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Proceedings Paper

Analysis of the signal fall-off in spectral domain optical coherence tomography systems
Author(s): M. Hagen-Eggert; P. Koch; G. Hüttmann
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Paper Abstract

The influence of the individual spectrometer components on the depth dependent sensitivity fall-off (roll-off) in spectral-domain optical coherence tomography (SD-OCT) is investigated. We present a method for the characterization of the roll-off in SD-OCT systems via modulation transfer function (MTF) analysis. The MTF of different image sensors was measured in a newly developed setup, which uses the interference of two coherent light beams. Different contributions, i.e. diffraction, aberrations and sampling effects, to the MTF of a spectrometer of commercially available SD-OCT systems is calculated and is compared with roll-off measurements. The difference was below -2 dB at 90 % of the maximum measurement depth.

Paper Details

Date Published: 1 February 2012
PDF: 7 pages
Proc. SPIE 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI, 82131K (1 February 2012); doi: 10.1117/12.910921
Show Author Affiliations
M. Hagen-Eggert, Medical Laser Ctr. Lübeck (Germany)
Univ. of Lübeck (United States)
P. Koch, Thorlabs GmbH (Germany)
G. Hüttmann, Univ. of Lübeck (Germany)

Published in SPIE Proceedings Vol. 8213:
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI
Joseph A. Izatt; James G. Fujimoto; Valery V. Tuchin, Editor(s)

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