Artifact removal in Fourier-domain optical coherence tomography with a piezoelectric fiber stretcher
Optics Letters, Vol. 33, Issue 7, pp. 732-734 (2008)
http://dx.doi.org/10.1364/OL.33.000732
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Abstract
We describe an artifact removal setup swept-source optical coherence tomography (OCT) system that enables high-speed full-range imaging. We implement a piezoelectric fiber stretcher to generate a periodic phase shift between successive A-scans, thus introducing a transverse modulation. The depth ambiguity is then resolved by performing a Fourier filtering in the transverse direction before processing the data in the axial direction. The dc artifact is also removed. The key factor is that the piezoelectric fiber stretcher can be used to generate discrete phase shifts with a high repetition rate. The proposed experimental setup is a much improved version of the previously reported B-M mode scanning for spectral-domain OCT in that it does not generate additional artifacts. It is a simple and low-cost solution for artifact removal that can easily be applied.
© 2008 Optical Society of America
OCIS Codes
(100.5070) Image processing : Phase retrieval
(110.4500) Imaging systems : Optical coherence tomography
(170.4500) Medical optics and biotechnology : Optical coherence tomography
ToC Category:
Imaging Systems
History
Original Manuscript: September 26, 2007
Revised Manuscript: February 15, 2008
Manuscript Accepted: February 18, 2008
Published: March 31, 2008
Virtual Issues
Vol. 3, Iss. 5 Virtual Journal for Biomedical Optics
Citation
Sébastien Vergnole, Guy Lamouche, and Marc L. Dufour, "Artifact removal in Fourier-domain optical coherence tomography with a piezoelectric fiber stretcher," Opt. Lett. 33, 732-734 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-7-732
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