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High-Q bismuth silicate nonlinear glass microsphere resonators
Pengfei Wang1,2, Ganapathy Senthil Murugan1, Timothy Lee1, Ming Ding1, Gilberto Brambilla1, Yuliya Semenova2, Qiang Wu2, Fumihito Koizumi3 and Gerald Farrell2
1. Optoelectronics Research Centre, University of Southampton, UK
2. Photonics Research Centre, Dublin Institute of Technology, Kevin Street, Dublin 8, Ireland
3. Technology Management Group, Asahi Glass Co., Ltd., Yokohama, 221-8755, Japan
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.
IEEE Photonics Journal (2012) Vol.4(3) pp.1013-1020
doi: 10.1109/JPHOT.2012.2202385
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Copyright University of Southampton 2006