High-Energy Passive Mode-Locking of Fiber Lasers

Figure 7

Numerical simulations of the full discrete governing system ((a) and (b), recall that |𝜓|²=|𝑢|²+|𝑣|²) and the SGLE ((c) and (d)) at different gain values 𝑔₀ in the anomalous dispersion regime. (a) and (c) Stable single-pulse evolution starting from white noise at 𝑔₀=1. (b) and (d) The initial white noise quickly evolves into two identical pulses per cavity round trip at 𝑔₀=2.7. The rest of the parameters in the simulations are 𝐷=0.4, 𝛼₁=0, 𝛼₂=0.82𝜋, 𝛼₃=0.1𝜋, 𝛼_𝑝=0.45𝜋, 𝐾=0.1, Γ=0.1, 𝑒₀=1, and 𝜏=0.1(from [29], 2011, IEEE).

(a)

(b)

(c)

(d)