Instantaneous frequency chirp imposed by self-phase modulation on a pulse of envelope |A(0,t)|² propagating through fibre of effective length L_eff: δω_SPM(t) = -∂φ_SPM/∂t = -γ·L_eff·d|A|²/dt. For a Gaussian input pulse |A(0,t)|² =…
Instantaneous frequency chirp imposed by self-phase modulation on a pulse of envelope |A(0,t)|² propagating through fibre of effective length L_eff: δω_SPM(t) = -∂φ_SPM/∂t = -γ·L_eff·d|A|²/dt. For a Gaussian input pulse |A(0,t)|² =…