Wavelength Division Or Frequency Division (e.g., Raman, Brillouin, Etc.) Patents (Class 398/79)
  • Patent number: 12380059
    Abstract: A Super System is disclosed and its inputs/outputs are coupled with a Mach-Zehnder interferometer (MZI), wherein the Mach-Zehnder interferometer (MZI) can be coupled with a first optical waveguide either in a two-dimensional (2-D) or in a three-dimensional (3-D) arrangement. The first optical waveguide can be then coupled with (i) a semiconductor optical amplifier (SOA) and/or (ii) a second optical waveguide (that can include an optical resonator) either in a two-dimensional (2-D) or in a three-dimensional (3-D) arrangement. The Super System can include multipliers of matrices and/or graphic processors.
    Type: Grant
    Filed: September 14, 2024
    Date of Patent: August 5, 2025
    Inventor: Mohammad A. Mazed
  • Patent number: 12375838
    Abstract: An optical communication device includes: an optical switch configured to output an optical signal input from one transmission line to another transmission line among a plurality of transmission lines; and a control unit configured to control the optical switch such that a wavelength in accordance with a subscriber device and a transmission destination on a path of a communication destination is allocated to the subscriber device by using a control signal inserted or written by the control unit or a monitoring unit, and the input optical signal is output to the another transmission line corresponding to the communication destination.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: July 29, 2025
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventor: Manabu Yoshino
  • Patent number: 12355487
    Abstract: A system (10) for monitoring a network is formed by a plurality of devices (12), each device (12) of the plurality of devices having at least one status sensor (13) measuring at least one physical parameter of the device (12). The system (10) further has a monitoring platform (14) communicating with the at least one status sensor (13) by means of a telecommunications network (16).
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: July 8, 2025
    Assignee: NEXANS
    Inventors: Jean-Jacques Sage, Mathieu Brigot
  • Patent number: 12348265
    Abstract: Systems and methods for optimization of spectrum sharing in optical line systems include, for at least one fiber having optical spectrum being shared by at least two users in an optical line system, assigning value to the optical spectrum; determining using a policy and the assigned value of the optical spectrum how to partition the optical spectrum between the at least two users; and causing implementation of the partition of the optical spectrum. The assigned value of the optical spectrum can be based on information carrying capacity in bandwidth per second. The assigned value of the optical spectrum accounts for performance versus frequency, such that, e.g., two or more of the at least two users have different amounts of the optical spectrum from one another.
    Type: Grant
    Filed: May 31, 2023
    Date of Patent: July 1, 2025
    Assignee: Ciena Corporation
    Inventors: Priyanth Mehta, Darwin Evans, Michael Hubbard, Robert W. Keys
  • Patent number: 12328142
    Abstract: The techniques described within this disclosure are directed to an in-line adaptor or coupling device of a PON that detects incoming optical signals (e.g., of different services) being delivered over the PON on different bands of wavelengths supported by an incoming optical fiber of the PON, converts (if necessary) any optical signals to suitable wavelength signals, and transmits the converted optical signals to a last mile termination unit via suitable output interfaces. At least a portion of the incoming optical signals are not converted by the in-line adaptor, and instead are passed-through the in-line adaptor to the last mile termination unit via an optical output interface. The in-line adaptor further includes one or more wireless interfaces via which information pertaining to the received optical signals and/or other information related to the in-line adaptor is transmitted to one or more recipient devices.
    Type: Grant
    Filed: September 18, 2024
    Date of Patent: June 10, 2025
    Assignee: FRONTIER COMMUNICATIONS HOLDINGS, LLC
    Inventor: John Valdez
  • Patent number: 12328537
    Abstract: An optical communication device includes an optical switch that outputs an optical signal input from one of a plurality of transmission lines to another transmission line among the plurality of transmission lines, a monitoring unit that relays an optical signal in a transmission line on a side where the optical signal is output from the optical switch, a blocking unit that blocks transmission of an optical signal output from the monitoring unit, a wavelength controller that allocates a wavelength and the like that are a wavelength, a time, a polarization, a mode, a code, a frequency, a core, a core wire, or a combination thereof to an optical signal of a subscriber device via the monitoring unit, and an optical switch controller that controls the optical switch such that the optical signal input from the transmission line to the optical switch is output to the another transmission line, and cancels the blocking by the blocking unit.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: June 10, 2025
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventor: Manabu Yoshino
  • Patent number: 12320701
    Abstract: A filter array includes optical filters arranged in two dimensions. The optical filters include a first filter and a second filter. The first filter includes a first multimode filter having, within a target wavelength range, first peak wavelengths at each of which the optical transmittance is at a local maximum, and a first band-limiting filter having, as a limiting band, a first sub-wavelength range that is a part of the target wavelength range. The second filter includes a second multimode filter having, within the target wavelength range, second peak wavelengths at each of which the optical transmittance is at a local maximum, at least one of the second peak wavelengths being different from the first peak wavelengths, and a second band-limiting filter restricting transmission of light in a second sub-wavelength range that is a part of the target wavelength range and that is different from the first sub-wavelength range.
