 nm; Bismuth; Glass; Nonlinear optics; Optical fiber communication; Optical fibers; Optical resonators; Silicon compounds; Optical resonators; Q factor; photothermal effects;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2012.2202385
