Improved signal-to-noise ratio in spectral-domain compared with time-domain optical coherence tomography

Opt Lett. 2003 Nov 1;28(21):2067-9. doi: 10.1364/ol.28.002067.


A signal-to-noise ratio (SNR) analysis is presented for optical coherence tomography (OCT) signals in which time-domain performance is compared with that of the spectral domain. A significant SNR gain of several hundredfold is found for acquisition in the spectral domain. The SNR benefit is demonstrated experimentally in a hybrid time-domain-spectral-domain OCT system.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Artifacts
  • Equipment Design
  • Models, Theoretical
  • Time Factors
  • Tomography, Optical Coherence* / instrumentation