    Type: Grant
    Filed: February 1, 2023
    Date of Patent: June 3, 2025
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Motoki Yako, Atsushi Ishikawa
  • Patent number: 12314595
    Abstract: A method, comprising: generating a plurality of combined utilization vectors, each of the plurality of combined utilization vectors corresponding to a different one of a plurality of port pairs; updating the plurality of combined utilization vectors based on an expected usage of the storage entity to produce a plurality of updated utilization vectors; selecting one of the plurality of port pairs based on the plurality of updated utilization vectors; and assigning the selected port pair to the replication of data that is stored in the storage entity.
    Type: Grant
    Filed: January 24, 2024
    Date of Patent: May 27, 2025
    Assignee: Dell Products L.P.
    Inventors: Jason McCarthy, Girish Warrier, Rongnong Zhou
  • Patent number: 12298564
    Abstract: An electro-optic receiver includes a polarization splitter and rotator (PSR) that directs incoming light having a first polarization through a first end of an optical waveguide, and that rotates incoming light from a second polarization to the first polarization to create polarization-rotated light that is directed to a second end of the optical waveguide. The incoming light of the first polarization and the polarization-rotated light travel through the optical waveguide in opposite directions. A plurality of ring resonators is optically coupled the optical waveguide.
    Type: Grant
    Filed: July 23, 2023
    Date of Patent: May 13, 2025
    Assignee: Ayar Labs, Inc.
    Inventors: Pavan Bhargava, Derek Van Orden, Mark Wade, John Fini, Chen Sun, Milos Popovic, Anatol Khilo
  • Patent number: 12294447
    Abstract: A satellite reception assembly may include a housing configured to support receipt and handling of a plurality of satellite signals. The housing may include circuitry incorporating integrated stacking architecture for supporting and/or providing channel and/or band stacking whereby particular channels or bands, from multiple satellite signals that are received via the satellite reception assembly, may be combined onto a single output signal that may be communicated from the satellite reception assembly to a gateway device for concurrent distribution thereby to a plurality of client devices serviced by the gateway device.
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: May 6, 2025
    Assignee: Entropic Communications, LLC
    Inventors: Glenn Chang, Brian Sprague, Madhukar Reddy
  • Patent number: 12294412
    Abstract: Disclosed are a signal demodulation method and apparatus, a computer storage medium and a device. The method comprises: acquiring a signal to be demodulated; performing direct current blocking and bias processing on the signal to obtain a processed signal; comparing the processed signal with a preset decision signal, and obtaining a demodulation signal according to a comparison result. Thus, direct current blocking processing on a modulation signal can avoid dynamic changes of DC components caused by average power changes of carrier signals, avoiding wrongly demodulating the modulation signal. Bias processing after the direct current blocking on the modulation signal can further realize an AC signal decision without introducing a negative pressure source. A real-time decision on the processed signal via the preset decision signal can dynamically adapt the average power of carrier signals, thereby ensuring to correctly demodulate the modulation signal and improving the accuracy of demodulation results.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: May 6, 2025
    Inventors: Zhi Yang, Cuihong Zhang, Weidong Ma
  • Patent number: 12288962
    Abstract: In an EADFB laser with an integrated SOA, a new configuration in which deterioration of optical waveform quality is solved or mitigated while taking advantage of characteristics that the same layer structure can be used and the manufacturing process can be simplified is shown. In an optical transmitter of the present disclosure, a carrier density is optimized depending on a light intensity inside the SOA and an amount of carrier consumption. The SOA is electrically separated into a plurality of regions, and a current is injected into each region independently. The divided SOA region is configured so that a length of the SOA region becomes shorter as a region is farther from an incidence end of the SOA. Further, for the divided SOA, an amount of carrier consumption increases as the SOA region is farther from the incidence end, so that a current injection amount is increased.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: April 29, 2025
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takahiko Shindo, Meishin Chin, Shigeru Kanazawa
  • Patent number: 12289208
    Abstract: The present invention provides an optimization method and system for minimizing network energy consumption based on traffic grooming. The method includes: generating a set of service requests in an elastic optical network, and calculating a reachable node set of shortest paths from source to destination nodes for each service request; establishing a virtual reachable path in the reachable node set of shortest paths; and establishing a target function of an integer linear programming model of the minimizing network energy consumption, and sequentially determining whether a bandwidth capacity constraint of a single spectrum slot, a path uniqueness constraint, a spectrum allocation constraint, and an optical regenerator quantity constraint are satisfied, where if all constraints are satisfied, the service request is successfully established, or if any of the constraints is not satisfied, the service request fails to be established. The present invention helps to improve the energy efficiency of service requests.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: April 29, 2025
    Assignee: SOOCHOW UNIVERSITY
    Inventors: Bowen Chen, Yunfei Jiang, Qi Chen, Weike Ma, Ling Liu, Gangxiang Shen, Mingyi Gao, Lian Xiang, Hong Chen
  • Patent number: 12284083
    Abstract: A method for automatic generation of a specification for an IT topology of a control system, the method comprising: creating a system structure from a machine-readable data defining production process requirements and generating specification data of the IT topology based on the extracted system structure; optimizing the generated specification data of the IT topology by utilization of pre-defined rules and generating abstract aggregated IT topology data based on the optimized specification data; and instantiating and mapping the abstract aggregated IT topology data to specific technology instance data.
