Abstract
A measurement of the optical rotation means to evaluate the optical characteristics of the saccharide and amino acid for a long time. Some principal of optical rotation measurement techniques are proposed by a rotating polarizer method, and a farady cell method. However, these measurement methods have a disadvantage of a large sized because of these movable parts, and these machines are expensive. The purpose of this research is to establish the azimuthal polarimeter that is consists of liquid crystal polarized modulator. A liquid crystal is powerful tool with some superior characteristics, miniature, high speed drive, and low consumption electricity.