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Instantaneous complex conjugate resolved spectral domain and swept-source OCT using 3x3 fiber couplers

Sarunic, Marinko V. and Choma, Michael A. and Yang, Changhuei and Izatt, Joseph A. (2005) Instantaneous complex conjugate resolved spectral domain and swept-source OCT using 3x3 fiber couplers. Optics Express, 13 (3). pp. 957-967. ISSN 1094-4087. http://resolver.caltech.edu/CaltechAUTHORS:SARoe05

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Abstract

We report that the complex conjugate artifact in Fourier domain optical coherence tomography approaches (including spectral domain and swept source OCT) may be resolved by the use of novel interferometer designs based on 3x3 and higher order fiber couplers. Interferometers built from NxN (N>2) truly fused fiber couplers provide simultaneous access to non-complementary phase components of the complex interferometric signal. These phase components may be converted to quadrature components by trigonometric manipulation, then inverse Fourier transformed to obtain A-scans and images with resolved complex conjugate artifact. We demonstrate instantaneous complex conjugate resolved Fourier domain OCT using 3x3 couplers in both spectral domain and swept source implementations. Complex conjugate artifact suppression by factors of ~20dB and ~25dB are demonstrated for spectral domain and swept source implementations, respectively.


Item Type:Article
Additional Information:© 2005 Optical Society of America Original Manuscript: December 2, 2004; Revised Manuscript: December 2, 2004; Published: February 7, 2005 This work was supported by NIH grants R21 RR019769 and R24-EB00243. The collaboration of K. Hsu and Micron Optics, Inc. is gratefully acknowledged.
Subject Keywords:Optical coherence tomography; Medical optics and biotechnology
Record Number:CaltechAUTHORS:SARoe05
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:SARoe05
Alternative URL:http://www.opticsinfobase.org/abstract.cfm?URI=oe-13-3-957
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3311
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:30 May 2006
Last Modified:26 Dec 2012 08:53

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