Passive mode-locking using multi-mode fiber

Edwin Ding; Simon Lefrançois; J. Nathan Kutz; Frank W. Wise

doi:10.1117/12.873866

10 February 2011 Passive mode-locking using multi-mode fiber

Edwin Ding, Simon Lefrançois, J. Nathan Kutz, Frank W. Wise

Proceedings Volume 7914, Fiber Lasers VIII: Technology, Systems, and Applications; 79141K (2011) https://doi.org/10.1117/12.873866
Event: SPIE LASE, 2011, San Francisco, California, United States

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.

Citation Download Citation

Edwin Ding, Simon Lefrançois, J. Nathan Kutz, and Frank W. Wise "Passive mode-locking using multi-mode fiber", Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 79141K (10 February 2011); https://doi.org/10.1117/12.873866

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