Share Email Print
cover

Proceedings Paper

Optical amplification of the signal and sensitivity of the ultrafast spectral domain optical coherence tomography at an A-scan rate of 10MHz in a wavelength region of 1300nm
Author(s): D. Choi; H. Hiro-oka; K. Shimizu; K. Ohbayashi
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We report on detailed characterization of a newly developed ultra-high speed optical coherence tomography (OCT) system using arrayed wave guide at 1.3 μm. An axial resolution of 27 μm, a depth range of 3.98 mm, and a detection speed of 2.5 or 10 MHz axial scan per second have been achieved. We also discuss the effectiveness of a semiconductor optical amplifier (SOA) in the system. The system sensitivity without SOA was about 78 dB, which is far less than the shot-noise-limited sensitivity because of relative intensity noise and loss of optical intensity in the system. To improve the low sensitivity, we used the SOA in the system and achieved a sensitivity of 94 dB with a probe power of 10 mW, which allowed us good imaging quality in biomedical applications. The OCT system is also capable to display a volumetric tomography continuously in real time by using field programmable gate arrays (FPGA) and general purpose graphical processing unit (GPGPU) for high-speed parallel data processing. We present several tissue images such as human finger skin, finger near nail and extracted trachea of a pig.

Paper Details

Date Published: 30 January 2012
PDF: 9 pages
Proc. SPIE 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI, 82131F (30 January 2012); doi: 10.1117/12.906536
Show Author Affiliations
D. Choi, Kitasato Univ. (Japan)
H. Hiro-oka, Kitasato Univ. (Japan)
K. Shimizu, Kitasato Univ. (Japan)
K. Ohbayashi, Kitasato Univ. School of Medicine (Japan)


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)

© SPIE. Terms of Use
Back to Top