Fabry-Perot etalons including a layer of liquid crystal between the reflective surfaces are disclosed. Application of an electric field to the liquid crystal layer changes the effective refractive index of the liquid crystal layer, making the device tunable....http://www.google.fr/patents/US6842217?utm_source=gb-gplus-shareBrevet US6842217 - Fabry-perot etalons and tunable filters made using liquid crystal devices as tuning material
Fabry-perot etalons and tunable filters made using liquid crystal devices as ...
