Open AccessImpact of initial pulse characteristics on the mitigation of self-phase modulation by sinusoidally time varying phase
Author(s) -
Sonia Boscolo,
Frédéric Audo,
Christophe Finot
Publication year - 2018
Publication title -
hal (le centre pour la communication scientifique directe)
Language(s) - English
DOI - 10.1007/s1108
Subject(s) - phase (matter) , pulse (music) , modulation (music) , phase modulation , pulse width modulation , self phase modulation , optics , control theory (sociology) , materials science , acoustics , physics , computer science , power (physics) , nonlinear optics , artificial intelligence , laser , control (management) , quantum mechanics , detector
International audienceA simple and efficient approach to suppress undesirable self-phase modulation (SPM) of optical pulses propagating in fiber-optic systems is based on imposing a sinusoidal temporal phase modulation on the pulses to offset the chirp generated by SPM (Audo et al. 2017). Here, we present a detailed analysis of this method. We derive an exact formula for the reduction of the SPM-induced rms spectrum broadening of an initially Gaussian pulse enabled by the sinusoidal compensation, and we assess the effects of the initial pulse shape and duration on the effectiveness of the technique by means of numerical simulation. The differences between pre-and post-propagation compensation schemes are also discussed