Ghost reduction in CP-SSOCT having multiple references using Fourier-domain shift and sum

Gyeong Woo Cheon, Peter L. Gehlbach, Jin U. Kang

Research output: Contribution to journalArticlepeer-review


We propose, test, and validate a novel Fourier-domain-based method for ghost image artifacts reduction in a common-path SSOCT system having multiple adjacent reference planes. Common-path probes with imaging systems containing high-index sapphire ball or other lenses produce multiple fixed references due to Fresnel reflections from the lens surfaces. The multiple reference planes produce multiple and overlapping optical coherence tomography (OCT) images. Since such ghost artifacts are the result of the superposition of multiple identical images having different amplitudes and spatial shifts, one can correctly shift and sum the images in the Fourier-domain once the relative amplitude and lateral position between the reference planes are known. This theory and numerical testing are presented to elucidate our method. We then validate the potential effectiveness using OCT imaging experiments.

Original languageEnglish (US)
Article number7491223
Pages (from-to)1972-1975
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number18
StatePublished - Sep 15 2016


  • Optical fiber sensors
  • biomedical optical imaging
  • optical signal detection
  • optical signal processing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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