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Applied Optics

Applied Optics


  • Vol. 42, Iss. 2 — Jan. 10, 2003
  • pp: 227–234

Resolution improvement with dispersion manipulation and a retrieval algorithm in optical coherence tomography

I-Jen Hsu, Chia-Wei Sun, Chih-Wei Lu, C. C. Yang, Chun-Ping Chiang, and Chii-Wann Lin  »View Author Affiliations

Applied Optics, Vol. 42, Issue 2, pp. 227-234 (2003)

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We propose and demonstrate what is to our knowledge a novel technique of improving the spatial resolution of an optical coherence tomography (OCT) system given a non-Gaussian light source spectrum. By using dispersive materials in the reference arm of the OCT system, the resultant dispersion variation led to a full-width at half maximum (FWHM) of the interference fringe envelope smaller than the Fourier transform-limited value of a Gaussian spectral shape with the same spectral FWHM, at the expense of significant tails. The effects of the tails, which would blur the OCT images, were tremendously reduced with a retrieval algorithm. Simulation results and processed OCT scanning images have shown the capability of the proposed technique.

© 2003 Optical Society of America

OCIS Codes
(100.3010) Image processing : Image reconstruction techniques
(170.4500) Medical optics and biotechnology : Optical coherence tomography

Original Manuscript: June 3, 2002
Revised Manuscript: September 16, 2002
Published: January 10, 2003

I-Jen Hsu, Chia-Wei Sun, Chih-Wei Lu, C. C. Yang, Chun-Ping Chiang, and Chii-Wann Lin, "Resolution improvement with dispersion manipulation and a retrieval algorithm in optical coherence tomography," Appl. Opt. 42, 227-234 (2003)

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