Patents Examined by M. R. Sedighian
  • Patent number: 10128953
    Abstract: An optical transceiver configured to operate in a host device includes an electrical interface communicatively coupled to the host device to interface electrically with the host device, wherein the optical transceiver is compliant with a Multi-Source Agreement (MSA) which is supported by the host device; optical transceiver components communicatively coupled to the electrical interface, wherein the optical transceiver components are configured to optically interface signals with a second optical transceiver to form an optical link; and electronic dispersion compensation circuitry communicatively coupled to the optical transceiver components and configured to electronically compensate for optical fiber chromatic and/or polarization mode dispersion associated with the optical link, separate and independent from the host device.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: November 13, 2018
    Assignee: Menara Networks, Inc.
    Inventors: Siraj Nour Elahmadi, Salam Elahmadi, Adam R. Hotchkiss, Gabriel E. Cardona
  • Patent number: 10126510
    Abstract: A detection device is provided with a holding body that holds a light-receiving module, an optical fiber pigtail, and a lens. The light-receiving module is provided with a light-receiving element and a stem that supports the light-receiving element. The lens collimates an input light from one end of an input fiber and guides a portion of the input light to the light-receiving element. The lens separates the input light into a transmitted light and a reflected light, guiding the transmitted light to the light-receiving element and guiding the reflected light to an output fiber. The light-receiving element has a center of a light-receiving surface thereof disposed in a position away from an axis of the stem.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: November 13, 2018
    Assignee: Santec Corporation
    Inventor: Yasuki Sakurai
  • Patent number: 10119714
    Abstract: Systems and methods for remotely controlling infrared (“IR”) enabled appliances via a networked device are described. The technology enables one or multiple users to control, monitor, and manage their appliances (e.g., air conditioners, television sets, multimedia systems, window curtains, etc.) both locally and remotely, irrespective of the users' location or their line of sight. In various embodiments, the technology includes a device with integrated Wi-Fi and IR subsystems connected via a cloud platform to a user application interface that can control appliances, generate analytics, schedule automatic operation, and perform smart learning operation.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: November 6, 2018
    Assignee: Cielo WiGle Inc.
    Inventors: Waseem Amer, Anees Ahmed Jarral
  • Patent number: 10110317
    Abstract: Apparatus and method for compensating for transmitter errors in an optical communication system are provided. In certain configurations herein, a receiver is provided for processing an analog signal vector representing an optical signal received from a transmitter. The receiver includes an analog front-end that converts the analog signal vector into a digital signal vector including a digital representation of an I component and a Q component of the optical signal. The receiver further includes a digital signal processing circuit configured to process the digital signal vector to recover data, and the digital signal processing circuit includes a transmitter error compensation system that compensates the digital signal vector for at least one of a transmit skew error of the transmitter or a modulator biasing error of the transmitter.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: October 23, 2018
    Assignee: INPHI CORPORATION
    Inventors: Damian Alfonso Morero, Mario Rafael Hueda, Shu Hao Fan
  • Patent number: 10110313
    Abstract: The present invention discloses an optical switching apparatus, an optical cross-connect node, and an optical signal switching method. The optical switching apparatus includes: N input ports, N OAM modulators in a one-to-one correspondence with the N input ports, an OAM splitter, and M output ports, where the M output ports are in a one-to-one correspondence with M OAM modes; a first input port of the input ports is configured to input a first optical signal, a target output port of the first optical signal is a first output port; a first OAM modulator corresponding to the first input port modulates the first optical signal into an optical signal of a first OAM mode corresponding to the first output port; the OAM splitter transmits, to the first output port, the first optical signal received from the first OAM modulator; and the first output port outputs the first optical signal.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: October 23, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Dawei Wang
  • Patent number: 10109981
    Abstract: Monolithic asymmetric optical waveguide grating resonators including an asymmetric resonant grating are disposed in a waveguide. A first grating strength is provided along a first grating length, and a second grating strength, higher than the first grating strength, is provided along a second grating length. In advantageous embodiments, the effective refractive index along first grating length is substantially matched to the effective refractive index along second grating length through proper design of waveguide and grating parameters. A well-matched effective index of refraction may permit the resonant grating to operate in a highly asymmetric single longitudinal mode (SLM). In further embodiments, an asymmetric monolithic DFB laser diode includes front and back grating sections having waveguide and grating parameters for highly asymmetric operation.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: October 23, 2018
    Assignee: Intel Corporation
    Inventors: Matthew Sysak, Jock Bovington
  • Patent number: 10090634
    Abstract: A laser communication apparatus is provided for sending and receiving messages. A processor encodes user messages for a modulator. The modulator provides control signals related to the encoded message to a plurality of seed lasers. Each seed laser can provide light at a different wavelength. Amplifiers are joined to amplify light from the seed lasers. Amplified light is multiplexed together. Multiplexed light is transmitted by a collimating lens along a target vector. A portion of the light can be monitored by a first detector. A telescope receives light from the target vector and provides focused light to a second detector. The second detector provides a signal responsive to the received light to the processor. The processor decodes this signal to provide the received message.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: October 2, 2018
