Nonlinear Compression of Besselon Waves for High Repetition-Rate Subpicosecond Pulse Trains

Anastasiia Sheveleva (1) , Christophe Finot (1)

1 ICB - Laboratoire Interdisciplinaire Carnot de Bourgogne

We theoretically and experimentally demonstrate the generation of high-quality low duty-cycle pulse trains at repetition rates of 28 GHz, 56 GHz and 112 GHz. Starting from a continuous wave we benefit from phase modulations in the temporal and spectral domains by applying a sinusoidal profile and a set of well-chosen  shifts, respectively, to generate a train of modified besselons at doubled repetition rate. With further nonlinear spectral expansion in a normally dispersive fiber followed by dispersion compensation we achieve subpicosecond durations and a duty cycle as low as 0.025 at 28 GHz. Spectral cancelation of one component over two or four enables to further double or quadruple the repetition rate.

Mots clés: High repetition-rate sources; subpicosecond pulses; phase modulation; ultrafast processing; nonlinear fiber optics

Domaines: Optique [physics.optics]

Anastasiia Sheveleva, Christophe Finot. Nonlinear Compression of Besselon Waves for High Repetition-Rate Subpicosecond Pulse Trains. IEEE Photonics Technology Letters, 2020, 32 (23), pp.1493-1496. ⟨10.1109/LPT.2020.3037786⟩. ⟨hal-02977777⟩