Patents by Inventor Guilhem De Valicourt

Guilhem De Valicourt 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).

  • Publication number: 20220344887
    Abstract: A photonic device is configured with a photonic integrated circuit (PIC), a plurality of fiber-based gain mediums in optical communication with the PIC, and at least one optical pump outputting pump light coupled into two or more gain mediums. At least one of the fiber-based gain media and the PIC form a hybrid resonant optical cavity there between operative to lase light into the PIC. The gain media further include one or more fiber amplifiers amplifying light signals coupled into and decoupled from the PIC. The photonic device is integrated with Si photonic passive and active photonic elements, while ail fiber links between the gain media and PIC are free from these elements.
    Type: Application
    Filed: September 24, 2020
    Publication date: October 27, 2022
    Applicant: IPG PHOTONICS CORPORATION
    Inventor: Guilhem De Valicourt
  • Publication number: 20220264759
    Abstract: An apparatus includes a rackmount device, in which the rackmount device includes a housing configured to be installed in a server rack, in which the housing has a width in a range from 16 to 20 inches and a height in a range from 1 to 12 inches, the housing includes a front panel, a rear panel, and a bottom surface. The rackmount device includes a first circuit board or substrate having a first surface that defines a length and a width of the first circuit board or substrate, in which the first circuit board or substrate is positioned relative to the housing such that the first surface of the first circuit board or substrate is at an angle relative to the bottom surface of the housing, and the angle is in a range from 45° to 90°.
    Type: Application
    Filed: November 19, 2021
    Publication date: August 18, 2022
    Inventors: Brett Michael Dunn Sawyer, Ron Zhang, Peter James Pupalaikis, Peter Johannes Winzer, Clinton Randy Giles, Guilhem de Valicourt
  • Publication number: 20220244465
    Abstract: An apparatus includes: at least one of a circuit board or a substrate; and a first structure attached to the at least one of a circuit board or a substrate. The first structure is configured to enable an optical module with connector to be removably coupled to the first structure, and the optical module with connector is configured to enable an optical fiber connector to be removably coupled to the optical module with connector.
    Type: Application
    Filed: October 6, 2021
    Publication date: August 4, 2022
    Inventors: Peter Johannes Winzer, Clinton Randy Giles, Guilhem de Valicourt, Peter James Pupalaikis
  • Publication number: 20210175689
    Abstract: The optical amplifier has an inhomogeneously broadened gain material capable of generating a plurality of ensemble gains. A first optical filter and a second optical filter are provided in the photonic integrated circuit. The apparatus has a first laser cavity which includes the optical amplifier, the first optical filter optically coupled to each other and at least two mirrors. The apparatus has a second laser cavity which includes the optical amplifier, the second optical filter optically coupled to each other and at least two mirrors. The first optical filter is tunable to a respective first ensemble gain generated by the optical amplifier and the second filter is tunable to a respective second ensemble gain generated by the optical amplifier; and the second ensemble gain is different from the first ensemble gain. A laser source and an optical transmitter are also disclosed.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 10, 2021
    Applicant: Alcatel-Lucent USA Inc.
