Soliton dynamics in passively mode-locked fiber lasers
Date of Issue2006
School of Electrical and Electronic Engineering
Due to their compact structure, convenient collimation, flexible design, and improving pulse intensity, fiber lasers have attracted more and more attentions as a simple inexpensive ultrashort pulse source in many scientific fundamental researches and various applications. This thesis presents a comprehensively experimental and theoretical study of nonlinear dynamics of the passively mode-locked fiber lasers. It is shown numerically that the formation of multiple solitons in the lasers is caused by a peak power limiting effect of the laser cavity. And the soliton energy quantization observed is a natural consequence of the gain competition between the multiple solitons. Multi-pulse solitons were observed in a dispersion-managed fiber laser. For the first time, we have observed soliton period-doubling bifurcations and complete period-doubling route to chaos in the fiber lasers. Noise-like pulse emission was also revealed. A self-started high-repetition-rate soliton fiber laser that could generate 100GHz soliton pulse train is built up.
DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
Nanyang Technological University