Postprocessing algorithms to minimize fixedpattern artifact and reduce trigger jitter in swept source optical coherence tomography

Gangjun Liu, Ou Tan, Simon S. Gao, Alex D. Pechauer, Byung Kun Lee, Chen D. Lu, James G. Fujimoto, David Huang

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

We propose methods to align interferograms affected by trigger jitter to a reference interferogram based on the information (amplitude/phase) at a fixed-pattern noise location to reduce residual fixedpattern noise and improve the phase stability of swept source optical coherence tomography (SS-OCT) systems. One proposed method achieved this by introducing a wavenumber shift (k-shift) in the interferograms of interest and searching for the k-shift that minimized the fixed-pattern noise amplitude. The other method calculated the relative k-shift using the phase information at the residual fixed-pattern noise location. Repeating this wavenumber alignment procedure for all A-lines of interest produced fixedpattern noise free and phase stable OCT images. A system incorporating these correction routines was used for human retina OCT and Doppler OCT imaging. The results from the two methods were compared, and it was found that the intensity-based method provided better results.

Original languageEnglish (US)
Pages (from-to)9824-9834
Number of pages11
JournalOptics express
Volume23
Issue number8
DOIs
StatePublished - 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Postprocessing algorithms to minimize fixedpattern artifact and reduce trigger jitter in swept source optical coherence tomography'. Together they form a unique fingerprint.

  • Cite this