Frequency Domain Optical Coherence Tomography Signal Analysis And Experimental Research

Optical Coherence Tomography (OCT) is a new biological imaging technique, which is based on the exploration of the short coherence length of broadband light sources to obtain optical sectioning images at high axial resolution noninvasively. Fequceny domain optical coherence tomography (FDOCT) is extension of traditional time domain optical coherence tomography (TDOCT). FDOCT has superior sensitivity and better signal-to-noise performance compared with the corrresponding time domain method. Because of its unique imaging performance and potential of clinical applications, FDOCT has become one of the important topics in the biomedical areas nowdays.First, this dissertation discusses the origin and the current development as well as the advantages and disadvantages of FDOCT. Second, the basic principles, arrangements and the properties of each part of FDOCT are studied. The characteristic parameters and signal processing methods are then analyzed in detail. Third, the whole FDOCT system was designed and tested. Some preliminary experiments have been made with it. The experimental results are analyzed and the disadvantages of this experimental set up are also pointed out. The work described in this thises may be helpful for future development of a FDOCT imaging system.