    Inventors: Michael EGGLESTON, Guilhem DE VALICOURT
  • Patent number: 10840672
    Abstract: A mode-locked semiconductor laser capable of changing the spacing between the carrier frequencies of its output comb. In an example embodiment, the mode-locked semiconductor laser is implemented as a hybrid solid-state device comprising a III-V semiconductor chip and a silicon chip attached to one another to form a laser cavity. The III-V semiconductor chip includes a gain medium configured to generate light in response to being electrically and/or optically pumped. The silicon chip includes a plurality of optical waveguides arranged to provide multiple optical paths of different effective lengths for the light generated in the laser cavity. Different optical paths can be controllably selected, using one or more optical switches connected between the optical waveguides, to change the effective optical length of the laser cavity and, as a result, the output-comb frequency spacing. In some embodiments, the output-comb frequency spacing can be changeable at least by a factor of 1.5.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: November 17, 2020
    Assignee: Nokia Solutions and Networks OY
    Inventors: Guilhem de Valicourt, Michael S. Eggleston
  • Patent number: 10693275
    Abstract: A directly modulated semiconductor laser whose optical output can be modulated by varying the transmittance of an end reflector of the laser cavity. In an example embodiment, the end reflector can be implemented using a lightwave circuit in which optical waveguides are arranged to form an optical interferometer. At least one of the optical waveguides may include a waveguide section configured to modulate the phase of an optical beam passing therethrough in response to an electrical radio-frequency drive signal in a manner that causes the transmittance and reflectance of the end reflector to be modulated accordingly. Advantageously, relatively high (e.g., >10 GHz) phase and/or amplitude modulation speeds of the optical output can be achieved in this manner to circumvent the inherent modulation-speed limitations of the laser's gain medium.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: June 23, 2020
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Po Dong, Guilhem De Valicourt
  • Patent number: 10367333
    Abstract: An apparatus includes an optical amplifier waveguide and an optical reflector located to reflect back some light received at or near a first end of the optical amplifier waveguide. The apparatus also includes another optical waveguide having a first end located to receive light at or near a second end of the optical amplifier waveguide, and the another optical waveguide having a sequence of optical ring resonators optically connected there along with each of the optical ring resonators being configured to have a different free spectral range. A system and a method are also included.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: July 30, 2019
    Assignee: Nokia of America Corporation
    Inventors: Michael S. Eggleston, Guilhem de Valicourt
  • Publication number: 20190155064
    Abstract: A dual-drive push-pull Mach-Zehnder modulator is provided that suppresses electrical common-mode signal components using differential input in order to mitigate parasitic phase shift effects. The modulator is configured with at least two phase shifting sections with each having a respective set of diodes. Drive signals for each phase shifter are swapped by swapping two waveguide arms in which the first and second set of diodes are constructed in a particular configuration such that the electric field applied by each drive signal in the second set of diodes is the negative of what such signal was in the first set of set of diodes. As the input optical signal propagates through the first waveguide arm and the second waveguide arm, each arm independently modulates the phase which are then re-combined to provide an optical output signal with at least one suppressed signal component.
    Type: Application
    Filed: November 21, 2017
    Publication date: May 23, 2019
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Maarten Huberdina Pascal Tytgat, Guilhem De Valicourt, Sian Chong Jeffrey Lee, Michael Scott Eggleston
  • Patent number: 10295847
    Abstract: A dual-drive push-pull Mach-Zehnder modulator is provided that suppresses electrical common-mode signal components using differential input in order to mitigate parasitic phase shift effects. The modulator is configured with at least two phase shifting sections with each having a respective set of diodes. Drive signals for each phase shifter are swapped by swapping two waveguide arms in which the first and second set of diodes are constructed in a particular configuration such that the electric field applied by each drive signal in the second set of diodes is the negative of what such signal was in the first set of set of diodes. As the input optical signal propagates through the first waveguide arm and the second waveguide arm, each arm independently modulates the phase which are then re-combined to provide an optical output signal with at least one suppressed signal component.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: May 21, 2019
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Maarten Huberdina Pascal Tytgat, Guilhem De Valicourt, Sian Chong Jeffrey Lee, Michael Scott Eggleston
  • Publication number: 20190058304
    Abstract: A mode-locked semiconductor laser capable of changing the spacing between the carrier frequencies of its output comb. In an example embodiment, the mode-locked semiconductor laser is implemented as a hybrid solid-state device comprising a III-V semiconductor chip and a silicon chip attached to one another to form a laser cavity. The III-V semiconductor chip includes a gain medium configured to generate light in response to being electrically and/or optically pumped. The silicon chip includes a plurality of optical waveguides arranged to provide multiple optical paths of different effective lengths for the light generated in the laser cavity. Different optical paths can be controllably selected, using one or more optical switches connected between the optical waveguides, to change the effective optical length of the laser cavity and, as a result, the output-comb frequency spacing. In some embodiments, the output-comb frequency spacing can be changeable at least by a factor of 1.5.