    Type: Grant
    Filed: September 26, 2023
    Date of Patent: April 22, 2025
    Assignee: ABB Schweiz AG
    Inventors: Andreas Burger, Heiko Koziolek, Pablo Rodriguez, Rhaban Hark
  • Patent number: 12284032
    Abstract: A first optical network device groups a plurality of FlexO instance frames into one group, where each of the plurality of FlexO instance frames carries one OTU signal; then, performs multiplexing on the plurality of FlexO instance frames grouped into one group, to generate one first FlexO frame; next, performing scrambling and FEC processing on the first FlexO frame to generate one second FlexO frame and send it to a second optical network device. If a rate of the FlexO instance frame is 100 Gbps and two FlexO instance frames are grouped into one group, the 200 G optical module can be used in the transmission method.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: April 22, 2025
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Wei Su, Maarten Petrus Joseph Vissers, Qiuyou Wu
  • Patent number: 12278665
    Abstract: Systems and methods are described for transmitting information optically. For instance, a system may include an optical source configured to generate a beam of light. The system may include at least one modulator configured to encode data on the beam of light to produce an encoded beam of light/encoded plurality of pulses. The system may include a spectrally-equalizing amplifier configured to receive the encoded beam of light/encoded plurality of pulses from the at least one modulator and both amplify and filter the encoded beam of light/encoded plurality of pulses to produce a filtered beam of light/filtered plurality of pulses, thereby spectrally equalizing a gain applied to the encoded beam of light. In some cases, the system may slice the beam of slight, to ensure a detector has impulsive detection. In some cases, the system may include a temperature controller to shift a distribution curve of wavelengths of the optical source.
    Type: Grant
    Filed: November 12, 2024
    Date of Patent: April 15, 2025
    Assignee: Attochron, LLC
    Inventors: Thomas M. Chaffee, Wayne H. Knox
  • Patent number: 12255596
    Abstract: A filter circuit for use with a system configured to be coupled with an electrical load, the filter circuit comprising a first filter, wherein the first filter is configured to receive a first voltage and provide an output voltage, the output voltage being the first voltage after filtering by the first filter, and the filter circuit is configured to adjust the bandwidth of the first filter in response to a load transient.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: March 18, 2025
    Assignee: Renesas Electronics Corporation
    Inventor: Nishant Singh Thakur
  • Patent number: 12237954
    Abstract: This application discloses example data encoding methods, data decoding methods, and communication apparatuses. One example data encoding method includes generating M encoding units and distributing the M encoding units to N transmission channels. The M encoding units are obtained by encoding L frames. The M encoding units include at least one first-type unit. A first-type unit of the at least one first-type unit includes a first identifier. The first identifier indicates a start location that is in the first-type unit and that is of a frame header of a first frame in the L frames. M, N, and L are integers greater than or equal to 1.
