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Proceedings Paper

Analysis of speckle in optical coherence tomography
Author(s): Yuan An; Jianquan Yao; Ruikang K. Wang
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Paper Abstract

An analysis has been developed based on former theory analysis and a new deduction about the forming of speckles is given. The popular theories believe that the speckle of OCT image comes from the multiple scattering effect, which distorts the wave-front of light then the speckle induced. By the principle of scattering, least-scattered light still maintains coherent, whereas multiply scattered light will lose coherence for the reason ofdepolarization, phase shift and dispersion. So mostly the least scattered light contributes the amplitude of the detected coherence envelope. The speckle comes from the superposition of several coherence envelopes.

Paper Details

Date Published: 12 September 2002
PDF: 6 pages
Proc. SPIE 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment, (12 September 2002); doi: 10.1117/12.482968
Show Author Affiliations
Yuan An, Tianjin Univ. and Huazhong Univ. of Science and Technology (China)
Jianquan Yao, Tianjin Univ. and Huazhong Univ. of Science and Technology (China)
Ruikang K. Wang, Tianjin Univ. and Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 4916:
Optics in Health Care and Biomedical Optics: Diagnostics and Treatment
Britton Chance; Mingzhe Chen; Gilwon Yoon, Editor(s)

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