Papers Published

1. Graf, RN; Wax, A, Temporal coherence and time-frequency distributions in spectroscopic optical coherence tomography., Journal of the Optical Society of America A, vol. 24 no. 8 (August, 2007), pp. 2186-2195 [doi] .
   (last updated on 2023/06/01)

   Abstract:
   Traditional analysis of spectroscopic optical coherence tomography (SOCT) signals is limited by an uncertainty relationship between time (depth) and frequency (wavelength). The use of a bilinear time-frequency distribution for analysis, such as those that compose Cohen's class of functions, may provide a way to avoid this limitation. Here we present the relationship between traditional SOCT analysis and the relevant Cohen class functions: the Wigner and Choi-Williams distributions. While cross terms that arise in these bilinear time-frequency distributions have been viewed as an artifact, here we identify these terms with temporal coherence, which contains significant information about the signal through phase relationships. The utility of time-frequency distributions is illustrated through analysis of calculated signals.