    Type: Grant
    Filed: March 22, 2023
    Date of Patent: February 25, 2025
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yuchun Lu, Lin Ma, Liang Li
  • Patent number: 12224803
    Abstract: A control apparatus for generating a control signal for an electro-optic modulator is described. The control apparatus includes an RF signal source being configured to generate a radio frequency (RF) signal. The control apparatus further includes an amplitude adjustment circuit being configured to adjust an amplitude of the RF signal, thereby obtaining an adjusted RF signal. The control apparatus further includes a DC signal source being configured to generate a direct current (DC) signal. The control apparatus further includes a superposition circuit being configured to superimpose the adjusted RF signal and the DC signal, thereby obtaining the control signal for the electro-optic modulator. The control apparatus further includes a control circuit, wherein the control circuit is configured to receive at least one frequency parameter associated with the electro-optic modulator. The at least one frequency parameter includes a frequency multiplication factor and/or a target modulation frequency.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: February 11, 2025
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventor: Julius Seeger
  • Patent number: 12212903
    Abstract: Aspects of the subject disclosure may include, for example, identifying network elements of a wavelength division multiplexing (WDM) domain of an optical waveguide communication system that includes a group of optical-add-drop multiplexor (OADM) devices. Operations are observed for the WDM domain configured to deliver communication services configured for simultaneously transporting independent signals across a network of single optical waveguides. A demand for optical waveguide communication services is determined and the WDM network is configured according to the optical fiber communication link requirement and according to the observations. The configured WDM network includes at least one OADM device of the group of OADM devices configured to provide a WDM cross-frequency network path of the configured WDM network. Other embodiments are disclosed.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: January 28, 2025
    Assignees: AT&T Intellectual Property I, L.P., AT&T Communications Services India Private Limited
    Inventors: Mritunjay Pandey, Subhash Kapoor, Lynn Rivera, Saurav Paira
  • Patent number: 12199741
    Abstract: An optical transmission device configured to: receive an input of signal interruption information from a second optical transmission device that detects a signal interruption of signal light on a transmission path, and to receive an input of ASE light after the signal interruption, has a wavelength selective switch configured to drop and/or add signal light; a memory; and a processor coupled to the memory. The processor is configured to: switch, based on the input of the signal interruption information from the second optical transmission device, control of output of the wavelength selective switch from a constant level control of the output, to a constant level control of attenuation for holding an amount of the attenuation of the signal light constant; and return the constant level control of the attenuation to the constant level control of the output, after the input of the ASE light.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: January 14, 2025
    Assignee: Fujitsu Limited
    Inventors: Akihiro Mukai, Yoshito Kachita, David Dal Farra
  • Patent number: 12184402
    Abstract: Provided is an optical communication system comprising a polarization-diversity optical power supply capable of supplying light over a non-polarization-maintaining optical fiber to a polarization-sensitive modulation device. In an example embodiment, the polarization-diversity optical power supply operates to accommodate random polarization fluctuations within the non-polarization-maintaining optical fiber and enables an equal-power split at a passive polarization splitter preceding the polarization-sensitive modulation device.
    Type: Grant
    Filed: April 3, 2023
    Date of Patent: December 31, 2024
    Assignee: Nubis Communications, Inc.
    Inventor: Peter Johannes Winzer
  • Patent number: 12184334
    Abstract: An optical transceiver may include an optical transmitter and an optical receiver. The optical transmitter and receiver may each include a grid including one or more lanes spaced apart. Each lane may correspond to a predetermined optical signal, or wavelength. The optical transmitter may include one or more sets of lasers to output one or more optical signals corresponding to the grid. Each set of laser may output a set of optical signals. Each set of lasers and, therefore, each set of optical signals may have a different passband. For example, the multiplexing and/or demultiplexing architecture may have a wide passband for the first set of optical signals and a narrow passband for the second set of optical signals. The narrow passband may be determined based on the space between two wider passbands.
    Type: Grant
    Filed: April 24, 2023
    Date of Patent: December 31, 2024
    Assignee: Google LLC
    Inventors: Liming Wang, Xiang Zhou
  • Patent number: 12184337
    Abstract: An optical transmission system is an optical transmission system for transmitting a signal from an optical transmitter to an optical receiver via at least a transmission line among one or more optical nodes and the transmission line, wherein the optical transmitter includes a digital filter that compensates for, between ripple components that are micro-fluctuating components in a frequency region representing a transmission characteristic of the signal in the optical transmitter and the optical receiver and non-ripple components of the transmission characteristic, at least the ripple components of the transmission characteristic, and at least one of the optical node and the optical transmitter includes an optical filter that compensates for the non-ripple components of the transmission characteristic.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: December 31, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shuto Yamamoto, Masanori Nakamura, Hiroki Taniguchi, Yoshiaki Kisaka
  • Patent number: 12177725
    Abstract: A radio access network (“RAN”) includes a transceiver for receiving a request from user equipment (“UE”) to join the RAN. The RAN also includes a processor that is configured for: responding to the UE request by sending a message directly from the RAN to the UE to offer a set of first terms for the UE to use a cellular network of the RAN; receiving a response from the UE agreeing to the set of first terms; and in response to the UE agreeing to the set of first terms, connecting the UE to use a cellular network of the RAN.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: December 24, 2024
    Assignee: DISH WIRELESS L.L.C.
    Inventor: Jennings Orcutt
  • Patent number: 12176951
    Abstract: A system architecture is described that allows mapping of different RF-wave directions (e.g., Angles of Arrival or “AoA-s”) to different optical-carrier wavelengths. Such mapping enables the transmission of all information captured by a phased array, including spatial information of the incoming RF waves, using a single optical fiber.
