Period-timing bifurcation evolution in a nonlinear polarization rotation fiber laser

Period-timing bifurcation phenomenon widely exists in fiber laser. We investigate the period-timing bifurcation phenomenon in fiber resonator. Large period-timing of single pulse occurs due to mutual competition between dispersive wave and soliton. In addition, period-timing of soliton molecule is observed due to mutual attraction and repulsion between adjacent pulses. Furthermore, local periodic bifurcation has been obtained. All the period-timing bifurcation phenomena are related to many factors such as fiber birefringence, small signal gain, nonlinear effect and dispersion, etc. Exploring period-timing bifurcation is helpful to understand the dynamic evolution of pulse. Period-timing bifurcation has important applications in optical communication system, optical logic operation, all-optical computing and so on.