Whispering gallery modes in coated silica microspheres

Davor Ristic; Alessandro Chiasera; Enrico Moser; Patrice Feron; Gilles Cibiel; Mile Ivanda; Giancarlo C. Righini; Maurizio Ferrari

doi:10.1117/12.921620

10 May 2012 Whispering gallery modes in coated silica microspheres

Davor Ristic, Alessandro Chiasera, Enrico Moser, Patrice Feron, Gilles Cibiel, Mile Ivanda, Giancarlo C. Righini, Maurizio Ferrari

Author Affiliations +

Proceedings Volume 8431, Silicon Photonics and Photonic Integrated Circuits III; 84311P (2012) https://doi.org/10.1117/12.921620
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

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.

Citation Download Citation

Davor Ristic, Alessandro Chiasera, Enrico Moser, Patrice Feron, Gilles Cibiel, Mile Ivanda, Giancarlo C. Righini, and Maurizio Ferrari "Whispering gallery modes in coated silica microspheres", Proc. SPIE 8431, Silicon Photonics and Photonic Integrated Circuits III, 84311P (10 May 2012); https://doi.org/10.1117/12.921620

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