Instantaneous complex spectral domain OCT using 3 × 3 fiber couplers
Published
Journal Article
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 N×N couplers. An interferometer based on a 3 × 3 truly fused fiber coupler with equal splitting ratios provides simultaneous access to components of the complex interferometric signal separated by 120°. 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.
Full Text
Duke Authors
Cited Authors
- Sarunic, MV; Choma, MA; Yang, C; Izatt, JA
Published Date
- October 27, 2004
Published In
Volume / Issue
- 5316 /
Start / End Page
- 241 - 247
International Standard Serial Number (ISSN)
- 0277-786X
Digital Object Identifier (DOI)
- 10.1117/12.531422
Citation Source
- Scopus