A TRUE PHASE SENSITIVE OPTICAL HETERODYNE POLARIMETER ON GLUCOSE CONCENTRATION MEASUREMENT

摘要

This paper proposes a novel method, which uses an optical polarized heterodyne polarimeter and lock-in technique to detect the concentration of a glucose solution obtained from the detection of a phase sensitive heterodyning signal. In this experiment, the phase measurement relates only with the optical activity of the concentration of a glucose solution; it is irrelevant to the index refraction of the test sample in the interferometer. The polarized common path feature with respect to the left-hand and right-hand side circular polarized lights is constructed in this experiment. The system stability and the advantage of the insensitivity to the environmental disturbance are also discussed. (C) 1997 Elsevier Science B.V. [References: 11]