Publication detail

Gabor fusion technique in a Talbot bands optical coherence tomography system

BOUCHAL, P. BRADU, A. PODOLEANU, A.

Original Title

Gabor fusion technique in a Talbot bands optical coherence tomography system

Type

journal article in Web of Science

Language

English

Original Abstract

In this paper we show how to advantageously combine two effects to enhance the sensitivity with depth in Fourier domain (FD) optical coherence tomography (OCT): Talbot bands (TB) and Gabor-based fusion (GF) technique. TB operation is achieved by routing the two beams, from the object arm and from the reference arm in the OCT interferometer, along parallel separate paths towards the spectrometer. By adjusting the lateral gap between the two beams in their way towards the spectrometer, the position for the maximum of contrast variation of spectral modulation versus the optical path difference in the interferometer is adjusted. For five values of the focus position, the gap between the two beams is readjusted to reach maximum sensitivity. Then, similar to the procedure employed in the GF technique, a compound image is formed by stitching together the parts of the five images that exhibited maximum brightness. The smaller the diameters of the two beams, the narrower the visibility profile versus depth in Talbot bands, which brings advantages in terms of mirror terms attenuation. However, this leads to a larger spot on the linear camera, which introduces losses, therefore the combined procedure, TB/GF is investigated for four different values of the beam diameters of the two beams. Future cameras with larger pixel size may take full advantage of the TB/GF procedure proposed here.

Keywords

Optical coherence tomography; Medical optics instrumentation; Adaptive imaging

Authors

BOUCHAL, P.; BRADU, A.; PODOLEANU, A.

RIV year

2012

Released

21. 2. 2012

Publisher

OPTICAL SOC AMER

Location

MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA

ISBN

1094-4087

Periodical

OPTICS EXPRESS

Year of study

20

Number

5

State

United States of America

Pages from

5368

Pages to

5383

Pages count

16

URL

http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-5-5368&origin=search

BibTex

@article{BUT99006,
  author="Petr {Bouchal} and Adrian {Bradu} and Adrian {Podoleanu}",
  title="Gabor fusion technique in a Talbot bands optical coherence tomography system",
  journal="OPTICS EXPRESS",
  year="2012",
  volume="20",
  number="5",
  pages="5368--5383",
  issn="1094-4087",
  url="http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-5-5368&origin=search"
}