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Type: 
Journal
Description: 
We design an integrated optoelectronic device based on the whispering-gallery modes of a sapphire microsphere integrated with a liquid-crystal tuning medium to produce a narrowband, electrically tunable, channel-dropping filter. The sapphire microsphere is glued over a diffused waveguide in a glass substrate. At the base of the microsphere, a small volume of liquid crystal is infiltrated. We numerically evaluate the performance of the device and demonstrate a voltage tuning of the narrowband resonances.
Publisher: 
Optical Society of America
Publication date: 
1 Nov 2009
Authors: 

Giovanni Gilardi, Domenico Donisi, Ali Serpengüzel, Romeo Beccherelli

Biblio References: 
Volume: 34 Issue: 21 Pages: 3253-3255
Origin: 
Optics letters