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
Language
- eng