Analysis of speckle in optical coherence tomography

Yuan An; Jianquan Yao; Ruikang K. Wang

doi:10.1117/12.482968

12 September 2002 Analysis of speckle in optical coherence tomography

Yuan An, Jianquan Yao, Ruikang K. Wang

Proceedings Volume 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment; (2002) https://doi.org/10.1117/12.482968
Event: Photonics Asia, 2002, Shanghai, China

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.

Citation Download Citation

Yuan An, Jianquan Yao, and Ruikang K. Wang "Analysis of speckle in optical coherence tomography", Proc. SPIE 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment, (12 September 2002); https://doi.org/10.1117/12.482968

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