Design of a tunable Fabry-Perot filter
A.Walczak, E.Nowinowski-Kruszelnicki, L.R.Jaroszewicz, and P.Marciniak
Warsaw, Poland
Pages: 58–64
Subsection: INFORMATION-MEASUREMENT SYSTEMS
Abstract
The way for design and analysis of a tunable Fabry-Perot filter (FPF) for monochromatic wave filtering is presented. The filter is filled with a liquid crystal (LC) to achieve controlled variation of the optic axis. The dependence of the spectral characteristics of the tunable FPF on the refractive index dispersion of the liquid crystal is explained in detail. The phase of reflection for the electromagnetic waves in the reflecting layers inside the filter was experimentally determined. A technique for determining the extinction in a transparent, scattering LC layer is described.
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