Photonic generation of picosecond pulse doublets from the nonlinear splitting of super-Gaussian pulses

Christophe Finot,H Michinel,M.F Costa,O Frazao

doi:10.1051/epjconf/202023811012

Abstract

We experimentally demonstrate the generation of temporal pulse doublets from the propagation of initial super-Gaussian waveforms in an optical fiber with anomalous dispersion. The nonlinear focusing dynamics leads to picosecond structures that are characterized both in amplitude and phase. Their close-to-Gaussian Fourier-transform limited shape is found in excellent agreement with numerical simulations. This single-stage reshaping scheme is energy efficient, can sustain GHz repetition rates and temporal compression factors around 10 are demonstrated.

Highlights

Generation of picosecond optical pulse doublets at high repetition rates remains a technological challenge
We introduce a new solution based on the nonlinear propagation of a super-Gaussian pulse in a fiber with anomalous dispersion
The experimental amplitude and phase features are both reproduced closely by numerical simulations of the propagation based on the nonlinear Schrodinger equation taking into account the losses of the fiber and the exact input conditions

Summary

Introduction

Generation of picosecond optical pulse doublets at high repetition rates remains a technological challenge. Nonlinear approaches in optical fibers can be advantageous thanks to the combination of the dispersive and Kerr effects.

Results

Conclusion