Spectroscopic OCT by Grating-Based Temporal Correlation Coupled to Optical Spectral Analysis. (23rd December 2007)

• Record Type: Journal Article
• Authors: Froehly, L.; Ouadour, M.; Furfaro, L.; Sandoz, P.; Leproux, P.; Huss, G.; Couderc, V.
• Other Names: Gu Min Academic Editor.
• Is Part Of: International journal of biomedical imaging. Volume 2008(2008)
• Publication Date: 2007-12-23
• Subjects: Diagnostic imaging -- Periodicals; Imaging systems in medicine -- Periodicals; Imagerie pour le diagnostic; Imagerie médicale; Diagnostic imaging; Imaging systems in medicine; Diagnostic Imaging -- Periodicals; Electronic journals; Periodicals; 616.0754
• DOI: 10.1155/2008/752340
• Languages: English
• ISSNs: 1687-4188

Abstract

Abstract : Spectroscopic optical coherence tomography (spectroscopic OCT) is an echographic-like optical method for biomedical functional imaging. Current spectroscopic optical coherence tomography (OCT) methods rely on a posteriori numerical calculation. We present an alternative for optically accessing the spectroscopic information in OCT, that is, without postprocessing, by using a grating-based correlation and a wavelength demultiplexing system. Spectrally resolved A-scan is directly recorded on the image sensor. Due to the grating-based system, no correlation scan is necessary. The signal is registered in the wavelength-depth plane on a 2D camera that provides a large number of resolved points. In the frame of this paper, we present the principle of the system as well as demonstration results. Advantages and drawback of this system compared to others are discussed.