Soliton collapse and bunched noise-like pulse generation in a passively mode-locked fiber ring laser

Abstract

A passively mode-locked soliton fiber ring laser with dispersion managed cavity is reported. The laser emits intense bunched noise-like pulses including the transform limited pulses. The optical spectrum of the laser emission has a bandwidth as broad as 32.10 nm. It was found that purely depending on the linear cavity phase delay the laser could be switched between the soliton operation and the noise-like pulse emission. Numerical simulations showed that the laser emission was caused by the combined effect of soliton collapse and positive cavity feedback in the laser.

Dynamics and statistics of noise-like pulses in modelocked lasers

“…[16,17,18,19,20,21,22,23]) we found that only the three systems considered in this paper exhibited NLPs in our simulations. 2 It would also be desirable to make more careful calculations of the bifurcations, including precise continuation to bifurcation points, and calculation of the spectra.…”

Real-Time Intensity Domain Characterization of Fibre Lasers Using Spatio-Temporal Dynamics

“…The stretched pulse operation, together with increased cavity length [60,72], helps in realization of pulse energies much higher than conventional soliton based mode locked lasers. However, higher pulse energies bring about additional nonlinear interactions, resulting in dispersive wave generation [73,74], pulse break up and formation of noisy pulses [75], and even generation of rogue waves [76][77][78][79]. The intrinsic variability of the mode locked regimes gives rise to further diversity of outputs [80].…”

Pulsing Manipulation in a 1.55-<inline-formula> <tex-math notation="LaTeX">$\mu \text{m}$ </tex-math></inline-formula> Mode-Locked Fiber Laser by a 1-<inline-formula> <tex-math notation="LaTeX">$\mu \text{m}$ </tex-math></inline-formula> Optical Pattern

“…The pattern of multipulse inside the cavity, however, is stochastically distributed, e.g. bound solitons [9], bunched soliton [10] [11], and harmonic mode-locking with equal spacing [12] [13]. As far as controllability is concerned, it is very interesting to actively manipulate the distribution of multipulse inside the fiber cavity.…”