Period-doubling bifurcation of dissipative-soliton-resonance pulses in a passively mode-locked fiber laser

TL;DR

This paper experimentally demonstrates period-doubling bifurcation in dissipative-soliton-resonance pulses within a passively mode-locked fiber laser, revealing stable pulse transformations with potential implications for laser dynamics control.

Contribution

It reports the first experimental observation of period-doubling bifurcation of DSR pulses in a fiber laser using a nonlinear optical loop mirror, expanding understanding of laser pulse dynamics.

Findings

Period-doubling transition observed with increased pump power.

DSR pulses maintain fixed peak power in the bifurcation state.

Pulse width varies linearly with pump power in the bifurcation state.

Abstract

We report on the experimental observation of period-doubling bifurcation of dissipative-soliton-resonance (DSR) pulses in a fiber laser passively mode-locked by using the nonlinear optical loop mirror. Increasing the pump power of the fiber laser, we show that temporally a stable, uniform DSR pulse train could be transformed into a period-doubling state, exhibiting two sets of pulse parameters between the adjacent cavity roundtrip. It is found that DSR pulses in the period-doubling state could maintain the typical feature of DSR pulse: fixed pulse peak power and linear variation in pulse width with respect to the pump power change. The mechanism for achieving period-doubling of DSR pulses is discussed.