Patents Examined by Darren E Wolf
  • Patent number: 11515945
    Abstract: A method of RF signal processing comprises receiving an incoming RF signal at each of a plurality of antenna elements that are arranged in a first pattern. The received RF signals from each of the plurality of antenna elements are modulated onto an optical carrier to generate a plurality of modulated signals that each have at least one sideband. The modulated signals are directed along a corresponding plurality of optical channels with outputs arranged in a second pattern corresponding to the first pattern. A composite optical signal is formed using light emanating from the outputs of the plurality of optical channels. Non-spatial information contained in at least one of the received RF signals is extracted from the composite signal.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: November 29, 2022
    Assignee: Phase Sensitive Innovations, Inc.
    Inventors: Chris Schuetz, Janusz Murakowski, Garrett Schneider, Shouyuan Shi, Dennis Prather
  • Patent number: 11509538
    Abstract: An interconnect as a switch module (“ICAS” module) comprising n port groups, each port group comprising n?1 interfaces, and an interconnecting network implementing a full mesh topology where each port group comprising a plurality of interfaces each connects an interface of one of the other port groups, respectively. The ICAS module may be optically or electrically implemented. According to the embodiments, the ICAS module may be used to construct a stackable switching device and a multi-unit switching device, to replace a data center fabric switch, and to build a new, high-efficient, and cost-effective data center.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: November 22, 2022
    Inventor: David I-Keong Wong
  • Patent number: 11502757
    Abstract: A method of manufacturing a device with a optical component disposed thereon, including following steps of: preparing a substrate, the substrate including a signal guide and an electric conductive structure; and mounting an optical component on the substrate and corresponding a light transmission face of the optical component to the signal guide, wherein the optical component and the substrate is connected by an adhesive material and the optical component is electrically connected with the electric conductive structure. A transmission device being made by the method of manufacturing the device with the optical component disposed thereon as described above is further provided.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: November 15, 2022
    Assignee: QUANTUMZ INC.
    Inventors: Chun-Chieh Chen, Ming-Che Hsieh, Po-Ting Chen, Chun-I Wu
  • Patent number: 11502755
    Abstract: A system for creating an adjustable delay in an optical signal. The system has an input interface for receiving an optical input signal. The system has a first optical modulator configured to shift the frequency of the optical input signal depending on a setting of the first optical modulator, thereby generating a modulated optical signal. The system includes at least two frequency selective reflectors configured to reflect the modulated optical signal, thereby providing a reflected signal. The system has a control circuit that adapts the setting of the first optical modulator such that a frequency shift of the optical input signal introduced by the first optical modulator is set by the control circuit. The frequency shift introduced by the first optical modulator corresponds to an operational frequency of one of the at least two frequency selective reflectors associated with the setting of the first optical modulator.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: November 15, 2022
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Benedikt Simper, Martin Vossiek, Christian Carlowitz, Peter Tschapek
  • Patent number: 11502747
    Abstract: A performance monitor configured to unify at least two different signal-quality estimates into a single performance metric such that a systematic error associated with the performance metric can be approximately constant or smaller than a specified fixed limit over a significantly wider range of data-link conditions than that of a conventional performance metric of similar utility. In an example embodiment, the performance metric can be based on a weighted sum of two different SNR estimates, obtained from an error count of the receiver's FEC decoder and from a constellation scatter plot generated using the receiver's symbol decoder, respectively. Different weights for the weighted sum may be selected for different data-link conditions, e.g., using SNR thresholding, analytical formulas, or pre-computed look-up tables. The performance metric may be supplied to a control entity and considered thereby as a factor in a possible decision to trigger protective switching and/or a transponder-mode change.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: November 15, 2022
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Camille Delezoide, Petros Ramantanis
  • Patent number: 11496219
    Abstract: A common method of down converting a received RF signal mixes the received RF signal with a LO signal to create a beat signal. Exemplary embodiments can address multiple simultaneously received RF signals which beat within receiver electronics at frequencies similar to that of the down converted signals. An RF mixer is disclosed using a photonic circuit arranged to impose the RF signal and the LO signal onto separate optical beams. An arrangement provides a beam carrying the RF signal to a first optical input of a balanced photodiode receiver and another beam carrying the RF and LO signals to a second optical input of the balanced photodiode receiver. Any beat products formed between different RF signals will be cancelled out at the electrical output of the balanced photodiode receiver.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: November 8, 2022
    Assignee: ELONARDO UK LTD
    Inventors: Ian Flint, Taimur Mirza, Shyqyri Haxha
  • Patent number: 11496214
    Abstract: An extinction ratio testing system (10) includes a microcontroller (102), an extinction ratio tester (104), and a thermostat (106). The microcontroller (102) controls the thermostat (106) to maintain an optical transceiver module (20) at a predetermined high temperature, and then the microcontroller (102) controls the extinction ratio tester (104) to test an extinction ratio of the optical transceiver module (20). If the extinction ratio is lower than a standard extinction ratio, the microcontroller (102) controls the optical transceiver module (20) to increase a laser operating current (212) of the optical transceiver module (20) to increase the extinction ratio.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: November 8, 2022
    Assignee: JESS-LINK PRODUCTS CO., LTD.
