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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 3 — Feb. 7, 2005
  • pp: 957–967

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

Marinko V. Sarunic, Michael A. Choma, Changhuei Yang, and Joseph A. Izatt  »View Author Affiliations


Optics Express, Vol. 13, Issue 3, pp. 957-967 (2005)
http://dx.doi.org/10.1364/OPEX.13.000957


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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 3×3 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 3×3 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.

© 2005 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology

ToC Category:
Research Papers

History
Original Manuscript: December 2, 2004
Revised Manuscript: January 28, 2005
Published: February 7, 2005

Citation
Marinko Sarunic, Michael A. Choma, Changhuei Yang, and Joseph A. Izatt, "Instantaneous complex conjugate resolved spectral domain and swept-source OCT using 3x3 fiber couplers," Opt. Express 13, 957-967 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-3-957


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References

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