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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 9 — Jul. 6, 2010

Double-clad fiber coupler for endoscopy

Simon Lemire-Renaud, Maxime Rivard, Mathias Strupler, Dominic Morneau, Frédéric Verpillat, Xavier Daxhelet, Nicolas Godbout, and Caroline Boudoux  »View Author Affiliations


Optics Express, Vol. 18, Issue 10, pp. 9755-9764 (2010)
http://dx.doi.org/10.1364/OE.18.009755


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Abstract

We present a double-clad fiber coupler (DCFC) for use in endoscopy to reduce speckle contrast, increase signal collection and depth of field. The DCFC is made by fusing and tapering two all silica double-clad fiber (DCF) and allows achromatic transmission of >95% of core illumination (1265nm – 1325nm) as well as collection of >42% of inner cladding diffuse light. Its potential for endoscopy is demonstrated in a spectrally encoded imaging setup which shows speckle reduction by a factor 5, increased signal collection by a factor 9 and enhanced depth of field by 1.8 times. Separation by the DCFC of single- and multi-mode signals allows combining low-speckle reflectance images (25.5 fps) with interferometrically measured depth profiles (post-processed) for of small three-dimensional (3D) features through an all-fiber low loss instrument.

© 2010 OSA

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(110.1650) Imaging systems : Coherence imaging
(170.2150) Medical optics and biotechnology : Endoscopic imaging
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.6900) Medical optics and biotechnology : Three-dimensional microscopy

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: March 8, 2010
Revised Manuscript: April 17, 2010
Manuscript Accepted: April 18, 2010
Published: April 26, 2010

Virtual Issues
Vol. 5, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Simon Lemire-Renaud, Maxime Rivard, Mathias Strupler, Dominic Morneau, Frédéric Verpillat, Xavier Daxhelet, Nicolas Godbout, and Caroline Boudoux, "Double-clad fiber coupler for endoscopy," Opt. Express 18, 9755-9764 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-18-10-9755


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