Patents by Inventor Guido Oliveti
Guido Oliveti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7645076Abstract: A coupling structure for coupling optical radiation, i.e., light, between an optical fibre and an optical device, e.g., a laser diode or a photodiode. The coupling structure has an optical through-via which guides the optical radiation to or from the optical fibre. Light exiting the fibre travels through a guidance channel so it remains substantially confined to a narrow optical path that mimics the fibre core. Conversely, light enters the fibre after having traveled through the guidance channel. The guidance channel has a first core region, the “channel core”, having first refractive index surrounded by a second region, the “channel cladding” having a second refractive index smaller than the first refractive index. The coupling structure, including the guidance channel, is preferably made of semiconductor-based material, more preferably of silicon-based material. The guidance channel is preferably silicon oxide.Type: GrantFiled: April 29, 2003Date of Patent: January 12, 2010Assignees: Pirelli & C. S.p.A., ST Microelectronics NVInventors: Francesco Martini, Pietro Montanini, Guido Oliveti, Alberto Rampulla, Giacomo Rossi
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Patent number: 7588472Abstract: A modular apparatus for data communication between a distribution network and a residential network is disclosed. The apparatus has a first device adapted to interface a distribution network, at least one second device adapted to interface a residential network and to be mechanically and electrically connected to the first device, and at least one interconnecting lock adapted to keep the first device and the at least one second device firmly secured to each other and to activate electrical supply between the first device and the at least one second device.Type: GrantFiled: December 18, 2002Date of Patent: September 15, 2009Assignee: Pirelli & C. S.p.A.Inventors: Guido Oliveti, Francesco Simonelli, Giovanni Tagliabue
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Publication number: 20090136237Abstract: A coupling structure for coupling optical radiation, i.e., light, between an optical fibre and an optical device, e.g., a laser diode or a photodiode. The coupling structure has an optical through-via which guides the optical radiation to or from the optical fibre. Light exiting the fibre travels through a guidance channel so it remains substantially confined to a narrow optical path that mimics the fibre core. Conversely, light enters the fibre after having traveled through the guidance channel. The guidance channel has a first core region, the “channel core”, having first refractive index surrounded by a second region, the “channel cladding” having a second refractive index smaller than the first refractive index. The coupling structure, including the guidance channel, is preferably made of semiconductor-based material, more preferably of silicon-based material. The guidance channel is preferably silicon oxide.Type: ApplicationFiled: April 29, 2003Publication date: May 28, 2009Inventors: Francesco Martini, Pietro Montanini, Guido Oliveti, Alberto Rampulla, Giacomo Rossi
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Publication number: 20080123669Abstract: A modular apparatus for data communication between a distribution network and a residential network is disclosed. The apparatus has a first device adapted to interface a distribution network, at least one second device adapted to interface a residential network and to be mechanically and electrically connected to the first device, and at least one interconnecting lock adapted to keep the first device and the at least one second device firmly secured to each other and to activate electrical supply between the first device and the at least one second device.Type: ApplicationFiled: December 18, 2002Publication date: May 29, 2008Inventors: Guido Oliveti, Francesco Simonelli, Giovanni Tagliabue
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Patent number: 7210855Abstract: A device for connecting an optical fibre has a connector associated with at least one optical fibre and can be inserted into a receptacle so as to realize an optical connection along an optical connection axis at an angle of 20° between the at least one optical fibre and at least one connection component housed in the receptacle. The connector has a main body for holding a first portion of an end part of at least one optical fibre and to let a second portion of the end part of the optical fibre project. A cover is slidably associated with the main body. The cover houses the second portion of the end part of optical fibre and leaves at least one bare end of the second portion of the end part completely uncovered.Type: GrantFiled: August 6, 2002Date of Patent: May 1, 2007Assignee: Pirelli & C. SpAInventors: Giacomo Rossi, Guido Oliveti
