Toward endoscopes with no distal optics: video-rate scanning microscopy through a fiber bundle

Opt Lett. 2013 Mar 1;38(5):609-11. doi: 10.1364/OL.38.000609.

Abstract

We report a step toward scanning endomicroscopy without distal optics. The focusing of the beam at the distal end of a fiber bundle is achieved by imposing a parabolic phase profile across the exit face with the aid of a spatial light modulator. We achieve video-rate images by galvanometric scanning of the phase tilt at the proximal end. The approach is made possible by the bundle, designed to have very low coupling between cores.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Endoscopes*
  • Microscopy / instrumentation*
  • Optical Fibers*