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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 2 — Jan. 15, 2009
  • pp: 148–150

Reduction of self-phase modulation in double-clad photonic crystal fiber for nonlinear optical endoscopy

Hongchun Bao and Min Gu  »View Author Affiliations

Optics Letters, Vol. 34, Issue 2, pp. 148-150 (2009)

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Double-clad photonic crystal fiber and double-clad fiber have been widely used in multiphoton-excited fluorescence or second-harmonic generation (SHG) endoscopy. We provide a useful comparison of two fibers used in nonlinear optical microendoscopy. While a double-clad fiber is found to have a higher percentage of the output power from its core, which results in the efficient utilization of the power of the excitation laser, a double-clad photonic crystal fiber has a higher threshold of the nonlinearity, which effectively reduces the self-modulation effect and thus leads to a higher degree of polarization of the excitation beam. Consequently, the use of the double-clad photonic crystal fiber facilitates bright two-photon fluorescence imaging as well as polarized SHG imaging.

© 2009 Optical Society of America

OCIS Codes
(110.2350) Imaging systems : Fiber optics imaging
(170.2150) Medical optics and biotechnology : Endoscopic imaging
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(180.4315) Microscopy : Nonlinear microscopy

ToC Category:

Original Manuscript: November 13, 2008
Manuscript Accepted: November 19, 2008
Published: January 13, 2009

Virtual Issues
Vol. 4, Iss. 3 Virtual Journal for Biomedical Optics

Hongchun Bao and Min Gu, "Reduction of self-phase modulation in double-clad photonic crystal fiber for nonlinear optical endoscopy," Opt. Lett. 34, 148-150 (2009)

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