    Type: Grant
    Filed: August 23, 2022
    Date of Patent: December 24, 2024
    Assignee: Phase Sensitive Innovations, Inc.
    Inventor: Janusz Murakowski
  • Patent number: 12170862
    Abstract: A 10 G rate OLT terminal transceiver integrated chip based on XGPON and DFB laser includes: a burst mode receiver RX, a continuous mode transmitter TX and a digital control unit DIGIITAL. The burst mode receiver RX amplifies an optical signal from each ONU client into an electrical signal through a burst TIA, processes double-detection for amplitude and frequency of the electrical signal, outputs the signal whose amplitude and waveform pulse width meet the threshold requirements to the host, and uses a fast recovery module to control the timing to meet the XGPON protocol. The continuous mode transmitter TX receives the electrical signal attenuated by the PCB, and selects the bypass BYPASS path or the clock data recovery CDR path according to the degree of attenuation. The digital control unit DIGIITAL is used to provide control signals for the burst mode receiver RX and the continuous mode transmitter TX.
    Type: Grant
    Filed: May 24, 2023
    Date of Patent: December 17, 2024
    Inventors: Jinghu Li, An Lin, Zhang Fan
  • Patent number: 12160306
    Abstract: Systems and methods for automatic link calibration include subsequent to installation of equipment for the amplified optical section, obtaining power measurements of optical spectrum in the optical section; obtaining properties of fiber in the amplified optical link; analyzing the power measurements and the properties of the fiber to determine settings for the equipment for calibration thereof; and automatically configuring the settings for the equipment. The settings are based on the power measurements and the properties of the fiber to achieve a target launch power per span in the amplified optical section, and wherein the target launch power is based on Optical Signal-to-Noise Ratio (OSNR) and non-linearity in the amplified optical section.
    Type: Grant
    Filed: August 29, 2023
    Date of Patent: December 3, 2024
    Assignee: Ciena Corporation
    Inventors: Choudhury A. Al Sayeed, David C. Bownass, David Atkinson, Scott Kohlert
  • Patent number: 12155457
    Abstract: An apparatus includes an optical wavelength multiplexer to multiplex a sequence of optical wavelength channels. The optical wavelength multiplexer comprises a first passive optical filter to combine odd channels of the sequence of optical wavelength channels into a first multiplexed optical signal, a second passive optical filter to combine even channels of the sequence of optical wavelength channels into a second multiplexed optical signal, and an optical combiner to combine the odd channels and the even channels into a composite optical signal. The optical wavelength multiplexer comprises variable optical attenuators, and an electronic controller to operate the variable optical attenuators to substantially block one or more adjacent optical wavelength channels adjacent to a particular optical wavelength channel provisioned to the optical wavelength multiplexer in response to a width for the particular optical wavelength channel being larger than a width of the adjacent optical wavelength channel(s).
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: November 26, 2024
    Assignee: Nokia Solutions and Networks Oy
    Inventor: Randy Eisenach
  • Patent number: 12143156
    Abstract: A system and method for wavelength detection includes one or more detection stages configured for receiving at least a portion of an optical carrier. Each stage includes a splitter for splitting the signal into two arms. A 90-degree optical hybrid and in-phase (I-channel)/quadrature (Q-channel) differential detectors generate I-channel and Q-channel differential signals based on the hybrid outputs. A gas cell or like multi-point wavelength reference path also receives the input signal and provides a set of reference absorption wavelengths converted into the electrical domain by a reference photodetector. A logic device receives sets of detection signals (including I-channel and Q-channel differential signals and the set of reference wavelengths, all corresponding to a common measurement time) and determines a wavelength of the optical carrier based on an arctangent of a ratio of the Q-channel and I-channel differential signals, mapped to the set of reference absorption wavelengths.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: November 12, 2024
    Assignee: Rockwell Collins, Inc.
    Inventors: Wenlu Chen, Oliver S. King, Mark A. Laliberte, Joseph W. Heming
  • Patent number: 12119870
    Abstract: An optical channel monitor is formed to include the capability to sense real-time changes in optical power across signal bands (optical power changes including, for example, a complete drop out of the signal band) and quickly measure the resulting spectrum, thus enabling the host to initiate advanced power balancing solutions that mitigate the extent of the power change until a permanent fix is provided. A set of signal band sensors is included with a conventional OCM, where each sensor includes a photodetector that is able to detect changes in operation along its associated incoming signal band. Control electronics are used to monitor the states of the photodetectors, with the ability to invoke an OCM scan of the complete wavelength range when a power change condition is flagged.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: October 15, 2024
    Assignee: II-VI Delaware, Inc.
