Evaluation of the reconstruction algorithms for a phase-stepped full-field optical coherence tomography

Junle Qu; Zhihua Ding; Gaixia Xu; Ziyang Lin; Hanben Niu

doi:10.1117/12.667159

2 February 2006 Evaluation of the reconstruction algorithms for a phase-stepped full-field optical coherence tomography

Junle Qu, Zhihua Ding, Gaixia Xu, Ziyang Lin, Hanben Niu

Proceedings Volume 6026, ICO20: Biomedical Optics; 60260O (2006) https://doi.org/10.1117/12.667159
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

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.

Citation Download Citation

Junle Qu, Zhihua Ding, Gaixia Xu, Ziyang Lin, and Hanben Niu "Evaluation of the reconstruction algorithms for a phase-stepped full-field optical coherence tomography", Proc. SPIE 6026, ICO20: Biomedical Optics, 60260O (2 February 2006); https://doi.org/10.1117/12.667159

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