Patents Examined by M. R. Sedighian
  • Patent number: 11368225
    Abstract: A satellite relay communication system includes a central terminal. The central terminal includes a passive optical router and a multiplexer. The satellite relay communication system also includes remote terminals, each remote terminal including an optical transceiver configured to send optical signals to the passive optical router, configured to receive optical signals from the passive optical router, and configured to multiplex optical signals received from the passive optical router.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: June 21, 2022
    Inventor: Glen Peter Koste
  • Patent number: 11128374
    Abstract: The invention relates to base stations in communication networks. In more particular the invention relates to cellular base stations such as 3G/4G and WLAN base stations. Some or all of the aforementioned advantages of the invention are accrued with a fully photonic base station (200) that powers itself with solar photons, provides radio network access and relays an optical photonic beam (220, 221, 230, 231) through air encoded with the data from radio signals of computer users and mobile phone users to the Internet and the global telecommunication network. A system engineer can build a network with the inventive base stations in a matter of days. He simply walks to the roof of houses and points the optical beams to other base stations in adjacent houses.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: September 21, 2021
    Inventor: Mikko Vaananen
  • Patent number: 10236977
    Abstract: A computerized system and method for managing a passive optical network (PON) is disclosed. The system includes a detection and analysis module adapted for receiving uploaded measurement data from an optical line terminal (OLT) and at least one optical network terminal (ONT), and at least one of technical tools data, service failure data, and outside plant data. The detection and analysis module is adapted for determining a source of failure or potential failure in the PON by correlating the uploaded measurement data and the at least one of technical tools data and service failure data with information stored in a memory medium for the OLT and each ONT.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: March 19, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Kapil Shrikhande, Kent George McCammon, Kevin Xiangkai Meng, Raghvendra Savoor
  • Patent number: 10218434
    Abstract: The invention relates to a device and a method performed by the device of monitoring an optical fibre link. The method provided for monitoring an optical fibre link comprises generating a monitoring signal used for monitoring the optical fibre link, combining the generated monitoring signal with a data signal to be transmitted over the optical fibre link, detecting backscattering of the monitoring signal from the optical fibre link, comparing the detected backscattered monitoring signal with an estimated monitoring signal backscattered along the optical fibre link, and determining, based on the comparison, at least one location along the optical fibre link where the monitoring signal is backscattered, and signal loss caused by the backscattering.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: February 26, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jean Pierre von der Weid, Gustavo Castro do Amaral, Renata Goldman Leibel, Diego Rodrigo Villafani Caballero
  • Patent number: 10204514
    Abstract: A wireless optical communication receiver is provided. The optical receiver includes an arrangement of wavelength shifting fibers preferably encased within a protective shroud. The wavelength shifting fibers provide an efficient method for capturing photons of light that strike them. Photons may strike the fibers as they first pass through a clear lens in the shroud or may strike the fibers after they are concentrated and focused by an embedded ring or hyperbolic mirror. The wireless optical receiver may be attached to a mobile vehicle in order to facilitate teleoperation of that vehicle.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: February 12, 2019
    Assignee: Penguin Automated Systems Inc.
    Inventors: Gregory Baiden, Alberto Rui Frutuoso Barroso
  • Patent number: 10206018
    Abstract: A transmission method and system for an optical burst transport network are disclosed in the present document. The method includes: acquiring a topology of a mesh OBTN network, and generating one or more logical sub-networks according to the topology of the mesh OBTN network; a predetermined master node in the mesh OBTN network updating bandwidth maps for all logical sub-networks; the predetermined master node is a node, which all control channels pass through, in all the nodes of the mesh OBTN network.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: February 12, 2019
    Inventor: Xun Chen
  • Patent number: 10200126
    Abstract: Aspects of the subject disclosure may include, for example, a coupler that includes a tapered collar that surrounds a transmission wire. A coaxial coupler, that surrounds at least a portion of the transmission wire, guides an electromagnetic wave to the tapered collar. The tapered collar couples the electromagnetic wave to propagate along an outer surface of the transmission wire. Other embodiments are disclosed.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: February 5, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Irwin Gerszberg, Farhad Barzegar, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 10193651
    Abstract: It is difficult to improve the wavelength-band utilization rate of an optical network as a whole while operating the optical network stably; and therefore, an optical network controller according to an exemplary aspect of the present invention includes optical wavelength region setting means for setting a wavelength region in an optical transmission line between a plurality of optical nodes composing an optical network using wavelength division multiplexing system dividing the wavelength region into consecutive regions of a first wavelength region and a second wavelength region; optical path setting means for setting a first optical path in the first wavelength region and a second optical path in the second wavelength region, the second optical path differing from the first optical path in a route; and control unit for instructing the plurality of optical nodes on a central wavelength and a usable band of signal light for the optical node to transmit based on a setting by the optical path setting means.
