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Proceedings Paper

Multiple-reference-light low-coherence interferometer
Author(s): Yan Zhang; Manabu Sato; Naohiro Tanno
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Paper Abstract

Optical coherence tomography (OCT) is a powerful technique for imaging the random scattering medium. Resolution improvement is an important task in the OCT. A novel low coherence interferometer (LCI) in which three reference mirrors are used to generate reference lights is proposed for obtaining higher resolution. The output signal of this LCI is a superposition of interference of signal light with three reference lights. Through adjusting the relative intensities of reference lights, the width of the axial point spread function for the LCI can be reduced, then the resolution of the LCI will be improved. The influence of fluctuations of wavelength and mirror separation on the resolution improvement are investigated. It is expected that this new approach may provide an effective and useful technique for optical measurement.

Paper Details

Date Published: 9 October 2000
PDF: 6 pages
Proc. SPIE 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications, (9 October 2000); doi: 10.1117/12.402585
Show Author Affiliations
Yan Zhang, Yamagata Univ. (Hong Kong)
Manabu Sato, Yamagata Univ. (Japan)
Naohiro Tanno, Yamagata Univ. (Japan)

Published in SPIE Proceedings Vol. 4221:
Optical Measurement and Nondestructive Testing: Techniques and Applications
FeiJun Song; Frank Chen; Michael Y.Y. Hung; H.M. Shang, Editor(s)

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