Publication: Liquid-crystal tunable filter based on sapphire microspheres
Program
KU-Authors
KU Authors
Co-Authors
Gilardi, Giovanni
Donisi, Domenico
Beccherelli, Romeo
Advisor
Publication Date
Language
English
Type
Journal Title
Journal ISSN
Volume Title
Abstract
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.
Source:
Optics Letters
Publisher:
Optical Soc Amer
Keywords:
Subject
Optics