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Title

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

Author(s)

Bao, H. C.;  Gu, Min

Abstract

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.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics

Source

Optics Letters, Vol. 34, no. 2 (Jan 2009), pp. 148-150

Publication year

2009

Keyword(s)

Double-clad fiber;  Double-clad photonic crystal fiber;  Optical endoscopy;  Self-modulation

Publisher

Optical Society of America

ISSN

0146-9592

Publisher URL

http://dx.doi.org/10.1364/OL.34.000148

Copyright

Copyright © 2009 Optical Society of America. Published version of the paper reproduced here in accordance with the copyright policy of the publisher. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.34.000148. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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