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Proceedings Paper

Evaluation of the reconstruction algorithms for a phase-stepped full-field optical coherence tomography
Author(s): Junle Qu; Zhihua Ding; Gaixia Xu; Ziyang Lin; Hanben Niu
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Paper Abstract

We report on the implementation of a phase-stepped full-field Optical Coherence Tomography which is realized with a superluminescent diode for illuminating the sample, voice coil and piezo-electric translators for controlling the optical path length of the reference channel, and a scientific-grade CCD array for recording 2-D sample interferograms. Evaluation results of several amplitude reconstruction algorithms for this phase-stepped OCT is presented, including 3-, 4-, and 5-step as well as a derived amplitude-based version of the Carre method, a 4-step algorithm that requires equal but arbitrary step sizes that need not be known. Using a planar mirror as the sample and different phase stepping protocols, sensitivity for the four reconstruction algorithms were measured at 85, 87, 95, and 90dB, respectively. Reconstruction results of in vitro bovine retina and a piece of plastic tape show that the performance of the system depends on whether the full dynamic range of the CCD camera is utilized.

Paper Details

Date Published: 2 February 2006
PDF: 6 pages
Proc. SPIE 6026, ICO20: Biomedical Optics, 60260O (2 February 2006);
Show Author Affiliations
Junle Qu, Shenzhen Univ. (China)
Zhihua Ding, Zhejiang Univ. (China)
Gaixia Xu, Shenzhen Univ. (China)
Ziyang Lin, Shenzhen Univ. (China)
Hanben Niu, Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 6026:
ICO20: Biomedical Optics
Gert von Bally; Qingming Luo, Editor(s)

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