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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 21 — Oct. 8, 2012
  • pp: 23398–23413

Optics InfoBase > Optics Express > Volume 20 > Issue 21 > Page 23398

Dispersion compensation in Fourier domain optical coherence tomography using the fractional Fourier transform

Norman Lippok, Stéphane Coen, Poul Nielsen, and Frédérique Vanholsbeeck  »View Author Affiliations


Optics Express, Vol. 20, Issue 21, pp. 23398-23413 (2012)
http://dx.doi.org/10.1364/OE.20.023398


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Abstract

We address numerical dispersion compensation based on the use of the fractional Fourier transform (FrFT). The FrFT provides a new fundamental perspective on the nature and role of group-velocity dispersion in Fourier domain OCT. The dispersion induced by a 26 mm long water cell was compensated for a spectral bandwidth of 110 nm, allowing the theoretical axial resolution in air of 3.6 μm to be recovered from the dispersion degraded point spread function. Additionally, we present a new approach for depth dependent dispersion compensation based on numerical simulations. Finally, we show how the optimized fractional Fourier transform order parameter can be used to extract the group velocity dispersion coefficient of a material.

© 2012 OSA

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(070.2575) Fourier optics and signal processing : Fractional Fourier transforms

ToC Category:
Imaging Systems

History
Original Manuscript: July 3, 2012
Revised Manuscript: September 6, 2012
Manuscript Accepted: September 14, 2012
Published: September 26, 2012

Citation
Norman Lippok, Stéphane Coen, Poul Nielsen, and Frédérique Vanholsbeeck, "Dispersion compensation in Fourier domain optical coherence tomography using the fractional Fourier transform," Opt. Express 20, 23398-23413 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-21-23398


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