Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published July 1, 2004 | Published
Book Section - Chapter Open

Instantaneous complex spectral domain OCT using 3x3 fiber couplers

Abstract

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.

Additional Information

© 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). Funding for this project was generously donated by the NIH grant #R24 EB00043.

Attached Files

Published - 241.pdf

Files

241.pdf
Files (666.2 kB)
Name Size Download all
md5:f803dc9dcf40e62a56f3949ae9f153d8
666.2 kB Preview Download

Additional details

Created:
August 19, 2023
Modified:
January 14, 2024