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Proceedings Paper

Evaluation of the signal noise ratio enhancement of SS-OCT versus TD-OCT using a full field interferometer
Author(s): Jingyu Wang; Mark Hathaway; Vladimir Shidlovski; Christopher Dainty; Adrian Podoleanu
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Paper Abstract

Comparative evaluation of signal-to-noise ratio (SNR) is presented using a Full-field (FF)-OCT configuration, which is adapted to work in either Swept-Source (SS)-Full-field OCT or Time Domain (TD)-Full-field OCT regime. We implement the two regimes in the same set-up, using the same CCD camera and the same samples. We describe the experimental set-up and the procedure implemented to verify the theory which says that Spectral Domain (SD)-OCT is superior to TD-OCT. A simple theoretical analysis of the signal-to-noise ratio is presented to evaluate the improvement from TD-OCT to SD-OCT in FF configuration. Experimental results demonstrate that the SNR is indeed better in the SS-OCT regime, however not to the level predicted by theory. More work is required to understand why the experimental set-up does not achieve the improvement predicted by theory. We also show how to perform the measurements and imaging in the two regimes of operation. The system can deliver B-Scan OCT images in the SS-OCT regime and C-scan OCT images in the TD-OCT regime.

Paper Details

Date Published: 20 February 2009
PDF: 6 pages
Proc. SPIE 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII, 71682K (20 February 2009); doi: 10.1117/12.809043
Show Author Affiliations
Jingyu Wang, Univ. of Kent (United Kingdom)
Mark Hathaway, Ophthalmic Technologies Inc. (United Kingdom)
Vladimir Shidlovski, Superlum Diodes (Russian Federation)
Christopher Dainty, National Univ. of Ireland, Galway (Ireland)
Adrian Podoleanu, Univ. of Kent (United Kingdom)

Published in SPIE Proceedings Vol. 7168:
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII
James G. Fujimoto; Joseph A. Izatt; Valery V. Tuchin, Editor(s)

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