Open AccessFlat top liquid crystal tunable filter using coupled Fabry-Perot cavities
Author(s) -
Shadi A. Alboon,
Robert G. Lindquist
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.000231
Subject(s) - passband , optics , fabry–pérot interferometer , materials science , liquid crystal tunable filter , filter (signal processing) , ripple , optical filter , band pass filter , optoelectronics , liquid crystal , physics , wavelength , computer science , quantum mechanics , voltage , computer vision
In this paper, a coupled Fabry-Perot cavities filter, using the liquid crystal as the tunable medium, is investigate to achieve tunable flat top filtering performance across the C and L bands. A tandem coupled Fabry-Perot is presented for a tunable passband filter with flat top and minimum ripple in the passband. The overall tuning range of the filter is 172 nm. Several designs are shown with comparable performance to the commercial available 100 GHz fixed single channel filters.