ANALYSIS OF A LIQUID-CRYSTAL FABRY-PEROT ETALON FILTER - A NOVEL MODEL

The authors propose a novel analysis method to investigate the charact eristics of an electrically tunable liquid-crystal Fabry-Perot interfe rometer (LC-FPI), Based on the solution of deformation analysis of liq uid crystal in an electric field and the assumption of small refractiv e index variation in the Fabry-Perot cavity, the voltage-dependent equ ivalent refractive index of the cavity has been derived. Tuning behavi ors of the LC-FPI filter were simulated by means of the dependence, Th e calculated result and the experimental measured data agree well with each other.