Optimal interferometer designs for optical coherence tomography.


Journal Article

We introduce a family of power-conserving fiber-optic interferometer designs for low-coherence reflectometry that use optical circulators, unbalanced couplers, and (or) balanced heterodyne detection. Simple design equations for optimization of the signal-to-noise ratio of the interferometers are expressed in terms of relevant signal and noise sources and measurable system parameters. We use the equations to evaluate the expected performance of the new configurations compared with that of the standard Michelson interferometer that is commonly used in optical coherence tomography (OCT) systems. The analysis indicates that improved sensitivity is expected for all the new interferometer designs, compared with the sensitivity of the standard OCT interferometer, under high-speed imaging conditions.

Full Text

Duke Authors

Cited Authors

  • Rollins, AM; Izatt, JA

Published Date

  • November 1999

Published In

Volume / Issue

  • 24 / 21

Start / End Page

  • 1484 - 1486

PubMed ID

  • 18079840

Pubmed Central ID

  • 18079840

Electronic International Standard Serial Number (EISSN)

  • 1539-4794

International Standard Serial Number (ISSN)

  • 0146-9592

Digital Object Identifier (DOI)

  • 10.1364/ol.24.001484


  • eng