Method and device for measurement of glucose concentration using Polarization Senstivity Low Coherence Interferometry

摘要

the present invention is a low coherence interferometer sensitivity polarization (polarization sensitive low coherence interferometer (PS-LCI)) to relates to a glucose concentration measurement apparatus and method. ; The present invention includes a first polarization splitter for outputting a light beam polarized in the horizontal direction from the light source to accept (PBS), from the first polarization splitter The output level of the first quarter-wave beam of 22.5 to the horizontal indented under the plate (QWP) and sent to the optical splitter of the second quarter-wave plate of 45 (BS), a first quarter- wavelength plate (QWP), and light entering through the reference mirror (reference mirror), for detecting a first interference signal (Eox) of the horizontal polarization component light detector, for detecting a second light interference signal (Eoy) of the vertical polarization component detector, the light redirected to the first quarter-wave plate and quarter-wave plate of the second optical splitter come back from the front of the first polarization splitter jimyeo gathered under the light sent to the first photodetector and the second photodetector a second polarization splitter, a memory for storing the first optical detector and the second data outputted from the A / D converter, A / D converter for converting the detected signal into a digital signal from the photo detector, from the demodulated data stored in the memory (demodulation ) equipped with a processing unit that performs a process, wherein the processing unit includes a first photodetector and a second bandpass filter for receiving detected signals from the photodetector, the output of the Hilbert bandpass filter (Hilbert) conversion and includes a parameter extraction to obtain a polarized eliminated variables (depolarization) (S1) to extract the size (amplitude) and the Hilbert conversion unit, an output signal from the Hilbert transform to obtain the phase Stokes parameters (Stokes parameters) through the