Liquid-crystal tunable filter based on sapphire microspheres
Optics Letters, Vol. 34, Issue 21, pp. 3253-3255 (2009)
http://dx.doi.org/10.1364/OL.34.003253
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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.
© 2009 Optical Society of America
OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.4080) Fiber optics and optical communications : Modulation
(160.3710) Materials : Liquid crystals
(290.4020) Scattering : Mie theory
(300.0300) Spectroscopy : Spectroscopy
(140.3945) Lasers and laser optics : Microcavities
ToC Category:
Spectroscopy
History
Original Manuscript: July 17, 2009
Revised Manuscript: September 1, 2009
Manuscript Accepted: September 18, 2009
Published: October 19, 2009
Citation
Giovanni Gilardi, Domenico Donisi, Ali Serpengüzel, and Romeo Beccherelli, "Liquid-crystal tunable filter based on sapphire microspheres," Opt. Lett. 34, 3253-3255 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-21-3253
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