Two-level optical coherence tomography scheme for suppressing spectral saturation artifacts

Chiung Ting Wu, Meng Tsan Tsai, Cheng Kuang Lee*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

13 Scopus citations

Abstract

We demonstrate a novel method for reducing saturation artifacts in spectral-domain optical coherence tomography (SD-OCT) systems. This method is based on a two-level SD-OCT system with a dual-line charge-coupled device (CCD) camera. We compensate the saturated signal detected by the first line using the unsaturated signal detected by the second line. The Fourier transform of the compensated spectrum shows effective suppression of saturation artifacts. This method was also successfully performed on phantom material and skin on a human finger. Our method causes neither back-scattering power loss nor signal-to-noise ratio (SNR) degradation. The only difference between the traditional system and our two-level system is our utilization of the dual-line CCD camera; no additional devices or complex designs are needed.

Original languageEnglish
Pages (from-to)13548-13555
Number of pages8
JournalSensors
Volume14
Issue number8
DOIs
StatePublished - 25 07 2014

Keywords

  • Noise in imaging system
  • OCT
  • Real-time

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