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Proceedings Paper

Passive mode-locking using multi-mode fiber
Author(s): Edwin Ding; Simon Lefrançois; J. Nathan Kutz; Frank W. Wise
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Paper Abstract

The mode-locking of dissipative soliton fiber lasers using large mode area fiber supporting multiple transverse modes is studied experimentally and theoretically. Experiments using large core step-index fiber, photonic crystal fiber, and chirally-coupled core fiber show that when the higher order mode content exceeds -27 dB, the maximum stable single-pulse energy is significantly reduced. The averaged mode-locking dynamics in a multi-mode fiber are studied using a distributed model. The co-propagation of multiple transverse modes is governed by a system of coupled Ginzburg-Landau equations (CGLEs). Simulations show that stable and robust mode-locked pulses can be produced. The maximum stable single pulse energy is found to increase with higher order mode filtering. This work demonstrates that mode-locking performance is very sensitive to the presence of multiple waveguide modes when compared to systems such as amplifiers and continuous-wave lasers, and gives a quantitative estimate of what constitutes effectively single-mode operation. Robust, distributed higher order mode filtering is necessary to maximize single-pulsing energy.

Paper Details

Date Published: 10 February 2011
PDF: 14 pages
Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 79141K (10 February 2011); doi: 10.1117/12.873866
Show Author Affiliations
Edwin Ding, Univ. of Washington (United States)
Simon Lefrançois, Cornell Univ. (United States)
J. Nathan Kutz, Univ. of Washington (United States)
Frank W. Wise, Cornell Univ. (United States)

Published in SPIE Proceedings Vol. 7914:
Fiber Lasers VIII: Technology, Systems, and Applications
Jay W. Dawson, Editor(s)

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