Ghiggino
Pierpaolo Ghiggino, Leamington Spa GB
Patent application number | Description | Published |
---|---|---|
20110076018 | Improved Optical Access Network and Nodes - An optical network terminal (ONT) for use in an optical access network and comprising: an optical transceiver arranged to communicate with an optical line terminal using a wavelength which is modulated to carry sub-channels; a second transceiver arranged to communicate with a number of subscriber equipment using respective subscriber equipment channels; the ONT arranged to automatically map each subscriber equipment channel to a respective sub-channel of the wavelength without using an address associated with the respective subscriber equipment. | 03-31-2011 |
20120189301 | APPARATUS AND METHOD FOR OPERATING A WAVELENGTH DIVISION MULTIPLEXING ACCESS NETWORK - The invention relates in general to a method, an apparatus and a unit for operating a Wavelength Division Multiplexing Access Network | 07-26-2012 |
20130272707 | OPTICAL NETWORK - An optical network includes a first passive optical network optical line terminal that transmits a first optical signal at a first wavelength, coupled to a first port of a first optical filter arrangement, and a second passive optical network optical line terminal that transmits a second optical signal at a second, different wavelength, coupled to a second port of the first optical filter arrangement. An optical coupler, connected between the second terminal and the second port of the first optical filter, couples optical signals at a predetermined set of wavelengths from a third optical line terminal into the second port. A passive optical distribution node connects to optical network terminations and distributes optical signals between the optical line terminals and the optical network terminations. A method of provisioning an optical network is also described. | 10-17-2013 |
Pierpaolo Ghiggino, Pisa IT
Patent application number | Description | Published |
---|---|---|
20100329680 | OPTICAL NETWORKS - The invention relates to improvements in or relating to optical networks. Methods and apparatus are disclosed for providing communications services to at least one user. Transmission of an optical signal in the downstream direction is described comprising at least one Wavelength Division Multiplexing channel such that at least one of the channels is an unmodulated channel. The unmodulated channel is arranged to transmit user data from the at least one user in the upstream direction. | 12-30-2010 |
20110158644 | IN OR RELATING TO MULTICARRIER COMMUNICATION - The invention relates to improvements in or relating to multicarrier communication and includes a method and a system for communication between an optical line terminal and a plurality of users over a single optical fibre. A portion of a down-stream optical signal is input to an optical circuit, the downstream signal comprising a plurality of subcarriers modulated at a first frequency, the portion of the downstream optical signal is processed at the optical circuit to remove the plurality of subcarriers and to change the first frequency into a second frequency. The processed portion of the downstream signal is then used for communication in the upstream direction. | 06-30-2011 |
Pierpaolo Ghiggino, Spa IT
Patent application number | Description | Published |
---|---|---|
20100239258 | OPTICAL PON NETWORK USING PASSIVE DPSK DEMODULATION - An optical PON network comprises a central office which generates N DPSK modulated optical signals, where N is an integer greater than 1, an optical coupling which connects the N signals to at least one optical fibre, a passive distribution mode located remotely from the central office which has at least one input port that is coupled to the fibre and a plurality of output node being arranged to transmit a first wavelength of the N signals to at least one of its output ports, and at least one optical network unit connected through a respective optical fibre to the first output port of the passive distribution node. The passive distribution node comprises an arrayed waveguide grating which provides a passive optical connection between its input port and the first output port and which for that connection functions as a bandpass filter having a profile and bandwidth selected such that the DPSK optical signal passed to the input node is converted to an intensity modulated signal at the output port. | 09-23-2010 |