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Proceedings Paper

Common path endoscopic optical coherence tomography with outside path length compensation
Author(s): Yaliang Yang; Zhihua Ding; Jie Meng; Lan Wu; Zi’ang He; Tong Wu; Minghui Chen
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Paper Abstract

Endoscopic optical coherence tomography (OCT) allowing high-resolution imaging of internal tissue is attractive for medical imaging. Fibre, fibre bundle or GRIN lens rod acting as endoscopic probe is placed in the sample arm of a Michelson interferometer in current endoscopic OCT systems, this arrangement has to be carefully configured to avoid dispersion and polarization fading. In this study, a common path OCT system with outside path length compensation is presented. The system based on Fizeau configuration requires a Michelson interferometer to compensate the optical path difference between the reference and signal light in the Fizeau sensing interferometer. Experiments of path length compensation and vibration are conducted, and the results demonstrate that this outside compensation method is feasible and the system is immune to the vibration which occurs at the Fizeau sensing interferometer. This OCT imaging approach is very suitable for endoscopic imaging and detailed endoscopic OCT system is also presented. Several samples were imaged to demonstrate the performance of the proposed OCT system.

Paper Details

Date Published: 8 January 2008
PDF: 6 pages
Proc. SPIE 6826, Optics in Health Care and Biomedical Optics III, 68261S (8 January 2008); doi: 10.1117/12.756901
Show Author Affiliations
Yaliang Yang, Zhejiang Univ. (China)
Zhihua Ding, Zhejiang Univ. (China)
Jie Meng, Zhejiang Univ. (China)
Lan Wu, Zhejiang Univ. (China)
Zi’ang He, Zhejiang Univ. (China)
Tong Wu, Zhejiang Univ. (China)
Minghui Chen, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 6826:
Optics in Health Care and Biomedical Optics III
Xingde Li; Qingming Luo; Ying Gu M.D., Editor(s)

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