Patent ID: 7973939
Filing Date: 2011-07-05
Classification: G01B

Abstract:
1. A differential-phase polarization-sensitive optical coherence tomography (DP-PSOCT) system for measuring a specimen, comprising: a polarized heterodyne interferometer including a differential amplifier being coupled to said first and second photo detectors of said polarized heterodyne interferometer for receiving the first and second optical heterodyne electrical signal outputs therefrom, and generating a differential signal output therefrom; a data acquisition unit being coupled to said first and second photo detectors of said polarized heterodyne interferometer and said differential amplifier for receiving the first and second optical heterodyne electrical signal outputs and the differential signal output therefrom, and for measuring amplitudes of the first and second optical heterodyne electrical signal outputs and the differential signal output; and a computing unit that is coupled to said data acquisition unit, and that is operable to compute the amplitudes measured by said data acquisition unit to determine at least one parameter corresponding to the measured information of the specimen.