Patents by Inventor Sebastien Bigo
Sebastien Bigo 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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Publication number: 20240129044Abstract: An apparatus comprises an optical data receiver to receive first and second data-modulated optical carriers in different wavelength bands via a free space optical link and to generate an output digital data stream from demodulated segments of the first and second data-modulated optical carriers. The optical data receiver is configured to make selections between temporally corresponding portions of the first and second data-modulated optical carriers for generating successive portions of the output digital data stream. The optical data receiver is configured to make one of the selections between two of the temporally corresponding portions of the first and second data-modulated optical carriers based on at least one value of a quality indicator obtained for at least one of two temporally corresponding portions.Type: ApplicationFiled: September 26, 2023Publication date: April 18, 2024Inventors: Sylvain ALMONACIL, Rajiv BODDEDA, Sebastien BIGO, Jeremie RENAUDIER
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Patent number: 11962515Abstract: In certain embodiments, a communication network has a specialized ingress node that converts one or more incoming flows into a single, packetized, time-division multiplexed (TDM) flow; a switch fabric that routes the TDM flow via a fixed path through the switch fabric in a contention-free manner; and a specialized egress node that converts the TDM flow received from the switch fabric into one or more outgoing flows corresponding to the one or more incoming flows. The technology turns legacy, best-effort packet-switching into deterministic circuit-switching for a programmable selection of flows with minimal impact on network dynamics and at relatively low cost.Type: GrantFiled: February 28, 2022Date of Patent: April 16, 2024Assignee: Nokia Solutions and Networks OyInventors: Nihel Djoher Benzaoui, Guillaume Pierre Fernand Soudais, Sebastien Bigo
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Publication number: 20230275852Abstract: In certain embodiments, a communication network has a specialized ingress node that converts one or more incoming flows into a single, packetized, time-division multiplexed (TDM) flow; a switch fabric that routes the TDM flow via a fixed path through the switch fabric in a contention-free manner; and a specialized egress node that converts the TDM flow received from the switch fabric into one or more outgoing flows corresponding to the one or more incoming flows. The technology turns legacy, best-effort packet-switching into deterministic circuit-switching for a programmable selection of flows with minimal impact on network dynamics and at relatively low cost.Type: ApplicationFiled: February 28, 2022Publication date: August 31, 2023Applicant: Nokia Solutions and Networks OyInventors: Nihel Djoher Benzaoui, Guillaume Pierre Fernand Soudais, Sebastien Bigo
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Patent number: 10122443Abstract: A technique is provided for determining an optical transmission system description. The technique includes determining a dispersion map of the optical transmission system, placing a set of discrete cumulative dispersions onto the dispersion map, and defining a plurality of sequential system segments of the optical transmission system. Each system segment has an input point that corresponds to a point in the optical transmission system where the input cumulative dispersion matches a cumulative dispersion of the set of discrete cumulative dispersions. For each system segment, an input power of the system segment and a local dispersion value of the system segment is determined. Also, for each system segment, a sequence number of the system segments is stored. Furthermore, for each system segment, the input power and the local dispersion value determined in relation with the input cumulative dispersion of the system segment in a data repository is stored.Type: GrantFiled: September 29, 2015Date of Patent: November 6, 2018Assignee: Alcatel LucentInventors: Emmanuel Seve, Petros Ramantanis, Jean-Christophe Antona, Sebastien Bigo
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Publication number: 20170244480Abstract: A technique is provided for determining an optical transmission system description. The technique includes determining a dispersion map of the optical transmission system, placing a set of discrete cumulative dispersions onto the dispersion map, and defining a plurality of sequential system segments of the optical transmission system. Each system segment has an input point that corresponds to a point in the optical transmission system where the input cumulative dispersion matches a cumulative dispersion of the set of discrete cumulative dispersions. For each system segment, an input power of the system segment and a local dispersion value of the system segment is determined. Also, for each system segment, a sequence number of the system segments is stored. Furthermore, for each system segment, the input power and the local dispersion value determined in relation with the input cumulative dispersion of the system segment in a data repository is stored.Type: ApplicationFiled: September 29, 2015Publication date: August 24, 2017Inventors: Emmanuel SEVE, Petros RAMANTANIS, Jean-Christophe ANTONA, Sebastien BIGO
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Publication number: 20170244481Abstract: A technique is provided for producing a quality of transmission estimator for optical transmissions. The technique includes defining a local dispersion value, defining a dispersion increment, and performing a propagation calculation of an optical signal along an elementary section. The elementary section is a propagation medium characterized by the local dispersion value. The elementary section length may correspond to the dispersion increment. The optical signal, which is incoming in the elementary section, is previously affected by a cumulative dispersion value equal to an integer number of the dispersion increment. For each elementary section, a variance of noise is determined, the noise representing a distortion due to Kerr nonlinear field contributions in the elementary section. For each couple of elementary sections, a covariance of noise is determined between the couple of elementary sections. The variances and covariances may be stored in a look-up table of a data repository.Type: ApplicationFiled: September 29, 2015Publication date: August 24, 2017Inventors: Emmanuel SEVE, Petros RAMANT ANIS, Jean-Christophe ANTONA, Sebastien BIGO
