Study of hyperchaos resulting from an erbium-doped fibre three-ring laser system

A novel erbium-doped fibre three-ring laser system with a ring-coupled-ring-coupled-ring to obtain dynamic behaviours and develop a theoretical model of a three-ring laser system is presented. Our studies on the dynamic behaviours of an erbium-doped fibre three-ring laser are reported. The fibre laser exhibits hyperchaotic and chaotic behaviours, as well as coexistent scenarios showing routes from period-doubling to chaos, by shifting the pump levels. The results can be used as a reference value for a chaotic emitter and for chaotic laser technology and applications.