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Sensitivity advantage of swept source and Fourier domain optical coherence tomography

Choma, Michael A. and Sarunic, Marinko V. and Yang, Changhuei and Izatt, Joseph A. (2003) Sensitivity advantage of swept source and Fourier domain optical coherence tomography. Optics Express, 11 (18). pp. 2183-2189. ISSN 1094-4087. http://resolver.caltech.edu/CaltechAUTHORS:CHOoe03

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Abstract

We present theoretical and experimental results which demonstrate the superior sensitivity of swept source (SS) and Fourier domain (FD) optical coherence tomography (OCT) techniques over the conventional time domain (TD) approach. We show that SS- and FD-OCT have equivalent expressions for system signal-to-noise ratio which result in a typical sensitivity advantage of 20-30dB over TD-OCT. Experimental verification is provided using two novel spectral discrimination (SD) OCT systems: a differential fiber-based 800nm FD-OCT system which employs deep-well photodiode arrays, and a differential 1300nm SS-OCT system based on a swept laser with an 87nm tuning range.


Item Type:Article
Additional Information:© 2003 Optical Society of America Original Manuscript: July 21, 2003; Revised Manuscript: July 21, 2003; Published: September 8, 2003 Supported by NIH Grant R24-EB000243. Loan of the 1.3 micron swept source from Micron Optics, Inc. as well as fruitful discussions with Kevin Hsu are gratefully acknowledged.
Subject Keywords:Noise in imaging systems; Optical coherence tomography
Record Number:CaltechAUTHORS:CHOoe03
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:CHOoe03
Alternative URL:http://www.opticsinfobase.org/abstract.cfm?URI=oe-11-18-2183
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3312
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:30 May 2006
Last Modified:26 Dec 2012 08:53

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