    Inventors: Michael J. L. Cahill, Glenn D. Bartolini, Jiang-Huai Zhou, Yajun Wang
  • Patent number: 12120474
    Abstract: Embodiments of the present disclosure provide an activation method, an activation device, a control device, a network device and an optical network system. A new-system ONU is activated on a first OLT in an existing system, and then activation information of the new-system ONU is sent to a second OLT in a new system by the first OLT or by an activation agent ONU which has been activated on the second OLT, thereby enabling activation of the new-system ONU on the second OLT.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: October 15, 2024
    Assignee: ZTE CORPORATION
    Inventors: Weiliang Zhang, Yong Guo, Jun Shan Wey, Liquan Yuan
  • Patent number: 12117574
    Abstract: Systems and methods are provided for generating a model for detection of seismic events. In this regard, one or more processors may receive from one or more stations located along an underwater optical route, one or more time series of polarization states of a detected light signal during a time period. The one or more processors may transform the one or more time series of polarization states into one or more spectrums in a frequency domain. Seismic activity data for the time period may be received by the one or more processors, where the seismic activity data include one or more seismic events detected in a region at least partially overlapping the underwater optical route. The one or more processors then generate a model for detecting seismic events based on the one or more spectrums and the seismic activity data.
    Type: Grant
    Filed: June 12, 2023
    Date of Patent: October 15, 2024
    Assignee: Google LLC
    Inventors: Valey Kamalov, Mattia Cantono, Vijayanand Vusirikala, Massimiliano Salsi, Matthew Eldred Newland
  • Patent number: 12085761
    Abstract: Disclosed are apparatus and methods for optical coupling.
    Type: Grant
    Filed: May 23, 2023
    Date of Patent: September 10, 2024
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Tsung Shih, Chewn-Pu Jou, Stefan Rusu, Felix Ying-Kit Tsui, Lan-Chou Cho
  • Patent number: 12081407
    Abstract: Systems and methods are provided for planning a future network topology with associated configuration settings of existing nodes in a network and enacting changes to the configuration settings after the network has been physically changed to the planned future topology. The method can include, in response to receiving a topology plan to change a network from an initial network topology to a future network topology, determine a configuration plan to change configuration settings of one or more existing Network Elements (NEs) deployed in the network in order to transition the network from the initial network topology to the future network topology, and, in response to discovering that the network has been physically changed to match the future network topology, automatically enact the configuration plan to change the configuration settings of the one or more existing NEs.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: September 3, 2024
    Assignee: Ciena Corporation
    Inventors: Dale Frederick Zacharias, Jitendra Kumar Yadav
  • Patent number: 12074646
    Abstract: An optical transceiver is provided for a network communication system utilizing a coherent passive optical network (CPON). The optical transceiver includes a downstream transmitter in operable communication with an optical communication medium. The downstream transmitter is configured to schedule upstream resource allocation blocks to first and second downstream transceivers disposed along the optical communication medium at different respective locations remote from the optical transceiver. The optical transceiver further includes an upstream burst receiver system configured to simultaneously detect (i) a first upstream burst transmission sent from the first downstream transceiver along a first frequency subchannel of an optical spectrum of the CPON, and (ii) a second upstream burst transmission sent from the second downstream transceiver along a second frequency subchannel of the optical spectrum different from the first frequency subchannel.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: August 27, 2024
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Luis Alberto Campos, Zhensheng Jia
  • Patent number: 12058480
    Abstract: Provided are a link establishment method and apparatus and a computer-readable storage medium. The link establishment method includes: exchanging optical link auto-negotiation information with a terminal device through an optical link auto-negotiation channel; and in a case where exchanging the optical link auto-negotiation information is finished, establishing at least one of a traffic data channel or an optical link auto-negotiation channel; where the optical link auto-negotiation channel is independent of the traffic data channel or the optical link auto-negotiation channel; and the optical link auto-negotiation information includes at least one of information about an operating wavelength channel of the terminal device, an enabled or disabled state of forward error correction with the terminal device, a forward error correction type with the terminal device, or an operating mode of the auxiliary management channel.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: August 6, 2024
    Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.
    Inventors: Wei Yang, Bo Yang, Huannan Ma, Xiangrong Chen, Yufeng Li, Liquan Yuan
  • Patent number: 12051884
    Abstract: A wavelength tunable laser formed on a substrate made of single-crystal silicon is provided. The wavelength tunable laser includes a light emitting portion made of a III-V compound semiconductor, and external resonators provided with an optical filter. Cores included in the external resonators are made of one of SiN, SiON, and SiOn (n is smaller than 2).
