Temporal coherence and time-frequency distributions in spectroscopic optical coherence tomography.

Journal Article

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.

Full Text

Duke Authors

Cited Authors

  • Graf, RN; Wax, A

Published Date

  • August 2007

Published In

Volume / Issue

  • 24 / 8

Start / End Page

  • 2186 - 2195

PubMed ID

  • 17621322

Pubmed Central ID

  • 17621322

Electronic International Standard Serial Number (EISSN)

  • 1520-8532

International Standard Serial Number (ISSN)

  • 1084-7529

Digital Object Identifier (DOI)

  • 10.1364/josaa.24.002186


  • eng