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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 10 — May. 15, 2012
  • pp: 1616–1618

Ultrathin fiber probes with extended depth of focus for optical coherence tomography

Dirk Lorenser, Xiaojie Yang, and David D. Sampson  »View Author Affiliations

Optics Letters, Vol. 37, Issue 10, pp. 1616-1618 (2012)

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We report on a novel scheme for extending the depth of focus (DOF) of ultrathin (125 μm diameter) fiber probes for optical coherence tomography (OCT) using a simple phase mask consisting of graded-index (GRIN) fiber. The technique is compatible with existing all-in-fiber probe fabrication techniques, and our simulations show that it can provide a DOF gain of 2 at a modest 5dB reduction of peak sensitivity. In a prototype device using commercially available GRIN fiber, a DOF gain of 1.55 is obtained, validated by beam profiling and OCT imaging.

© 2012 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(170.2150) Medical optics and biotechnology : Endoscopic imaging
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: February 20, 2012
Manuscript Accepted: March 12, 2012
Published: May 7, 2012

Virtual Issues
Vol. 7, Iss. 7 Virtual Journal for Biomedical Optics
August 3, 2012 Spotlight on Optics

Dirk Lorenser, Xiaojie Yang, and David D. Sampson, "Ultrathin fiber probes with extended depth of focus for optical coherence tomography," Opt. Lett. 37, 1616-1618 (2012)

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