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: July 30, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takuma Aihara, Shinji Matsuo, Tai Tsuchizawa, Takaaki Kakitsuka, Tatsurou Hiraki
  • Patent number: 12044887
    Abstract: An optical coupling system for coupling a light source to a photonic integrated circuit (PIC) comprises a multimode coupler configured to receive an input optical signal of a first mode. The multimode coupler triggers one or more higher-order modes from the input optical signal of the first mode. The optical coupling system also includes a mode de-multiplexer and an optical combiner. The mode de-multiplexer transfers the input optical signal of the first mode and one or more optical signals of the triggered one or more higher-order modes to respective output optical signals of the first mode. The optical combiner combines the respective output optical signals to produce a single output signal of the first mode.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: July 23, 2024
    Assignee: MACOM Technology Solutions Holdings, Inc.
    Inventors: Yunchu Li, Richard R. Grzybowski
  • Patent number: 12047162
    Abstract: A method includes, for each optical fiber path in an optical network, allocating an optical wavelength channel in an optical spectrum such that the allocated optical wavelength channel is assigned to support optical communications over the optical fiber path. The method also includes updating an allocation table in response to performing the allocating for one or more of the optical fiber paths; the allocating including determining the optical wavelength channel to be allocated based on a state of the allocation table. The allocation table indicates optical wavelength channels allocated over optical fiber spans of the optical network. The method also includes defining a set of optical sub-bands to cover a part of the optical spectrum in response to a state of the allocation table satisfying a fullness property. The optical sub-bands are such that each of the allocated wavelength channels is in one of the optical sub-bands.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: July 23, 2024
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Arnaud Bisson, Milosav Andelic, Giovanni Bellotti, Eliana Vercelli
  • Patent number: 12034233
    Abstract: A method includes determining an operating frequency of an antenna at a component of the antenna. The method includes determining, at the component of the antenna, a filter node of a plurality of filter nodes to activate to tune the antenna to the operating frequency. The method includes transmitting power to the filter node, wherein the power is transmitted via a first optical fiber. The method also includes sending a signal from the component to a light source. The activation of the light source sends an optical signal to the filter node. The filter node adjusts a characteristic of a radiating element coupled to the filter node using the power responsive to the optical signal. Adjustment of the characteristic facilitates tuning the antenna to the operating frequency.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: July 9, 2024
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Robert R. Miller, II
  • Patent number: 12021615
    Abstract: Embodiments of this application disclose a data processing method, an optical transmission device, and a digital processing chip, for improving service transmission performance. In the data processing method, an optical transmission device compresses a to-be-transmitted data stream to obtain a compressed data stream. The optical transmission device then obtains a size of a first payload area corresponding to the compressed data stream and maps the compressed data stream to a data frame, where the data frame includes an overhead area and a payload area. The payload area includes the first payload area and a second payload area. The second payload area carries the compressed data stream, and the first payload area carries a forward error correction (FEC) code. The data frame is then transmitted by the optical transmission device.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: June 25, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Junling Xiang, Shuqian Zheng
  • Patent number: 12015481
    Abstract: A method, system, and ASIC chip for comparing a bit error rate (BER) to a forward error correction (FEC) threshold to determine a Q margin for a codeblock; wherein the BER corresponds to the number of errors in a given amount of data; where a codeblock of a FEC corresponds to the given amount of data; wherein the FEC threshold corresponds to the maximum amount of errors per codeblock that the FEC is able to remove per given amount of data; wherein the Q margin corresponds to a difference between the BER and the FEC threshold.
    Type: Grant
    Filed: July 18, 2022
    Date of Patent: June 18, 2024
    Assignee: Acacia Technology, Inc.
    Inventors: Yue Pan, Jonas Geyer
  • Patent number: 12015447
    Abstract: A microcontroller includes a setting unit, an encoder, a modulation circuit, and a digital-to-analog converter. The setting unit outputs a control signal. The encoder outputs a digital signal that is encoded. The modulation circuit loads at least one carrier signal on the digital signal at the logic high level and/or the logic low level according to the control signal to generate a modulated digital signal. The digital-to-analog converter converts the modulated digital signal into an analog signal, and outputs the analog signal for transmission.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: June 18, 2024
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventor: Yun-Kai Lai
  • Patent number: 12015541
    Abstract: The invention provides a method for load-balanced traffic grooming in an IP over Quasi-CWDM network, including the steps of: inputting a network topology, a set of service traffics between nodes in node pairs and a null route, and when selecting one of the node pairs from the set of service traffics and establishing a traffic request between the nodes in the node pair, deleting the virtual link for which the corresponding light path has no sufficient remnant capacity in an IP layer of the network; finding the virtual link route having the lowest hop count in the IP layer, and determining whether each virtual link on the route can satisfy the service request by means of traffic grooming; and if yes, adopting the traffic grooming strategy to satisfy the service request; and if not, adopting the wave plane based strategy to establish a light path to satisfy the service request.
