Complex conjugate removal in ss optical coherence tomography


Book Section

© Springer-Verlag Berlin Heidelberg 2008 and Springer International Publishing Switzerland 2015. The development of Fourier Domain OCT (FDOCT) systems significantly improved sensitivity and imaging speed and catalyzed the commercialization of OCT technology. However, the transition from time-domain to Fourier domain was not without cost. The complex conjugate ambiguity is a non-trivial artifact resulting from direct Fourier detection in FDOCT. While most FDOCT systems avoid this artifact by limiting their axial imaging range, complex conjugate removal (CCR) in swept-source OCT (SSOCT) seeks to suppress or eliminate the complex conjugate ambiguity. CCR for SSOCT, either by phase-shifting, heterodyning, or optical demodulation, increases the axial imaging range by a factor of 2 compared to conventional FDOCT. This technological development is important in many OCT applications, including ophthalmology since the increased imaging depth is necessary to visualize the entire anterior segment of the human eye.

Full Text

Duke Authors

Cited Authors

  • Carrasco-Zevallos, O; Izatt, JA

Published Date

  • January 1, 2015

Book Title

  • Optical Coherence Tomography: Technology and Applications, Second Edition

Start / End Page

  • 255 - 276

International Standard Book Number 13 (ISBN-13)

  • 9783319064185

Digital Object Identifier (DOI)

  • 10.1007/978-3-319-06419-2_8

Citation Source

  • Scopus