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Proceedings Paper

MEMS motor-based common-path endoscopic Fourier-domain OCT
Author(s): Rui Wang; Julie X. Yun; Xiaocong Yuan; Bo Li; Richard Goodwin; Roger Markwald; Bruce Gao
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Paper Abstract

A rotational microelectromechanical(MEMS) motor based common-path Fourier-domain OCT for endoscopic imaging, which uses the interface between the index-match oil and distal-end surface of the fiber as a self-aligned reference mirror, is reported. The reference intensity is easy to be tuned by altering the index of the match oil to optimize the signal to noise ratio of the system. An external Michelson interferometer is used to compensate for the optical path difference and dispersion mismatch to the index-match oil and the GRIN lens. Due to this common-path design, the OCT signal is immune to bending or stretching of the endoscopic catheter. The outer diameter of the probe is 3 mm, and 22 circumferential-scans and 50,000 lines A-scans are obtained in one second.

Paper Details

Date Published: 22 February 2011
PDF: 6 pages
Proc. SPIE 7893, Endoscopic Microscopy VI, 78930Z (22 February 2011); doi: 10.1117/12.875322
Show Author Affiliations
Rui Wang, Clemson Univ. (United States)
Julie X. Yun, Clemson Univ. (United States)
Xiaocong Yuan, Clemson Univ. (United States)
Bo Li, Clemson Univ. (United States)
Richard Goodwin, Univ. of South Carolina (United States)
Roger Markwald, Medical Univ. of South Carolina (United States)
Bruce Gao, Clemson Univ. (United States)

Published in SPIE Proceedings Vol. 7893:
Endoscopic Microscopy VI
Guillermo J. Tearney; Thomas D. Wang M.D., Editor(s)

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