Patent ID: 8380076

Claim:
An optical transmission system comprising: an optical source generating a modulated optical signal having an optical spectrum and a value of dispersion robustness; an optical dispersion compensation filter optically connected to the optical source, the optical dispersion compensation filter comprising at least two cascaded optical resonators and having a periodic transfer function rigidly translatable in the frequency spectrum to obtain translation in frequency of the transfer function without a substantial change in shape, and characterized by a free spectral range; a control system acting on the optical dispersion compensation filter for rigidly translating the transfer function along the frequency spectrum in first and second positions in the frequency spectrum, wherein: in the first position in the frequency spectrum of the transfer function, a mean chromatic dispersion weighted over the optical spectrum of the modulated signal is greater, in absolute value, than the value of dispersion robustness and a mean slope of the chromatic dispersion weighted on the optical spectrum of the modulated signal is smaller, in absolute value, than 300000 ps/nm 2 ; in the second position in the frequency spectrum of the transfer function, the mean chromatic dispersion weighted over the optical spectrum of the modulated signal is smaller, in absolute value, than the value of dispersion robustness and mean slope of the chromatic dispersion weighted on the optical spectrum of the modulated signal is smaller, in absolute value, than 300000 ps/nm 2 ; and wherein translation of the transfer function between the first and second positions is smaller than the free spectral range.