Patents Examined by David Lambert
  • Patent number: 10435163
    Abstract: An aircraft propelled by a turbojet having contrarotating fans, the turbojet being incorporated at the rear of a fuselage of the aircraft and in line therewith and including two gas generators that feed a working turbine having two contrarotating turbine rotors for driving two fans arranged downstream from the gas generators, and distinct air intakes for feeding each gas generator, the air intakes being connected to the fuselage of the aircraft so as to take in at least a portion of the boundary layer formed around the fuselage of the aircraft.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: October 8, 2019
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventor: Fran├žois Gallet
  • Patent number: 10287987
    Abstract: A gas turbine engine includes a first airflow structure and a second airflow structure disposed aft of the first airflow structure. The second airflow structure includes a leading edge region. A thickness of the leading edge region is based on a thickness of a wake in the airflow produced by the first airflow structure when the airflow passes between the first airflow structure and the second airflow structure.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: May 14, 2019
    Assignee: United Technologies Corporation
    Inventors: Constantine Baltas, Oliver V. Atassi
  • Patent number: 10165390
    Abstract: According to one system, the system includes a chassis defining an enclosure and containing one or more slots. The system further includes a radio frequency identification (RFID) reader module comprising at least one processor and one or more RFID readers located within the enclosure, wherein the one or more RFID readers are configured to read data stored in RFID tags associated with one or more unpowered network taps. The RFID reader module is configured to receive, from a first RFID reader associated with a first slot of the chassis, information regarding a first unpowered network tap in the first slot, to determine, using a known location of the first RFID reader, a slot identifier associated with the first unpowered network tap, wherein the slot identifier indicates that the first unpowered network tap is in the first slot, and to provide the information and the slot identifier to a management system.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: December 25, 2018
    Assignee: KEYSIGHT TECHNOLOGIES SINGAPORE (HOLDLNGS) PTE. LTD.
    Inventors: Marcel Felix Desdier, Larry Allan Campbell, Siuman Hui
  • Patent number: 10154322
    Abstract: An optical system is provided that converts optical signals received over an optical trunk from a first optical switch to client optical signals intended for a second optical switch. The first and second optical switches operate in accordance with a Fiber Channel (FC) protocol. An interruption of the optical signals on the optical trunk is detected. Responsive to the interruption, a Not Operational State (NOS) message sent to the second optical switch is delayed so as to delay triggering of an FC link initialization in the second optical switch. While the NOS message is delayed, idle messages are sent to the second optical switch.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: December 11, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Giovanni Tandi, Gilberto Loprieno
  • Patent number: 10153860
    Abstract: A method of loading a fiber optic transport system includes adding one or more control channels to an optical fiber having one or more channels, wherein each of the control channels comprises a pair of signals that are cross-polarized and each of the pair of signals is at a different frequency from one another; measuring optical power on the optical fiber; and adjusting optical power of the one or more control channels based on the measured optical power.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: December 11, 2018
    Assignee: Ciena Corporation
    Inventors: David Boertjes, Loren Berg
  • Patent number: 10142029
    Abstract: Device for modulating the intensity of an optical signal on four levels, this device comprising: a first resonant ring modulator comprising an output port capable of delivering a first modulated optical signal, a second resonant ring modulator comprising an output port capable of delivering a second modulated optical signal, an optical assembler comprising: a first input optically coupled to the output port of the second resonant ring modulator, a second input optically coupled to the output port of the first resonant ring modulator, and an output capable of delivering the optical signal of which the intensity is modulated on four different levels constructed by combining the optical signals received on its first and second inputs.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: November 27, 2018
    Assignee: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventors: Olivier Dubray, Benjamin Blampey, Sylvie Menezo
  • Patent number: 10128940
    Abstract: An optical transmission method wavelength-multiplexing and transmitting multiple channels including data. The data are composed of data areas independent between the channels and data areas non-independent between the channels. Data patterns of the data areas non-independent between the channels are variable. The data patterns of the data areas non-independent between the channels are set so that in time periods of the non-independent data areas on an optical transmission section, a time period during which polarization states of the multiple channels are correlated in the optical transmission section has a length such that an error rate is less than or equal to a threshold value, the error rate being determined from a temporal distribution of bit errors obtained from a result of error decision after demodulation in an optical receiver.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: November 13, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroki Goto, Tsuyoshi Yoshida, Kiyoshi Onohara, Takashi Sugihara, Kazuo Kubo, Tatsuya Kobayashi, Keisuke Matsuda, Masashi Binkai
