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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 2, Iss. 11 — Nov. 1, 2011
  • pp: 2961–2972

Double-clad fiber with a tapered end for confocal endomicroscopy

Simon Lemire-Renaud, Mathias Strupler, Fouzi Benboujja, Nicolas Godbout, and Caroline Boudoux  »View Author Affiliations


Biomedical Optics Express, Vol. 2, Issue 11, pp. 2961-2972 (2011)
http://dx.doi.org/10.1364/BOE.2.002961


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Abstract

We present a double-clad fiber coupler (DCFC) for use in confocal endomicroscopy to reduce speckle contrast, increase signal collection while preserving optical sectioning. The DCFC is made by incorporating a double-clad tapered fiber (DCTF) to a fused-tapered DCFC for achromatic transmission (from 1265 nm to 1325 nm) of > 95% illumination light trough the single mode (SM) core and collection of > 40% diffuse light through inner cladding modes. Its potential for confocal endomicroscopy is demonstrated in a spectrally-encoded imaging setup which shows a 3 times reduction in speckle contrast as well as 5.5 × increase in signal collection compared to imaging with a SM fiber.

© 2011 OSA

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(060.2340) Fiber optics and optical communications : Fiber optics components
(110.2990) Imaging systems : Image formation theory
(170.1790) Medical optics and biotechnology : Confocal microscopy
(170.2150) Medical optics and biotechnology : Endoscopic imaging

ToC Category:
Endoscopes, Catheters and Micro-Optics

History
Original Manuscript: July 5, 2011
Revised Manuscript: August 10, 2011
Manuscript Accepted: August 25, 2011
Published: October 3, 2011

Citation
Simon Lemire-Renaud, Mathias Strupler, Fouzi Benboujja, Nicolas Godbout, and Caroline Boudoux, "Double-clad fiber with a tapered end for confocal endomicroscopy," Biomed. Opt. Express 2, 2961-2972 (2011)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-2-11-2961


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