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Instantaneous complex spectral domain OCT using 3x3 fiber couplers

Sarunic, Marinko V. and Choma, Michael A. and Yang, Changhuei and Izatt, Joseph A. (2004) Instantaneous complex spectral domain OCT using 3x3 fiber couplers. In: Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII. Proceedings of SPIE. No.5316. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 241-247. ISBN 0819452246.

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We report that the complex conjugate ambiguity in spectral domain OCT approaches (including swept source OCT and Fourier-domain OCT) may be removed by the use of novel interferometer designs based on NxN couplers. An interferometer based on a 3x3 truly fused fiber coupler with equal splitting ratios provides simultaneous access to components of the complex interferometric signal separated by 120o. These phase components may be converted to quadrature components by use of a simple trigonometric operation, and then inverse Fourier transformed to obtain A-scans and images free of complex conjugate artifact. We demonstrate instantaneous complex spectral-domain OCT using a novel Fourier-domain OCT system employing photodiode arrays, and will also report on a similar system design for instantaneous complex swept-source OCT.

Item Type:Book Section
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Yang, Changhuei0000-0001-8791-0354
Additional Information:© 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). Funding for this project was generously donated by the NIH grant #R24 EB00043.
Funding AgencyGrant Number
NIHR24 EB00043
Subject Keywords:spectral domain optical coherence tomography
Series Name:Proceedings of SPIE
Issue or Number:5316
Record Number:CaltechAUTHORS:20180716-162933494
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Official Citation:Marinko V. Sarunic, Michael A. Choma, Changhuei Yang, Joseph A. Izatt, "Instantaneous complex spectral domain OCT using 3x3 fiber couplers", Proc. SPIE 5316, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII, (1 July 2004); doi: 10.1117/12.531422;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87900
Deposited By: George Porter
Deposited On:17 Jul 2018 15:34
Last Modified:16 Nov 2021 00:21

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