    Type: Grant
    Filed: May 10, 2023
    Date of Patent: June 18, 2024
    Assignee: SOOCHOW UNIVERSITY
    Inventors: Yongcheng Li, Jiaqi Zhou, Gangxiang Shen
  • Patent number: 12015886
    Abstract: Various embodiments of the disclosed PON system enable approximate leveling of the optical-modulation amplitudes in a sequence of optical bursts received by a system's OLT from a plurality of ONUs. Some embodiments additionally enable approximate leveling of the average optical power, received at the OLT from different ONUs, in such a sequence. Some embodiments may rely on control messaging between the OLT and ONUs to perform one or both types of leveling. The disclosed leveling may advantageously provide an effective tool for optimizing upstream transmission for high-speed TDM-PONs.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: June 18, 2024
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Doutje Van Veen, Vincent Houtsma, Amitkumar Mahadevan, Edward Harstead
  • Patent number: 12009869
    Abstract: A cryogenic optoelectronic data link, comprising a sending module operating at a cryogenic temperature less than 100 K. An ultrasensitive electro-optic modulator, sensitive to input voltages of less than 10 mV, may include at least one optically active layer of graphene, which may be part of a microscale resonator, which in turn may be integrated with an optical waveguide or an optical fiber. The optoelectronic data link enables optical output of weak electrical signals from superconducting or other cryogenic electronic devices in either digital or analog form. The modulator may be integrated on the same chip as the cryogenic electrical devices. A plurality of cryogenic electrical devices may generate a plurality of electrical signals, each coupled to its own modulator. The plurality of modulators may be resonant at different frequencies, and coupled to a common optical output line to transmit a combined wavelength-division-multiplexed (WDM) optical signal.
    Type: Grant
    Filed: April 3, 2023
    Date of Patent: June 11, 2024
    Assignees: SeeQC Inc., Center for Technology Licensing at Cornell University, The Trustees of Columbia University in the City of New York
    Inventors: Igor V. Vernik, Oleg A. Mukhanov, Alan M. Kadin, Christopher T. Phare, Michal Lipson, Keren Bergman
  • Patent number: 12007612
    Abstract: A silicon photonics optical transceiver device includes a silicon photonics optical module and a heat conducting housing that accommodates the silicon photonic optical module therein. The heat conducting housing has an inner surface formed with a first heat dissipation portion that wraps around and is in contact with transmitter optical sub-assemblies of the silicon photonics optical module to realize thermal conduction, and a second heat dissipation portion that is in contact with a digital signal processor of the silicon photonics optical module to realize thermal conduction.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: June 11, 2024
    Assignee: WAVESPLITTER TECHNOLOGIES, INC.
    Inventors: Ming-Ju Chen, Shih-Jhih Yang, Hua-Hsin Su, Wan-Pao Peng, Wen-Hsien Lee, Peng-Kai Hsu, Chung-Ho Wang
  • Patent number: 11996889
    Abstract: Devices, systems and methods for encoding information using optical components are described. An example photonic filtered sampler includes a spectral shaper configured to receive an optical pulse train, a dispersive element positioned to receive an output of the spectral shaper and to expand spectral contents thereof in time, and a modulator configured to receive an output of the dispersive element and a radio frequency (RF) signal, and to produce a modulated output optical signal in accordance with the RF signal. In this configuration, one or more characteristics of the modulated output optical signal is determined based on a spectral shape provided by the spectral shaper and dispersive properties of the dispersive element.
    Type: Grant
    Filed: January 24, 2023
    Date of Patent: May 28, 2024
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Brandon Walter Buckley, David Simon Perlmutter, Peter Thomas Setsuda DeVore, Apurva Shantharaj Gowda, Jason Thomas Chou
  • Patent number: 11982833
    Abstract: In some embodiments, an optical fiber transmission link, includes a length of dispersion compensating fiber (DCF), the dispersion compensating fiber coupled to a length of single-mode fiber (SMF) having a zero dispersion wavelength of 1300 nm to 1324 nm; wherein the optical fiber transmission link comprising the dispersion compensating fiber coupled to the single-mode fiber and operating at wavelengths between 1265 nm and 1375 nm increases maximum link lengths of the optical fiber transmission link by more than 60% as compared to the link length of the optical fiber transmission link with the single-mode fiber only; and wherein the maximum link length is calculated from the maximum allowed positive and negative accumulated dispersion at wavelengths between 1265 nm and 1375 nm.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: May 14, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Pushkar Tandon, Sergey Yurevich Ten