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Journal of Biomedical Optics • Open Access

Full-range swept source optical coherence tomography based on carrier frequency by transmissive dispersive optical delay line
Author(s): Tong Wu; Zhihua Ding; Chuan Wang; Minghui Chen

Paper Abstract

A high speed swept source optical coherence tomography (SS-OCT) system capable of full-range imaging is presented. Wave-number carrier frequency is introduced into the spectral interference signal by a transmissive dispersive optical delay line (TDODL). High carrier frequency in the spectral interference signal corresponding to an equivalent distance-shift is exploited to obtain full-range OCT imaging. Theoretical development is conducted with the instantaneous coherence function introduced for a complete description of a spectral interference signal. Performance advantage of the TDODL-based method over the conventional approach where only one side (positive or negative path length difference) is used for imaging to avoid overlaying mirror artifacts is confirmed by the measured envelopes of spectral interference signal. Feasibility of the proposed method for full-range imaging is validated in a custom-built SS-OCT system by in vivo imaging of a biological sample.

Paper Details

Date Published: 1 December 2011
PDF: 7 pages
J. Biomed. Opt. 16(12) 126008 doi: 10.1117/1.3662450
Published in: Journal of Biomedical Optics Volume 16, Issue 12
Show Author Affiliations
Tong Wu, Zhejiang Univ. (China)
Zhihua Ding, Zhejiang Univ. (China)
Chuan Wang, Zhejiang Univ. (China)
Minghui Chen, Zhejiang Univ. (China)


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