Tuned liquid crystalline interferometer analysis by means of generalised Berreman matrix

The analysis of the tuned, liquid crystalline Fabry-Perot interferometer (FPTI) has been done by means of 4 x 4 matrix. Wide-ange incidence has been analysed in terms of Trollinger-Chipman correction for extraordinary wave. Results have been applied to determine constraints in design of the monochromatic tuned FPTI. Main features of the FPTI device and liquid crystal determining FPTI parameters has been described in detail. Special attention has been paid to dispersion of the LC' refraction indices as a factor of spectral FPFI' properties.