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Publication number: 20060187954Abstract: A modular expandable gateway has at least one base module, including a broad-band data communication device for handling communications with an external broad band data communication network, at least one local network port for the connection to a local communication network, a local network interface device adapted to handle communications with the local data communication network and coupled to the local network port through a local network communication bus, the local network interface having a media independent interface and a disable input, a data processing unit interacting with the broad-band data communication device and, through a media independent interface bus connected to the media independent interface, with the local network interface device, so as to enable intercommunication between the local network and the external network; a disable signal line coupled to the disable input of the local network interface device and adapted to drive the local network interface device into a disabled state inType: ApplicationFiled: December 10, 2002Publication date: August 24, 2006Inventors: Enrico Braschi, Francesco Simonelli, Guido Oliveti
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Patent number: 6909821Abstract: A network for distributing signals to a plurality of user apparatuses having a distribution unit with a plurality of ports, and a plurality of optical-fiber cables connected to the ports and suitable to make the plurality of ports of the distribution unit communicate with the plurality of user apparatuses. At least one of the plurality of optical-fiber cables is an electrically terminated optical cable having an optical cable with a single-mode optical fiber and an opto-electronic end portion mechanically and permanently connected to an end of the optical cable, and the opto-electronic end portion has an opto-electronic conversion device having an optic port optically aligned with and mechanically connected to, an end of the single-mode optical fiber.Type: GrantFiled: December 27, 2000Date of Patent: June 21, 2005Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Giuseppe Ravasio, Guido Oliveti, Claudio Zammarchi
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Patent number: 6885802Abstract: A network for distributing signals to a plurality of user having a distribution unit and a plurality of optical cables adapted to make the distribution unit communicate with the plurality of user equipment. In turn, each optical cable has an optical fibre having a core, a cladding and a predetermined simple refractive index profile ?n(r). Each optical fibre is adapted to guarantee a single-mode propagation at higher wavelengths than about 1260 nm and a few-mode propagation at about 850 nm, and each optical fibre has such refractive index profile ?n(r) as to guarantee macro-bending losses at 1550 nm that are less than about 0.5 dB and an intermodal delay ?? at 850 nm that is less than or equal to, about 1 ns/Km.Type: GrantFiled: September 7, 2001Date of Patent: April 26, 2005Assignee: Pirelli S.p.A.Inventors: Guidö Oliveti, Francesco Ivan Pomarico, Giacomo Roba, Davide Sarchi, Francesco Sartori
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Publication number: 20050013547Abstract: A device for connecting an optical fibre has a connector associated with at least one optical fibre and can be inserted into a receptacle so as to realize an optical connection along an optical connection axis at an angle of 20° between the at least one optical fibre and at least one connection component housed in the receptacle. The connector has a main body for holding a first portion of an end part of at least one optical fibre and to let a second portion of the end part of the optical fibre project. A cover is slidably associated with the main body. The cover houses the second portion of the end part of optical fibre and leaves at least one bare end of the second portion of the end part completely uncovered.Type: ApplicationFiled: August 6, 2002Publication date: January 20, 2005Inventors: Giacomo Rossi, Guido Oliveti
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Patent number: 6760519Abstract: Optical device for compensating chromatic dispersion, comprising a variable-pitch Bragg grating having a predetermined reflection wavelength and a predetermined chirping factor, and a substrate, in which the said grating is fitted into a central longitudinal groove, and which can be elongated in such a way as to cause a change in the said predetermined chirping factor.Type: GrantFiled: June 27, 2002Date of Patent: July 6, 2004Assignee: Corning IncorporatedInventor: Guido Oliveti
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Publication number: 20040033039Abstract: A network for distributing signals to a plurality of user equipment having a distribution unit and a plurality of optical cables adapted to make the distribution unit communicate with the plurality of user equipment. In turn, each optical cable has an optical fibre having a core, a cladding and a predetermined simple refractive index profile &Dgr;n(r). Each optical fibre is adapted to guarantee a single-mode propagation at higher wavelengths than about 1260 nm and a few-mode propagation at about 850 nm, and each optical fibre has such refractive index profile &Dgr;n(r) as to guarantee macro-bending losses at 1550 nm that are less than about 0.5 dB and an intermodal delay &Dgr;&tgr; at 850 nm that is less than or equal to, about 1 ns/Km.Type: ApplicationFiled: August 25, 2003Publication date: February 19, 2004Inventors: Guido Oliveti, Francesco Ivan Pomarico, Giacomo Roba, Davide Sarchi, Francesco Sartori
