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Proceedings Article

Analysis of the signal fall-off in spectral domain optical coherence tomography systems

[+] Author Affiliations
M. Hagen-Eggert

Medical Laser Ctr. Lübeck (Germany) and Univ. of Lübeck (USA)

P. Koch

Thorlabs GmbH (Germany)

G. Hüttmann

Univ. of Lübeck (Germany)

Proc. SPIE 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI, 82131K (February 9, 2012); doi:10.1117/12.910921
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From Conference Volume 8213

  • Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI
  • Joseph A. Izatt; James G. Fujimoto; Valery V. Tuchin
  • San Francisco, California, USA | January 21, 2012

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.

© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

M. Hagen-Eggert ; P. Koch and G. Hüttmann
"Analysis of the signal fall-off in spectral domain optical coherence tomography systems", Proc. SPIE 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI, 82131K (February 9, 2012); doi:10.1117/12.910921; http://dx.doi.org/10.1117/12.910921


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