    Inventors: Chi-Hsien Sun, Chieh-Ming Cheng
  • Patent number: 11496218
    Abstract: Optical communication modules and associated methods and computer program products for performing network communication security are provided. An example optical module includes a substrate, a first optoelectronic component supported by the substrate configured for operation with optical signals having a first wavelength, and a second optoelectronic component supported by the substrate configured for operation with optical signals having a second wavelength. The module further includes an optical communication medium defining a first end in optical communication with the first optoelectronic component and the second optoelectronic component and a second end. The module also includes security circuitry operably connected with the first optoelectronic component and the second optoelectronic component. The security circuitry determines the presence of a noncompliant component coupled with the optical communication medium at the second end based upon operation of the second optoelectronic component.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: November 8, 2022
    Assignee: MELLANOX TECHNOLOGIES, LTD.
    Inventors: Elad Mentovich, Itshak Kalifa, Hanan Shumacher, Yoram Zer, Yaakov Gridish, Eyal Waldman
  • Patent number: 11487066
    Abstract: A package includes a light emitting portion configured to emit light, a lens including a first lens surface and a second lens surface, a protective layer between the light emitting portion and the first lens surface and that shields the first lens surface from a surrounding environment, and an optical component that redirects light output from the second lens surface. The first lens surface is configured to receive the emitted light from the light emitting portion, the second lens surface is configured output light that has passed through the first lens surface, and the protective layer has a refractive index greater than 1.5.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: November 1, 2022
    Assignee: MELLANOX TECHNOLOGIES, LTD.
    Inventors: Elad Mentovich, Yaakov Gridish, Anna Sandomirsky, Alon Rubinstein, Nimrod Rockman, Dimitrios Kalavrouziotis
  • Patent number: 11469823
    Abstract: A downhole optical communications system provided at a downhole location in use, the downhole communications system being for communicating between the downhole location and an uphole location, such as a surface location. The downhole optical communications system comprises a downhole optical transmitter configured to emit an optical signal for transmission over an optical transmission channel between the uphole location and the downhole optical transmitter; wherein the downhole optical transmitter is configured so as to produce a response to an optical signal received from the optical transmission channel and the downhole optical communications system is configured to determine data represented by the received optical signal from the response produced by the downhole optical transmitter.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: October 11, 2022
    Assignee: Well-Sense Technology Limited
    Inventor: Daniel George Purkis
  • Patent number: 11469818
    Abstract: A modulating circuit adapted to modulate between an energy harvesting mode and a wireless transmitter mode is disclosed which includes a solar cell, an energy-harvesting circuit, a first switch coupling the solar cell to the energy harvesting circuit and controlled by a first control line, a second switch coupling the solar cell to a programmable current source and controlled by a second control line, a transmitter/energy harvesting mode circuit adapted to select between a transmitter mode and an energy harvesting mode, and a symbol-to-current mapping circuit adapted to encode data to be communicated by the solar cell, the symbol-to-current mapping circuit adapted to adjust the programmable current source to thereby provide a metered current to the solar cell.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: October 11, 2022
    Assignee: Purdue Research Foundation
    Inventor: Walter Daniel Leon-Salas
  • Patent number: 11463164
    Abstract: A method for implementing an out-of-band communication channel in a coherent optical access network includes steps (a)-(e). Step (a) includes separating a MAC-layer signal received from a media access control (MAC) layer into an initial communication-channel signal and an initial data-channel signal. Step (b) includes encoding, using a first signal-coding scheme within a transceiver of a coherent passive optical network (PON), the initial communication-channel signal into a communication-channel signal occupying a first frequency band. Step (c) includes encoding, using a second signal-coding scheme within the transceiver, the initial data-channel signal into a data-channel signal occupying a second frequency band not overlapping the first frequency band. Step (d) includes combining the communication-channel signal and the data-channel signal to yield an analog signal.
    Type: Grant
    Filed: July 24, 2021
    Date of Patent: October 4, 2022
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Junwen Zhang, Zhensheng Jia, Curtis D. Knittle, Luis Alberto Campos
  • Patent number: 11456805
    Abstract: A passive dual polarization unit and coherent transceiver and/or receiver including one or more passive dual polarization units are provided. An example passive dual polarization unit includes a polarization splitter configured to split an input signal into a TE mode and TM mode signals; TE/TM splitters each designed to split the TE/TM mode signals into first TE/TM signals and second TE/TM signals; a first TE signal polarization rotation component for receiving the first TE signal and providing a third TM signal having the same magnitude and time dependence as the first TE signal; a first TM signal polarization rotation component for receiving the first TM signal and providing a third TE signal having the same magnitude and time dependence as the first TM signal; and TE/TM couplers that couple the second TE/TM signals and the third TE/TM signals to generate output TE/TM signals.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: September 27, 2022
    Assignee: Mellanox Technologies, Ltd.