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Tariq Manzur
  • Patent number: 10090933
    Abstract: The receiver 11 for self-homodyne detection comprises a coherent detection system and a direct detection system. The receiver comprises a polarization splitter 13, a first splitter 15, a 90 degree polarization rotor 17, a hybrid detector 19, a first balanced detector 21, and a processor 23.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: October 2, 2018
    Assignee: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
    Inventors: Luis Ruben Soares, Ben Puttnam, Mendinueta Jose Manuel Delgado, Yoshinari Awaji, Naoya Wada
  • Patent number: 10091566
    Abstract: Embodiments of the present invention provide a method and an apparatus for virtualizing a passive optical network, and a passive optical network virtualization system. The method includes: receiving a virtualized passive optical network creation message, where the virtualized passive optical network creation message includes an ID of a to-be-created VPON and at least one wavelength flow identifier ?-flow ID; and establishing, according to the VPON ID and the at least one ?-flow ID, a communication connection relationship with at least one optical network unit in the virtualized passive optical network identified by the VPON ID. According to the method provided by the embodiments of the present invention, on one hand, complex networking performed to deal with different application scenarios is avoided.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: October 2, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Guikai Peng, Huafeng Lin
  • Patent number: 10075244
    Abstract: Systems for a PLM configured active optical module (AOM) with native and non-native-network element support are provided. A system includes a non-native network element having a first port with a first inventory interface; a first pluggable AOM installed in the first port and coupled to the first inventory interface, where in response to a request to read a table entry the first pluggable AOM provides PLM information to the non-native network element; an extended network element having a second port with a second inventory interface; and a second pluggable AOM installed in the second port and coupled to the second inventory interface, where in response to a request to read a table entry, processing devices provide PLM information to the extended network element.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: September 11, 2018
    Assignee: CommScope Technologies LLC
    Inventor: Joseph C. Coffey
  • Patent number: 10075242
    Abstract: Described herein are ground based subsystems, and related methods, for use in transmitting an optical feeder uplink beam to a satellite that is configured to receive the optical feeder uplink beam and in dependence thereon produce and transmit a plurality of RF service downlink beams within a specified RF frequency range to service terminals. Also described herein are space based subsystems of a satellite, and related methods, for use in transmitting a plurality of RF service downlink beams within a specified RF frequency range to service terminals. Beneficially certain embodiments eliminate the need for any frequency down-converters or any other type of frequency conversion equipment in a space segment forward link equipment. Also described herein is space segment return link equipment, and related methods, for use in transmitting an optical feeder downlink beam to a ground based subsystem, as well as ground based return link equipment thereof.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: September 11, 2018
    Assignee: SPACE SYSTEMS/LORAL, LLC
    Inventors: Ghislain Turgeon, Vijaya Gallagher, Leah Wang
  • Patent number: 10073230
    Abstract: An optical module includes an optoelectronic transceiver. The optical modules includes a heat sink. The heat sink includes a heat radiating element aligned along a length of the heat sink. The heat sink radiates heat received from the optoelectronic transceiver. The optical modules includes a housing. The optoelectronic transceiver is encapsulated by the heat sink and the housing.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: September 11, 2018
    Assignee: Arista Networks, Inc.
    Inventors: Robert Wilcox, Richard Hibbs, Warren Meggitt, Andreas Bechtolsheim, Jiayi Wu, Christophe Metivier
  • Patent number: 10069565
    Abstract: Described herein are ground based subsystems, and related methods, for use in transmitting an optical feeder uplink beam to a satellite that is configured to receive the optical feeder uplink beam and in dependence thereon produce and transmit a plurality of RF service downlink beams within a specified RF frequency range to service terminals. Also described herein are space based subsystems of a satellite, and related methods, for use in transmitting a plurality of RF service downlink beams within a specified RF frequency range to service terminals. Beneficially certain embodiments eliminate the satellite to perform any RF frequency conversions upstream of a channelizer of the space based forward link subsystem on the satellite. Also described herein is space segment return link equipment, and related methods, for use in transmitting an optical feeder downlink beam to a ground based subsystem, as well as ground based return link equipment thereof.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: September 4, 2018
    Assignee: SPACE SYSTEMS/LORAL, LLC
    Inventors: Vijaya Gallagher, Ghislain Turgeon
  • Patent number: 10050740
    Abstract: A single-wavelength light path is selected between a source access node and a destination access node of a wavelength-division multiplexed optical network, including selecting an illuminated wavelength of the light path and selecting a start time and duration for a data transfer that would not interfere with other data transfers. If no start time/wavelength combination is available with duration sufficient to transport the data, an additional wavelength is automatically selected, based on modeling, that would not impair traffic being carried by other wavelengths in the network, and without a time-consuming manual process of the prior art. The scheduling process may include selecting a set of optical fibers, a wavelength, a start time and an end time to transport proposed traffic. A novel scheduler avoids checking every possible start time, thereby saving significant processing time. The scheduler schedules single-wavelength light paths, rather than relying on complex wavelength shifting schemes.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: August 14, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Lei Zhang, Vincent W. S. Chan
