Abstract

It is shown that the relationship between capacitance and refractive index is linear for liquid-crystal optical devices, such as liquid-crystal Fabry–Perot interferometer filters and liquid-crystal microprism arrays. A linearizing circuit that compensates for the nonlinear properties of liquid-crystal optical devices is made, in which capacitance instead of applied voltage is monitored. It can also directly display the value of the transmission peak wavelength or the deflection angle.

© 1996 Optical Society of America

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