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Proceedings Paper

Whispering gallery modes in coated silica microspheres
Author(s): Davor Ristic; Alessandro Chiasera; Enrico Moser; Patrice Feron; Gilles Cibiel; Mile Ivanda; Giancarlo C. Righini; Maurizio Ferrari
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Paper Abstract

Silica microspheres were made by melting the tip of a standard telecom fiber and were coated with a 70SiO2 - 30 HfO2 sol-gel derived glass activated by 0.3 mol % of Er3+ ions. The samples were coated using a dip coating apparatus. The thickness of the coating was estimated to be around 1 μm. The whispering gallery modes of the coated resonator were studied using a full taper - microsphere coupling setup. Upon excitation at 1480 nm sharp peaks at wavelengths 1540- 1565 nm were observed. They were attributed to the whispering gallery modes of the microsphere falling in the wavelength range of the erbium emission.

Paper Details

Date Published: 10 May 2012
PDF: 6 pages
Proc. SPIE 8431, Silicon Photonics and Photonic Integrated Circuits III, 84311P (10 May 2012); doi: 10.1117/12.921620
Show Author Affiliations
Davor Ristic, IFN-CNR, CSMFO Lab. (Italy)
Alessandro Chiasera, IFN-CNR, CSMFO Lab. (Italy)
Enrico Moser, Trento Univ. (Italy)
Patrice Feron, ENSSAT-FOTON, CNRS (France)
Gilles Cibiel, Ctr. National d'Études Spatiales (France)
Mile Ivanda, Institut Ruder Boskovic (Croatia)
Giancarlo C. Righini, IFAC-CNR, MDF Lab. (Italy)
Maurizio Ferrari, IFN-CNR, CSMFO Lab. (Italy)

Published in SPIE Proceedings Vol. 8431:
Silicon Photonics and Photonic Integrated Circuits III
Laurent Vivien; Seppo K. Honkanen; Lorenzo Pavesi; Stefano Pelli, Editor(s)

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