  • Patent number: 10050736
    Abstract: An integrated apparatus with optical/electrical interfaces and protocol converter on a single silicon substrate. The apparatus includes an optical module comprising one or more modulators respectively coupled with one or more laser devices for producing a first optical signal to an optical interface and one or more photodetectors for detecting a second optical signal from the optical interface to generate a current signal. Additionally, the apparatus includes a transmit lane module coupled between the optical module and an electrical interface to receive a first electric signal from the electrical interface and provide a framing protocol for driving the one or more modulators. Furthermore, the apparatus includes a receive lane module coupled between the optical module and the electrical interface to process the current signal to send a second electric signal to the electrical interface.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: August 14, 2018
    Assignee: INPHI CORPORATION
    Inventor: Radhakrishnan L. Nagarajan
  • Patent number: 10038498
    Abstract: Apparatus and method for transmitter alignment in an optical communication system are provided. In certain configurations, a method of correcting for transmitter skew is provided. The method includes generating an optical signal using a transmitter based on an in-phase (I) component and a quadrature-phase (Q) component of a transmit signal, the optical signal having a baud rate that is based on a timing tone. The method further includes receiving the optical signal as an input to a receiver, and generating a signal vector representing the optical signal using the receiver. The signal vector includes an I component and a Q component. The method further includes calculating a power of the timing tone based on processing the signal vector using a tone power calculator of the receiver, and correcting for a skew of the transmitter based on the calculated power.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: July 31, 2018
    Assignee: INPHI CORPORATION
    Inventors: Shu Hao Fan, Damian Alfonso Morero, Mario Rafael Hueda
  • Patent number: 10038494
    Abstract: A method and apparatus for pro-active protection of packet-optical transport in a software defined network (SDN) controller are disclosed herein. The SDN controller may define a proactive protection threshold criterion based on based on a plurality of optical system performance metrics and may collect at least one measurement for each of the metrics. The SDN controller may then determine whether the proactive protection threshold criterion is met based on at least one of the collected measurements. Further, the SDN controller may select a protection mechanism and define a protection threshold criterion on a condition that the proactive protection threshold criterion is met. Also, the SDN controller may initiate proactive protection events based on the selected protection mechanism. The SDN controller may determine whether the protection threshold criterion is met. The SDN controller may implement one or more protection events on a condition that the protection threshold criterion is met.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: July 31, 2018
    Assignee: Infinera Corporation
    Inventors: Loukas Paraschis, Parthiban Kandappan, Marco Sosa, Abhinava Shivakumar Sadasivarao
  • Patent number: 10033478
    Abstract: Methods, systems, and devices are disclosed for using optical modes in optical waveguides to carry different optical communication signals. In one aspect, an optical device for optical MDM in optical communications includes an optical waveguide configured to support multiple optical waveguide modes and to carry light of different optical communication channels in different optical waveguide modes, respectively, of the multiple optical waveguide modes. The optical device includes an optical resonator configured to be capable of carrying an optical communication channel in one optical resonator mode and optically coupled to the optical waveguide to selectively couple the optical communication channel in the optical resonator into the optical waveguide to add a channel into the optical waveguide via optical mode division multiplexing. In another aspect, an optical mode division demultiplexing can be performed by coupling an optical waveguide and an optical resonator.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: July 24, 2018
    Assignee: Cornell University
    Inventors: Michal Lipson, Lian-Wee Luo, Lucas Heitzmann Gabrielli
  • Patent number: 10034070
    Abstract: An array of columns and rows of host server devices is mounted in a row of racks. Each device has a host processor and an exact-match packet switching integrated circuit. Packets are switched within the system using exact-match flow tables that are provisioned by a central controller. Each device is coupled by a first cable to a device to its left, by a second cable to a device to its right, by a third cable to a device above, and by a fourth cable to a device below. In one example, substantially all cables that are one meter or less in length are non-optical cables, whereas substantially all cables that are seven meters or more in length are optical cables. Advantageously, each device of a majority of the devices has four and only four cable ports, and connects only to non-optical cables, and the connections involve no optical transceiver.
    Type: Grant
    Filed: September 6, 2015
    Date of Patent: July 24, 2018
    Assignee: Netronome Systems, Inc.
    Inventor: J. Niel Viljoen
  • Patent number: 10027437
    Abstract: A mode-multiplexing control method, and a transmission apparatus and reception apparatus for the same, the mode-multiplexing control method performed by the transmission apparatus, the mode-multiplexing control method including measuring data traffic, determining a transmission mode count to be used based on the measured data traffic, and transmitting data to a reception apparatus through an optical line in transmission modes corresponding to the determined transmission mode count.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: July 17, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Rok Moon, Changyo Han