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Proceedings Paper

Common path swept-source OCT interferometer with artifact removal
Author(s): S. Vergnole; G. Lamouche; M. Dufour; B. Gauthier
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Paper Abstract

We present here the implementation of a fiber-based common-path interferometer for Swept Source Optical Coherence Tomography (SS-OCT). A common path configuration is often a suitable approach for increasing the stability of the measurements. Optical fibers are sensitive to temperature and some other mechanical perturbations which compromise absolute accuracy measurements. A common-path configuration provides a mean to define a reference at the probe location and, thereby, to compensate for the optical path length perturbations. Additionally, in SS-OCT, we have to deal with autocorrelation noise and the mirror image artifact due to the computation of the Fourier transform. Thus, our common-path implementation also includes acousto-optics modulators to remove the depth degeneracy as it has already been done when using a "traditional" interferometer configuration. The efficiency of our system is validated by comparing images acquired with a "traditional" SS-OCT configuration and with our common path SS-OCT configuration.

Paper Details

Date Published: 28 February 2008
PDF: 8 pages
Proc. SPIE 6847, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII, 68472W (28 February 2008); doi: 10.1117/12.761836
Show Author Affiliations
S. Vergnole, National Research Council Canada (Canada)
G. Lamouche, National Research Council Canada (Canada)
M. Dufour, National Research Council Canada (Canada)
B. Gauthier, National Research Council Canada (Canada)

Published in SPIE Proceedings Vol. 6847:
Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII
Joseph A. Izatt; James G. Fujimoto; Valery V. Tuchin, Editor(s)

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