    Type: Application
    Filed: August 18, 2017
    Publication date: February 21, 2019
    Applicant: Nokia Solutions and Networks OY
    Inventors: Guilhem de Valicourt, Michael S. Eggleston
  • Publication number: 20190052044
    Abstract: A directly modulated semiconductor laser whose optical output can be modulated by varying the transmittance of an end reflector of the laser cavity. In an example embodiment, the end reflector can be implemented using a lightwave circuit in which optical waveguides are arranged to form an optical interferometer. At least one of the optical waveguides may include a waveguide section configured to modulate the phase of an optical beam passing therethrough in response to an electrical radio-frequency drive signal in a manner that causes the transmittance and reflectance of the end reflector to be modulated accordingly. Advantageously, relatively high (e.g., >10 GHz) phase and/or amplitude modulation speeds of the optical output can be achieved in this manner to circumvent the inherent modulation-speed limitations of the laser's gain medium.
    Type: Application
    Filed: August 8, 2017
    Publication date: February 14, 2019
    Applicant: Nokia Solutions and Networks OY
    Inventors: Po Dong, Guilhem De Valicourt
  • Publication number: 20180302167
    Abstract: An apparatus includes an optical amplifier waveguide and an optical reflector located to reflect back some light received at or near a first end of the optical amplifier waveguide. The apparatus also includes another optical waveguide having a first end located to receive light at or near a second end of the optical amplifier waveguide, and the another optical waveguide having a sequence of optical ring resonators optically connected there along with each of the optical ring resonators being configured to have a different free spectral range. A system and a method are also included.
    Type: Application
    Filed: April 13, 2017
    Publication date: October 18, 2018
    Inventors: Michael S. Eggleston, Guilhem de Valicourt
  • Patent number: 10044462
    Abstract: An exemplary apparatus is provided for an optical node of an optical ring network. The optical node comprises a main branch with a wavelength blocker configured to block at least one wavelength of signals targeted to a particular node and to permit the signals received on the other wavelength channels pass, a reception unit tuned to the at least one wavelength dedicated to signals targeted to the particular node, a first optical coupler configured to transmit the signals received from a previous node of the optical ring network both to the main branch and to the reception unit, a transmission unit configured to transmit signals to a wavelength channel according to their targeted node, and a second optical coupler configured to receive the signals received from the main branch and from the transmission unit and to transmit the received signals toward a next node of the optical ring network.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: August 7, 2018
    Assignee: Alcatel Lucent
    Inventors: Guilhem De Valicourt, Yvan Pointurier
  • Patent number: 10038301
    Abstract: A hybrid laser structure (comprising III-V gain material and a silicon-based photonic integrated circuit) is configured to control the number of generated mode-locked wavelengths by including an optical wavelength filter within the photonic integrated circuit portion of the laser cavity. The optical wavelength filter is used to control the number of comb lines that are supported by the laser cavity, filtering out a set of non-selected mode-locked wavelengths to control the generated number. The optical filter may be passive or active, and the number of generated comb lines may be fixed or adjustable, as desired.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: July 31, 2018
    Assignee: Nokia of America Corporation
    Inventors: Michael S. Eggleston, Guilhem de Valicourt
  • Patent number: 9762334
    Abstract: We disclose a photonic integrated circuit (PIC) having a first photonic chip and a second photonic chip that are bonded and optically coupled to one another in a manner that reduces the number of different photonic chips that need to be integrated into the same PIC package to achieve a desired electro-optical function. In an example embodiment, the first photonic chip may include active optical components, such as lasers and optical amplifiers, and be fabricated using the III-V semiconductor technology. The second photonic chip may include additional optical components, such as modulators, photodetectors, and passive optical components, and be fabricated using the CMOS technology. The second photonic chip may also include one or more 2×2 optical couplers configured to appropriately (re)direct various optical signals between the active optical components of the first photonic chip and the additional optical components of the second photonic chip to achieve the desired electro-optical function.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: September 12, 2017
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Chia-Ming Chang, Guilhem de Valicourt
  • Publication number: 20170195064
    Abstract: We disclose a photonic integrated circuit (PIC) having a first photonic chip and a second photonic chip that are bonded and optically coupled to one another in a manner that reduces the number of different photonic chips that need to be integrated into the same PIC package to achieve a desired electro-optical function. In an example embodiment, the first photonic chip may include active optical components, such as lasers and optical amplifiers, and be fabricated using the III-V semiconductor technology. The second photonic chip may include additional optical components, such as modulators, photodetectors, and passive optical components, and be fabricated using the CMOS technology. The second photonic chip may also include one or more 2×2 optical couplers configured to appropriately (re)direct various optical signals between the active optical components of the first photonic chip and the additional optical components of the second photonic chip to achieve the desired electro-optical function.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 6, 2017
    Applicant: Alcatel-Lucent USA Inc.
