Complex conjugate term manipulation in optical frequency-domain imaging using the time-frequency distribution

Norman Lippok; Stéphan Coen; Poul Nielsen; Frédérique Vanholsbeeck

doi:10.1117/12.911747

30 January 2012 Complex conjugate term manipulation in optical frequency-domain imaging using the time-frequency distribution

Norman Lippok, Stéphan Coen, Poul Nielsen, Frédérique Vanholsbeeck

Author Affiliations +

Proceedings Volume 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI; 82133C (2012) https://doi.org/10.1117/12.911747
Event: SPIE BiOS, 2012, San Francisco, California, United States

Abstract

We discuss two methods which use the intrinsic dispersion imbalance between interferometer arms in order to address and manipulate the complex conjugate terms in spectral domain optical coherence tomography. Using projections of the time-frequency plane, we can manipulate small induced dispersion and obtain similar modification of the complex conjugate term as large amount of chromatic dispersion. The algorithm described spreads the energy of the complex conjugate term over the entire A-scan. The method is applied to simulated OCT depth signals and offered a mirror term suppression of 20 dB. The second method shows how we can use the time-frequency distribution to filter the mirror terms for a pre-configured depth range about zero path length.

Citation Download Citation

Norman Lippok, Stéphan Coen, Poul Nielsen, and Frédérique Vanholsbeeck "Complex conjugate term manipulation in optical frequency-domain imaging using the time-frequency distribution", Proc. SPIE 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI, 82133C (30 January 2012); https://doi.org/10.1117/12.911747

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