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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 14 — Jul. 5, 2010
  • pp: 14375–14384

Forward-viewing resonant fiber-optic scanning endoscope of appropriate scanning speed for 3D OCT imaging

Li Huo, Jiefeng Xi, Yicong Wu, and Xingde Li  »View Author Affiliations


Optics Express, Vol. 18, Issue 14, pp. 14375-14384 (2010)
http://dx.doi.org/10.1364/OE.18.014375


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Abstract

A forward-viewing resonant fiber-optic endoscope of a scanning speed appropriate for a high-speed Fourier-domain optical coherence tomography (FD-OCT) system was developed to enable real-time, three-dimensional endoscopic OCT imaging. A new method was explored to conveniently tune the scanning frequency of a resonant fiber-optic scanner, by properly selecting the fiber-optic cantilever length, partially changing the mechanical property of the cantilever, and adding a weight to the cantilever tip. Systematic analyses indicated the resonant scanning frequency can be tuned over two orders of magnitude spanning from ~10Hz to ~kHz. Such a flexible scanning frequency range makes it possible to set an appropriate scanning speed of the endoscope to match the different A-scan rates of a variety of FD-OCT systems. A 2.4-mm diameter, 62.5-Hz scanning endoscope appropriate to work with a 40-kHz swept-source OCT (SS-OCT) system was developed and demonstrated for 3D OCT imaging of biological tissues.

© 2010 OSA

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(120.5800) Instrumentation, measurement, and metrology : Scanners
(170.3880) Medical optics and biotechnology : Medical and biological imaging

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: May 13, 2010
Revised Manuscript: June 6, 2010
Manuscript Accepted: June 14, 2010
Published: June 21, 2010

Virtual Issues
Vol. 5, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Li Huo, Jiefeng Xi, Yicong Wu, and Xingde Li, "Forward-viewing resonant fiber-optic scanning endoscope of appropriate scanning speed 
for 3D OCT imaging," Opt. Express 18, 14375-14384 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-14-14375


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