    Inventors: Chia-Ming Chang, Guilhem de Valicourt
  • Publication number: 20170026133
    Abstract: A technique is provided for modulating light in a telecommunication network. The technique includes modulating light with a first intensity modulator and modulating light with a second intensity modulator. The first intensity modulator and the second intensity modulator are applied a mutual angular phase shift. The mutual angular phase shift is non-orthogonal and non-PI/2-dividable.
    Type: Application
    Filed: April 13, 2015
    Publication date: January 26, 2017
    Applicant: Alcatel Lucent
    Inventors: Jean-Christophe ANTONA, Patricia LAYEC, Guilhem DE VALICOURT
  • Patent number: 9537597
    Abstract: The telecommunications network node linking a metropolitan area network, including at least one optical link connecting the nodes, with at least one access network, includes an electronic card that enables the aggregation of traffic from multiple access networks, a transmitter capable of receiving an electrical signal from the electronic card and of transmitting an optical packet to the metropolitan area network, a circulator capable of extracting a stream of multiplexed optical packets from the optical link and of inserting a stream of multiplexed optical packets into the optical link, and a reflective switching matrix receiving a stream of multiplexed optical packets from among which it selects and detects those intended for the access network.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: January 3, 2017
    Assignee: Alcatel Lucent
    Inventors: Romain Brenot, Guilhem De Valicourt
  • Publication number: 20160315451
    Abstract: A tunable optical apparatus comprises a silicon photonic integrated circuit region and a semiconductor optical amplifier optically coupled to each other. Tuning is achieved by having a first variable optical gate in off-state so as to substantially avoid attenuation of power of a first optical signal propagating through a first optical path and by having a second variable optical gate in on-state so as to attenuate power of a second optical signal propagating through a second optical path, the first optical path and the second optical path being optically coupled to the semiconductor optical amplifier.
    Type: Application
    Filed: April 12, 2016
    Publication date: October 27, 2016
    Applicant: Alcatel-Lucent USA Inc.
    Inventors: Guilhem de Valicourt, Po Dong
  • Publication number: 20160233976
    Abstract: An exemplary apparatus is provided for an optical node of an optical ring network. The optical node comprises a main branch with a wavelength blocker configured to block at least one wavelength of signals targeted to a particular node and to permit the signals received on the other wavelength channels pass, a reception unit tuned to the at least one wavelength dedicated to signals targeted to the particular node, a first optical coupler configured to transmit the signals received from a previous node of the optical ring network both to the main branch and to the reception unit, a transmission unit configured to transmit signals to a wavelength channel according to their targeted node, and a second optical coupler configured to receive the signals received from the main branch and from the transmission unit and to transmit the received signals toward a next node of the optical ring network.
    Type: Application
    Filed: August 29, 2014
    Publication date: August 11, 2016
    Inventors: Guilhem DE VALICOURT, Yvan POINTURIER