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: January 29, 2019
    Inventors: Hitoshi Takeshita, Shinsuke Fujisawa, Ryuichi Ikematsu, Akio Tajima, Tomoyuki Hino
  • Patent number: 10181905
    Abstract: A fiber optic distribution terminal includes a cable spool rotatably disposed within an enclosure; an optical power splitter and a termination region carried by the cable spool; an optical cable deployable from the enclosure by rotating the cable spool by pulling on a connectorized end of the optical cable; and splitter pigtails extending between the optical power splitter and the termination region. One fiber of the optical cable extending between the connectorized end and the splitter input. The other fibers of the optical cable extend to a multi-fiber adapter.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: January 15, 2019
    Assignees: ADC Communications (Australia) Pty Limited, CommScope Connectivity Australia Pty Ltd.
    Inventors: Paul David Hubbard, Wesley Edward Oxlee
  • Patent number: 10181906
    Abstract: A gain level control circuit in a wireless distribution system (WDS) is provided. The digital level control circuit receives a number of first digital communications signals having a number of first digital amplitudes and generates a number of second digital communications signals having a number of second digital amplitudes. When a selected second digital amplitude approaches a full-scale digital amplitude represented by a predefined number of binary bits, the gain level control circuit determines a selected first digital communications signal having a selected first digital amplitude causing the selected second digital amplitude to exceed the full-scale digital amplitude and adjusts the selected first digital amplitude to reduce the selected second digital amplitude to lower than or equal to the full-scale digital amplitude.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: January 15, 2019
    Assignee: Corning Optical Communications Wireless Ltd
    Inventor: Dror Harel
  • Patent number: 10181899
    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: June 29, 2018
    Date of Patent: January 15, 2019
    Inventors: Shu Hao Fan, Damian Alfonso Morero, Mario Rafael Hueda
  • Patent number: 10177843
    Abstract: A network control apparatus includes a processor. The processor calculates a first OSNR corresponding to an allowable limit BER from an OSNR yield strength curve of a transmission end in a node of a transmission end. The processor acquires a reception BER of a second node of a reception end, and calculates a second OSNR corresponding to the reception BER from the OSNR yield strength curve of the transmission end. The processor calculates a first noise intensity corresponding to the allowable limit BER from the first OSNR. The processor calculates a second noise intensity corresponding to the reception BER from the second OSNR. The processor calculates a noise intensity margin, based on the first noise intensity and the second noise intensity.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: January 8, 2019
    Inventors: Tomohiro Yamauchi, Shoichiro Oda
  • Patent number: 10171175
    Abstract: An apparatus for despreading in an optical domain configured to split a received optical signal into a first optical signal and a second optical signal, perform phase deflection on the second optical signal, output a third optical signal, perform phase deflection on the first optical signal and the third optical signal, output a fourth optical signal and a fifth optical signal to a balanced receiver, and superimpose the fourth optical signal and the fifth optical signal to generate a first electrical signal. A multiplication operation in conventional code division multiple access (CDMA) despreading is transferred from an electrical domain to an optical domain such that a chip rate can be easily raised to 20 gigahertz (GHz) or even to 25 GHz, a maximum rate of 100 gigabits per second (Gbps) can be provided in a single wavelength, and a user requirement for high bandwidth can be met.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: January 1, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Liming Fang, Lei Zhou, Meng Sui, Xiaofeng Zhang
  • Patent number: 10158429
    Abstract: In order to suppress the deterioration of receiving characteristics, even in cases where a receiving band of an optical receiver is insufficient with respect to a bit rate of a received signal, an optical receiving apparatus 10 according to the present invention comprises an optical equalizer 20 that provides a light spectrum shaping for spreading an effective band width of an inputted optical signal and an optical receiver 30 that electrically converts and receives the optical signal provided with the light spectrum shaping.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: December 18, 2018
    Assignee: NEC Corporation
    Inventor: Kohei Nakamura
  • Patent number: 10154323
    Abstract: A network appliance may include a signal splitter that splits an incoming signal into multiple portions. The signal splitter can direct one portion of the incoming signal to a switching fabric and another portion of the incoming signal to an optical switch. By monitoring the power intensity of the portion of the incoming signal received by the switching fabric, the network appliance can seamlessly switch between a bypass traffic path and a pass-through traffic path without losing network traffic caused by gaps in network connectivity. Such a configuration also enables the network appliance to maintain an accurate record of the logical connectivity state even when the network appliance is in the bypass state (i.e., when network traffic bypasses the switching fabric of the network appliance).