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Patent number: 6690685Abstract: To produce a fiber laser (106) a double-cladding active fiber (114) doped with Yb is predisposed to receive, near a first end (114a), a UV radiation suitable to write a first Bragg grating; during the writing process, a scanned pumping radiation is fed to the first end of the active fiber in order to excite an amplified stimulated emission between the first grating and the reflecting surface of a second end (114b) of the active fiber, previously cut and cleaned, and to consequently induce a laser emission from the active fiber; the optical power of the laser emission is measured and processed to obtain the laser efficiency; when a maximum value of the efficiency is reached, the writing process is stopped; similar steps are used to write a second grating near the second end (114b) of the active fiber.Type: GrantFiled: June 18, 2002Date of Patent: February 10, 2004Assignee: Corning O.T.I., SpAInventors: Guido Oliveti, Giacomo Rossi, Maurizio Tormen
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Patent number: 6603598Abstract: An optical amplifying unit includes an input for the input optical signals and an output for the output of the optical signals. A single-mode active fiber codoped with Er and Yb is optically connected to the input and the output and adapted to amplify the optical signals. A first pump source generates a first pump radiation including an excitation wavelength for Er, and a second pump source for generates a second pump radiation including an excitation wavelength for Yb. A first optical coupler optically couples the first pump radiation into the core of the active fiber in a co-propagating direction with respect to signal direction, and a second optical coupler optically couples the second pump radiation into the core of the active fiber in a counter-propagating direction with respect to signal direction.Type: GrantFiled: September 28, 2000Date of Patent: August 5, 2003Assignee: Corning O.T.I. Inc.Inventors: Guido Oliveti, Giacomo Rossi, Valeria Giuseppina Gusmeroli, Giovanni Sacchi, Fabrizio Di Pasquale
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Publication number: 20030123813Abstract: A network (100) for distributing signals to a plurality of user apparel comprising: a distribution unit (40) having a plurality of ports, and a plurality of optical-fibre cables (9) connected to said ports and suitable to make said plurality of ports of said distribution unit (40) communicate with said plurality of user apparatuses, wherein at least one of said plurality of optical-fibre cables (9) is an electrically terminated optical cable (1) comprising an optical cable (9) with a single-mode optical fibre and an opto-electronic end portion (10) mechanically and permanently connected to an end of said optical cable, and said opto-electronic end portion (10) comprises an opto-electronic conversion device,(12; 13) having an optic port optically aligned with and mechanically connected to, an end of said single-mode optical fibre.Type: ApplicationFiled: November 6, 2002Publication date: July 3, 2003Inventors: Giuseppe Ravasio, Guido Oliveti, Claudio Zammarchi
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Publication number: 20030048990Abstract: Optical device for compensating chromatic dispersion, comprising a variable-pitch Bragg grating having a predetermined reflection wavelength and a predetermined chirping factor, and a substrate, in which the said grating is fitted into a central longitudinal groove, and which can be elongated in such a way as to cause a change in the said predetermined chirping factor.Type: ApplicationFiled: June 27, 2002Publication date: March 13, 2003Inventor: Guido Oliveti
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Publication number: 20030012500Abstract: Structure capable of compensating for the effects of temperature variations on an optical fibre component, the said optical fibre component having at least a first end (92) and at least a second end (93). In particular, the said structure comprises: a first support capable of fixing the said first end (93) of the optical fibre component (9), a second support capable of fixing the said second end (92) of the optical fibre component (9), a central element (4) which connects the said first support to the said second support, having a coefficient of thermal expansion greater than that of both the said first support and the said second support, in such a way as to cause a variation of the distance between the said two ends of the component as the temperature varies.Type: ApplicationFiled: June 17, 2002Publication date: January 16, 2003Inventor: Guido Oliveti