Thermo-optical "canard orbits" and excitable limit cycles.
We demonstrate experimentally and theoretically the existence of canard orbits and excitable quasiharmonic limit cycles in the thermo-optical dynamics of semiconductor optical amplifiers. We also observe the phase locking of the noise-induced spikes to the small-amplitude Hopf quasiharmonic oscillations, recently predicted by Makarov, Nekorkin, and Velarde [Phys. Rev. Lett. 86, 3431 (2001)]].
Institut Mediterrani d'Estudis Avançats, CSIC-UIB, E-07071 Palma de Mallorca, Spain.
Francesco
F
Marino
Gustau
G
Catalán
Pedro
P
Sánchez
Salvador
S
Balle
Oreste
O
Piro
D001683:Biological Clocks; D008954:Models, Biological; D008962:Models, Theoretical; D055095:Optics and Photonics; D012666:Semiconductors