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: December 11, 2018
    Assignee: Gigamon Inc.
    Inventor: Sitti Amarittapark
  • Patent number: 10142012
    Abstract: A dedicated satellite to reduce the cost and increase the rate and reliability of data transmission from space to ground is provided. For each client satellite producing data in Earth orbit, a dedicated relay satellite is provided. The relay satellite may fly near the client satellite and receive data from the client satellite by RF communication. The relay satellite may transmit the data to a ground terminal or to another satellite using a laser communication system. Because the relay satellite is not physically connected to the client satellite, the attitude-control requirements of an optical communication system are not imposed on the client satellite. The relay satellite may also be deployed from the client satellite. The relay satellite may allow downlinking large amounts of data for new satellite operators without an existing ground network and for established satellite operators seeking higher data rates, lower latency, or reduced ground system operating costs.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: November 27, 2018
    Inventor: Richard P. Welle
  • Patent number: 10135221
    Abstract: Optical amplifier assembly for spatial division multiplexing (SDM) optical communication systems. Each optical amplifier assembly includes a single pump assembly configured for causing amplification of signals traveling on separate fiber paths in different directions. Each fiber path includes a plurality of spatial dimensions. The single pump assembly includes a plurality of pump sources to provide redundancy and the optical amplifier assembly further includes splitters for splitting outputs of the pump sources to amplifiers coupled to the different spatial dimensions. Different modulation formats may be used on the different spatial dimensions with different pump power being provided to each of the modulation formats. Amplifiers with complementary outputs may be coupled to average out gain deviations.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: November 20, 2018
    Inventors: Yu Sun, Oleg Sinkin, Maxim A. Bolshtyansky, Alexei N. Pilipetskii, Dmitri Foursa
  • Patent number: 10133001
    Abstract: An optical fiber cable for bi-directional communication of optical signals is disclosed. The optical fiber cable has a primary multimode optical fiber with an alpha value of ? and is concatenated to a compensating fiber with an alpha value ?, wherein 1.2?(????)??0.1. The optical fiber cable has a reach between 50 m and 800 m. Modules that employ a plurality of concatenated primary and compensating optical fibers are also disclosed. A bi-directional optical fiber communications system that operates at two different wavelengths is also disclosed.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: November 20, 2018
    Assignee: Corning Optical Communications LLC
    Inventors: Scott Robertson Bickham, Xin Chen, John Douglas Coleman, Ming-Jun Li
  • Patent number: 10128946
    Abstract: A visible light communication device includes a light-emitting unit, a switch-mode light-emitting diode (LED) driver, a synthesizing circuit, and a path selection circuit. The switch-mode LED driver provides a driving current for driving the light-emitting unit. The synthesizing circuit synthesizes a data signal and a dimming signal to form a synthesized signal. According to a data frequency and a dimming ratio obtained from one or more path selection information, the path selection circuit selects to turn on a bypass current modulation unit to inject the synthesized signal to the bypass current modulation unit along one path and the bypass current modulation unit controls the light-emitting unit according to the synthesized signal, or selects to inject the synthesized signal to the switch-mode LED driver along another path and the switch-mode LED driver controls the light-emitting unit according to the synthesized signal.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: November 13, 2018
    Inventors: Yu-Chen Lee, Chueh-Hao Yu, Jyun-Liang Lai
  • 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