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Patent number: 9166682Abstract: The present document relates to a method and apparatus in optical transmission systems for the estimation of the carrier phase and the degree of non-linear distortions incurred in an optical transmission channel. A plurality of signal samples are provided at succeeding time instances such that the plurality of signal samples: is associated with a modulation scheme and a carrier phase; has been transmitted over the optical transmission channel; comprises a plurality of signal phases, respectively; comprises a plurality of data phases and a plurality of residual phases, respectively; and the plurality of residual phases is associated with the carrier phase. The method comprises further canceling the plurality of data phases from the plurality of signal phases by taking into account the modulation scheme; thereby yielding the plurality of residual phases; and determining a set of autocorrelation values of the plurality of residual phases for a set of lag values, respectively.Type: GrantFiled: November 19, 2010Date of Patent: October 20, 2015Assignee: Alcatel LucentInventors: Jeremie Renaudier, Adrian Voicila, Sébastien Bigo
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Publication number: 20120269507Abstract: The present document relates to a method and apparatus in optical transmission systems for the estimation of the carrier phase and the degree of non-linear distortions incurred in an optical transmission channel. A plurality of signal samples are provided at succeeding time instances such that the plurality of signal samples: is associated with a modulation scheme and a carrier phase; has been transmitted over the optical transmission channel; comprises a plurality of signal phases, respectively; comprises a plurality of data phases and a plurality of residual phases, respectively; and the plurality of residual phases is associated with the carrier phase. The method comprises further canceling the plurality of data phases from the plurality of signal phases by taking into account the modulation scheme; thereby yielding the plurality of residual phases; and determining a set of autocorrelation values of the plurality of residual phases for a set of lag values, respectively.Type: ApplicationFiled: November 19, 2010Publication date: October 25, 2012Applicant: Alcatel LucentInventors: Jeremie Renaudier, Adrian Voicila, Sébastien Bigo
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Patent number: 7599628Abstract: A method for modulating an optical signal includes the following steps: modulating the intensity of the optical signal with a nonreturn-to-zero bit signal, and modulating the phase of the optical signal with a periodic phase-shift signal creating an alternating ?-phase shift every second, third or more consecutive bit. An optical transmitter for performing the above method comprises a first modulator (2) modulating the intensity of the optical signal with a nonreturn-to-zero bit signal, and a second modulator (3) modulating the phase of the optical signal with a periodic phase-shift signal creating an alternating ?-phase shift every second, third or more consecutive bit.Type: GrantFiled: December 15, 2005Date of Patent: October 6, 2009Assignee: ALCATELInventors: Sébastien Bigo, Eric Barnasson, Gabriel Charlet
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Patent number: 7319823Abstract: The invention shows a transmission system with a transmitter function, a transmitting fiber and a receiver function where the transmitter function comprising lightsources (1), modulators (2) and a multiplexer (3), and the receiver comprising at least a demultiplexer (5), filters and electrical receivers where the channels for left side filtering are modulated with modulators with a negative chirp and for right side filtering with modulators with positive chirp.Type: GrantFiled: January 25, 2002Date of Patent: January 15, 2008Assignee: AlcatelInventors: Sébastien Bigo, Yann Frignac, Wilfried Idler, Eugen Lach
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Patent number: 7302194Abstract: The present invention specially deals with a transmission system in which at least two coded optical signals are multiplexed and transmitted between an emitter and a receiver, a first of said coded signals providing a first spectrum having a first carrier wavelength and two side-bands, a second of said coded signals providing a second spectrum having a second carrier wavelength higher than said first carrier wavelength and two side-bands. This transmission system comprises at least one optical filter with to combined filters for the carrier wavelength and the respective sideband.Type: GrantFiled: July 25, 2003Date of Patent: November 27, 2007Assignee: AlcatelInventors: Yann Frignac, Sébastien Bigo
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Patent number: 7177545Abstract: The present invention propose an optical filter for filtering out at least a part of one of two spectral side-bands of a coded optical signal spectrum having a carrier wavelength, the first of said side-bands which is to be transmitted by said filter being called transmitted side-band, the second of said side-bands which is to be filtered out by said filter being called vestigial side-band, said optical filter having a transmission response in intensity, having a maximum value at a central filter wavelength distinct from said carrier wavelength and located in said transmitted side-band, and said response being divided into two parts, a first filter part associated to a wavelength region including said carrier wavelength, a second filter part associated to a wavelength region which does not include said carrier wavelength where at a given value of transmittance distinct from said maximum value, said second filter part has a filter width smaller than the filter width of said first filter part.Type: GrantFiled: December 17, 2002Date of Patent: February 13, 2007Assignee: AlcatelInventors: Yann Frignac, Sébastien Bigo
