Field Optical Coherence Tomography Signal Analysis And Experimental Research

Full Field Optical Coherence Tomography (FF OCT) is the development of the Fiber Optics-based Optical Coherence Tomography (Fiber Optics-based OCT), which is characterized by its high three-dimensional resolution and imaging speed. In this thesis, the signal properties of FFOCT are analyzed and the corresponding experiment system is established. First of all, based on the analysis of the imaging principles of FFOCT, the generation, acquisition, processing and the display of the coherent signal are discussed in detail. Second, with the devices available in the Lab, the key parts for realizing FFOCT system are discussed, pointing out the problems when performing the experimentents. The illumination system and the movement stage for the sample arm of FFOCT are then designed, the beam-splitter device is improved and the PZT is calibrated. The FFOCT experimental system is then established. The performance of the system is tested and improved. With the sytem, the interference fringes have generated under the laser illumination. The interference fringes have also been obtained with the white light illumination.Finally, the imaging properties of the system are analyzed. The factors that influence the system performance are pointed out and the possible solutions are proposed. The work in the thesis is helpful for calculating optical sentioning images by using the interference fringe signals measured with FFOCT system in the future.