  • Patent number: 10129616
    Abstract: A radio frequency over glass (RFoG) system may be modified to extend a downstream band. A transimpedance amplifier with a downstream path may be used in the RFoG system in combination with an upstream path having greater than 200 MHz radio frequency (RF) bandwidth to provide the greater than 1.2 GHz downstream bandwidth overlapping with the greater than 200 MHz upstream bandwidth. The RFoG system may include a gateway facilitating an optical network unit and modem connection, the gateway having an express upstream port and an express downstream radio frequency (RF) port. The gateway may be configured for processing legacy RFoG signals in an upstream and a downstream direction and for at least one of generating or processing, via the express ports on the modem, RFoG signals in an extended spectrum beyond 42 MHz in the upstream direction and beyond 1000 MHz in the downstream direction.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: November 13, 2018
    Assignee: ARRIS Enterprises LLC
    Inventors: Zoran Maricevic, Marcel F. Schemmann, John Ulm
  • Patent number: 10122470
    Abstract: A receiver for an optical communications system which corrects distortion of a received signal. A clock recovery system utilizing a feedback and feedforward system are provided. The feedback loop comprises a phase detector and a clock source, while the feedforward loop comprises the phase detector and a delay element for delaying the output of distortion correction system. The feedback loop has a significantly lower bandwidth than the feedforward path. There are also provided methods of optimizing tap weights and of acquiring initial tap weights.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: November 6, 2018
    Assignee: Cisco Technology, Inc.
    Inventor: Christopher Fludger
  • Patent number: 10088733
    Abstract: A segmented traveling wave Mach Zehnder optical modulator is described. The segmented traveling wave Mach Zehnder optical modulator may comprise two or more radio frequency (RF) segments, and each RF segment may be configured to support a modulating RF signal. The modulating RF signals may be configured to modulate an optical signal propagating along an optical path of the segmented traveling wave Mach Zehnder optical modulator. The RF modulating signal in the second RF segment may be generated by amplifying the modulating RF signal of the first RF segment, using an RF amplifier. The RF amplifier may be configured to amplify a band-pass spectral portion of the modulating RF signal.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: October 2, 2018
    Assignee: Acacia Communications, Inc.
    Inventors: Christopher Doerr, Ricardo Aroca, Long Chen
  • Patent number: 10079644
    Abstract: An out-of-band (OOB) signal detector is disclosed. The OOB signal detector may include a first node configured to receive an alternating current (AC) portion and a direct current (DC) portion of an electrical signal. The AC portion may include modulated OOB data carried by the electrical signal. The OOB signal detector may also include a current to voltage processing circuit configured to extract the AC portion of the electrical signal. The OOB signal detector may additionally include a limiting amplifier circuit configured to receive the extracted AC portion and to generate an amplified signal based on the extracted AC portion. The OOB signal detector may further include an analog-to-digital convertor circuit configured to sample the amplified signal and to generate a digital sample that represents the modulated OOB data.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: September 18, 2018
    Assignee: FINISAR CORPORATION
    Inventors: Andrew Zocher, Theron Jones, Lucy Hosking
  • Patent number: 10069569
    Abstract: The present disclosure discloses a connectivity identification system for identifying connectivity in a OFC network (100) in a central office. The connectivity identification system comprises a transducer device (101) and an ultrasound communicator (107). When the transducer device (101) is connected to a first node (102), the ultrasound communicator (107) is configured to transmit an ultrasound signal modulated with a unique identifier, through an outer jacket of a Fiber Optic (FO) patch cord, connected between a transmitting port (105) of the first node (102) and a receiving port (106) of a second node (103). When the transducer device (101) is connected to the second node, the ultrasound communicator (107) is configured to receive the ultrasound signal from the transceiver unit (301), demodulate the ultrasound signal to retrieve the unique identifier and identify the receiving port (106) based on the demodulated unique identifier.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: September 4, 2018
    Assignee: Wipro Limited
    Inventors: Swapnil Prakash Narayan Srivastava, Ujwal Kapoor
  • Patent number: 10069619
    Abstract: A method of performing optical serial-to-parallel conversion of an optical signal includes performing phase modulation of the optical pulse stream and outputting a phase-modulated optical signal as a result thereof. The method also includes performing optical switching of the phase-modulated optical signal by optical switches connected to each other in a series relationship on a signal path. The method further includes performing optical switching of a reference optical clock signal by optical switches connected to each other in a series relationship on a reference path.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: September 4, 2018
    Assignee: ROCKWELL COLLINS, INC.