    Inventors: Don Becker, Dmitrios Kalavrouziotis, Paraskevas Bakopoulos, Vladimr Iakolev, Elad Mentovich
  • Patent number: 11456814
    Abstract: Automatic optical link calibration systems and methods include an optical node with an Optical Add-Drop Multiplexer (OADM) multiplexer including a channel holder source; an optical amplifier connected to the OADM multiplexer and to a fiber span; an Optical Channel Monitor (OCM) configured to monitor optical spectrum before and after the optical amplifier; and a controller configured to obtain data associated with the fiber span including measurements from the OCM, determine settings of the channel holder source needed to meet a target launch power profile for the fiber span, and configure the channel holder source based on the determined settings.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: September 27, 2022
    Assignee: Ciena Corporation
    Inventors: Choudhury A. Al Sayeed, David C. Bownass, David Atkinson, Scott Kohlert
  • Patent number: 11451293
    Abstract: An unused path through which actual data is not transmitted in a long-distance redundant network can be appropriately detect, and this function is realized at low cost. A transmission unit 33 of optical transceivers 21a and 21b connected to each other by an optical fiber cable 22 in an optical transmission system 20 includes a laser 37 for emitting a laser beam serving as an optical signal P1 to the optical fiber cable 22, and an optical intensity control unit 35 for performing control to change the optical level of the optical signal of the laser beam.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: September 20, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kana Masumoto, Toshiya Matsuda
  • Patent number: 11438073
    Abstract: An optical transceiver monitoring system includes an optical transceiver device that includes a non-volatile memory system, and a computing device that includes a computing device port that is coupled to the optical transceiver device. The computing device monitors the computing device port and, in response, detects one or more interactions between the optical transceiver device and the computing device. The computing device determines that the one or more interactions satisfy an event condition, and in response to the one or more interactions satisfying the event condition, provides first event information that corresponds to the one or more interactions to the optical transceiver device for storage in the non-volatile memory system.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: September 6, 2022
    Assignee: Dell Products L.P.
    Inventors: Sudharsan Dhamal Gopalarathnam, Vamshidhar Varre
  • Patent number: 11438062
    Abstract: Disclosed are systems for transmitting and receiving a radio frequency (RF) signal and an optical signal. One system may include a communication terminal comprising a primary concave reflector providing a first focal length to a focal point, and a secondary concave reflector providing a second focal length to the focal point. The communication terminal may further comprise an optical transceiver facing the secondary concave reflector, and one or more RF transceivers facing the primary concave reflector. The optical transceiver may be configured to transmit and receive the optical signal via the primary and secondary concave reflectors through the focal point, and the one or more RF transceivers may be configured to transmit and receive the RF signal via the primary concave reflector. The one or more RF transceivers may be positioned adjacent to the focal point and offset from a path of the optical signal.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: September 6, 2022
    Assignee: Honeywell Limited Honeywell Limitée
    Inventor: Graham Martin Arbery
  • Patent number: 11438064
    Abstract: A communication interface comprising a host with non-linear equalizers configured to perform non-linear equalization. Also part of the interface is a host to optic module channel electrically connecting the host to an optic module and the optic module. The optic module comprises a transmitter and a receiver. The transmitter includes a linear equalizer and an electrical to optical module configured to convert the equalized signal from the driver to an optical signal, and transmit the optical signal over a fiber optic cable, such that the transmitter does not perform non-linear processing. The receiver includes a photodetector, configured to convert the received optic signal to a received electrical signal, and a linear amplifier configured to perform linear amplification on the received electrical signal. A driver sends the amplified received signal over an optic module to host channel, such that the receive does not perform non-linear processing.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: September 6, 2022
    Assignee: MACOM Technology Solutions Holdings, Inc.
    Inventor: Ryan Latchman
  • Patent number: 11431408
    Abstract: In some examples, high speed bidirectional OTDR-based testing may include transmitting data from a first end of a device under test (DUT) towards an optical time-domain reflectometer (OTDR) that is operatively connected to a second opposite end of the DUT. Further data that is transmitted by the OTDR may be received from the second opposite end of the DUT towards the first end of the DUT. Based on an amplitude of the further data, a direction of receiving of the further data may be adjusted towards a first receiver or towards a second receiver.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: August 30, 2022
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Charlène Roux, Julien Barrier
  • Patent number: 11424827
    Abstract: An optical detector system provides output to an optical tracking system to facilitate optical communications by tracking a beam of incoming light using a fast-steering mirror (FSM). The optical detector system comprises an array of optical photodetectors, such array comprising one or more quad cells. The incoming light passes through one or more optical elements to generate a specified beam shape, such as a bar or cross, on the array. The resulting output from the array is highly responsive to changes in position of the reshaped beam on the array. As a result, noise equivalent angle (NEA) of the optical detector system representing pointing error is substantially reduced. A reduction in NEA facilitates more precise alignment, allowing incoming light to be aligned to a smaller area. For example, the incoming light may be aligned to a single mode optical fiber connected to a receiver system.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: August 23, 2022
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Jeff Clark Adams, Donald Mitchell Cornwell, Rui Zhang, Markus Stefan Duelli