METHOD FOR REGISTRATION OF ANGLE OF ROTATION OF PLANE OF POLARIZATION OF LIGHT FLUX IN TURBID ACTIVE MEDIA

摘要

The invention relates to methods for registration of angle of rotation of plane of polarization of light flux for measurement of concentration of optically active components in turbid medium, for instance concentration of sugar in blood. Method for registration of angle of turn of polarization plane of light flux that passes through turbid active medium is in fact that one uses source of radiation, Faraday modulator, photo receiver and system that amplifies electric signal, and cuvette with sample under investigation is placed in monochromatic light flux between two polarizers. Preliminarily one measures level of polarization of light with sample and by measured data one chooses optimal angle of modulation of faraday modulator with which one modulates plane of polarization of light flow, signal obtained on indicator, with maximal ratio of signal to noise is compensated through turn of polarizer with determination of angle of turn of polarization plane of light flux. The invention provides partial elimination of errors of measurements caused by effect of depolarization of light in turbid medium.