    Inventors: Raymond Zanoni, Kim S. Jepsen, Mark A. Laliberte, Oliver S. King
  • Patent number: 10050732
    Abstract: A method and a device are provided for processing data in an optical network. The method includes the steps of events of a login scan are recorded by a first optical network element; the events are conveyed to a second optical network element; and the events are processed by the second optical network element. A communication system is described that includes the device.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: August 14, 2018
    Assignee: Xieon Networks S.a.r.l.
    Inventors: Thomas Treyer, Karl Kloppe
  • Patent number: 10033477
    Abstract: A system includes an optical Y-junction coupler to receive a first modulated optical signal on a wide input path of the optical Y-junction coupler and to receive a second modulated optical signal on a narrow input path of the optical Y-junction coupler, wherein the optical Y-junction coupler generates a combined optical signal from signals received on the wide input path and the narrow input path. A multimode waveguide receives the combined optical signal from the optical Y-junction coupler and propagates a spatially multiplexed optical output signal along a transmission path.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: July 24, 2018
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Alexandre M Bratkovski, Jacob Khurgin, Wayne Victor Sorin, Michael Renne Ty Tan
  • Patent number: 10019118
    Abstract: An optical signal output apparatus includes: a switch having a first state or a second state in accordance with user's operation; and an optical signal output section that outputs a low-level optical signal when the switch is in the first state, whereas outputting a high-level optical signal when the switch is in the second state.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: July 10, 2018
    Assignee: SONY CORPORATION
    Inventor: Motoki Kubo
  • Patent number: 10020888
    Abstract: An optical transmitter may generate a first optical signal having a first wavelength and a second optical signal having a second wavelength. The optical transmitter may output the first and second optical signals to a link without performing a multiplexing operation. The optical transmitter may output part of the first optical signal to the link while part of the second optical signal is being output to the link. An optical receiver may receive the first and second optical signals, via the link, as separate optical signals. The optical receiver may receive part of the first optical signal from the link while part of the second optical signal is being received from the link. The optical receiver may provide the first and second optical signals to a photodetector array that includes a first photodetector to detect the first optical signal and a second photodetector to detect the second optical signal.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: July 10, 2018
    Assignee: Juniper Networks, Inc.
    Inventors: Gunes Aybay, Valery Kugel
  • Patent number: 10014942
    Abstract: A fiber optic tap system includes a first receiver module having an input port configured to receive an optical fiber. The first receiver module is operable to convert a received optical signal to an electrical signal. A first transmitter module is coupled to receive the electrical signal from the first receiver module and convert the received electrical signal to an optical signal. The first transmitter module has an output port for outputting the optical signal. A first tap module is coupled to receive the electrical signal from the first receiver module.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: July 3, 2018
    Assignee: COMMSCOPE TECHNOLOGIES LLC
    Inventors: Joseph C. Coffey, Paul John Pepe
  • Patent number: 10003406
    Abstract: An optical level control apparatus includes an input port, an output port, an optical device to assume a state of outputting light inputted to the input port from the output port and a state of not outputting the light inputted to the input port from the output port; a detector to detect an intensity of the light inputted to the input port, and a control unit to detect an input of an optical burst signal to the input port on the basis of a result of detecting the intensity of the light and to control the optical device so that the signal, in which to eliminate a field extending up to an elapse of a period of first time equal to or shorter than laser ON time period of the signal from a head of the signal with its input being detected, is output from the output port.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: June 19, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Setsuo Yoshida, Keisuke Harada
  • Patent number: 9995890
    Abstract: Thermal management of a locker etalon in a transmitter optical subassembly (TOSA). In one example embodiment, a TOSA includes a case, a laser positioned within the case and electro-thermally connected to the case, a locker etalon positioned in the case and thermally connected to the case, and a thermoelectric cooler (TEC) positioned within the case and in thermal contact with both the laser and the locker etalon.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: June 12, 2018
    Assignee: FINISAR CORPORATION
    Inventors: Saeid Azemati, Farhang Sakhitab, Jamie Lars Silva