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Publication number: 20060263085Abstract: The present invention relates to a method of determining the performance of a heterogeneous optical transmission system, which preferably comprises wavelength division multiplexing (WDM), wherein said heterogeneous optical transmission system comprises a plurality of preferably homogenous optical transmission subsystems (i), characterized by determining a criterion (?) for said performance of the heterogeneous optical transmission system depending on a weighted combination of performance criteria (?(i)) of said optical transmission subsystems (i). The present invention further relates to a system for determining the performance of a heterogeneous optical transmission system comprising wavelength division multiplexing (WDM), wherein said heterogeneous optical transmission system comprises a plurality of preferably homogenous optical transmission subsystems (i).Type: ApplicationFiled: April 28, 2006Publication date: November 23, 2006Inventors: Jean-Christophe Antona, Sebastien Bigo
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Publication number: 20060171723Abstract: A method for modulating an optical signal includes the following steps: modulating the intensity of the optical signal with a nonreturn-to-zero bit signal, and modulating the phase of the optical signal with a periodic phase-shift signal creating an alternating ?-phase shift every second, third or more consecutive bit. An optical transmitter for performing the above method comprises a first modulator (2) modulating the intensity of the optical signal with a nonreturn-to-zero bit signal, and a second modulator (3) modulating the phase of the optical signal with a periodic phase-shift signal creating an alternating ?-phase shift every second, third or more consecutive bit.Type: ApplicationFiled: December 15, 2005Publication date: August 3, 2006Inventors: Sebastien Bigo, Eric Barnasson, Gabriel Charlet
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Publication number: 20060039661Abstract: The fibre is adapted to compensation of the chromatic dispersion and chromatic dispersion slope of an optical fibre with negative chromatic dispersion. It has, in a propagation mode other than the fundamental mode, a positive chromatic dispersion and a negative chromatic dispersion slope. The fibre can be used in compensation dispersion modules or as line fibre, in transmission systems using line fibre with negative chromatic dispersion.Type: ApplicationFiled: October 25, 2005Publication date: February 23, 2006Inventors: Cyril Ruilier, Sebastien Bigo, Jose Chesnoy, Pierre Sansonetti
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Patent number: 6999666Abstract: The fiber is adapted to compensation of the chromatic dispersion and chromatic dispersion slope of an optical fiber with negative chromatic dispersion. It has, in a propagation mode other than the fundamental mode, a positive chromatic dispersion and a negative chromatic dispersion slope. The fiber can be used in compensation dispersion modules or as line fiber, in transmission systems using line fiber with negative chromatic dispersion.Type: GrantFiled: April 4, 2003Date of Patent: February 14, 2006Assignee: Draka Comteo B.V.Inventors: Cyril Ruilier, Sébastien Bigo, José Chesnoy, Pierre Sansonetti
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Publication number: 20050036784Abstract: The present invention specially deals with a transmission system in which at least two coded optical signals are multiplexed and transmitted between an emitter and a receiver, a first of said coded signals providing a first spectrum having a first carrier wavelength and two side-bands, a second of said coded signals providing a second spectrum having a second carrier wavelength higher than said first carrier wavelength and two side-bands. This transmission system comprises at least one optical filter with to combined filters for the carrier wavelength and the respective sideband.Type: ApplicationFiled: July 25, 2003Publication date: February 17, 2005Inventors: Yann Frignac, Sebastien Bigo
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Patent number: 6748134Abstract: A frequency allocation scheme for optical channels transmitted via a WDM transmission line with alternating left side and right side filtering for adjacent channels, with alternating channel spacing of A and B, where A<B, and with two sets of channels orthogonally polarized.Type: GrantFiled: February 6, 2002Date of Patent: June 8, 2004Assignee: NEC CorporationInventors: Sébastien Bigo, Yann Frignac, Wilfried Idler
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Patent number: 6738580Abstract: The invention relates to a wavelength division multiplex transmission system; for one channel, the spectral interval between adjacent channels on one side is different from the spectral interval between adjacent channels on the other side. A demultiplexing filter is used which attenuates more strongly the spectrum of the channel on the side on which the spectral interval between adjacent channels is smaller. The invention improves spectral efficiency and retains frequencies chosen from a grid of regularly spaced frequencies.Type: GrantFiled: February 27, 2001Date of Patent: May 18, 2004Assignee: AlcatelInventors: Yann Frignac, Sébastien Bigo
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Publication number: 20030202761Abstract: The fibre is adapted to compensation of the chromatic dispersion and chromatic dispersion slope of an optical fibre with negative chromatic dispersion. It has, in a propagation mode other than the fundamental mode, a positive chromatic dispersion and a negative chromatic dispersion slope.Type: ApplicationFiled: April 4, 2003Publication date: October 30, 2003Applicant: ALCATELInventors: Cyril Ruilier, Sebastien Bigo, Jose Chesnoy, Pierre Sansonetti