Patent ID: 8611746

Claim:
A method of optical transmission between a central terminal and a plurality of client terminals via an optical network, said method being characterized in that it comprises a downlink transmission stage for transmitting downlink data (D 1 , D 2 ) and an uplink transmission stage for transmitting uplink data (D′ 1 , D′ 2 ), said downlink transmission stage comprising the steps of: said central terminal transmitting a downlink optical signal (S) which is multiplexed in both amplitude and time, at a single wavelength (λ 0 ), and carrying the downlink data (D 1 , D 2 ) to be received by said plurality of client terminals, said downlink optical signal (S) at a single wavelength (λ 0 ) consisting of soliton pulses having a plurality of amplitudes (A 1 , A 2 ); using a non-linear soliton trapping effect to convert said single wavelength (λ 0 ) of said downlink optical signal (S) into a plurality of wavelengths (λ 1 , λ 2 ) as a function of said plurality of amplitudes (A 1 , A 2 ) to form a wavelength division multiplexed downlink optical signal (S f ); said central terminal routing the wavelength division multiplexed downlink optical signal (S f ) to said plurality of client terminals; and wavelength division demultiplexing said wavelength division multiplexed downlink optical signal (S f ) so that each client terminal receives the data (D 1 , D 2 ) intended for it at a specific wavelength (λ 1 , λ 2 ).