Patents Examined by Pranesh K Barua
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Patent number: 11848705Abstract: An optical transceiver includes a housing, a heat source accommodated in the housing, and a heat spreader. The heat spreader includes a heat transfer portion accommodated in the housing and a heat dissipation portion exposed to outside. The heat spreader is in thermal contact with the heat source, and the heat dissipation portion of the heat spreader is in proximity of an optical port of the housing.Type: GrantFiled: June 28, 2021Date of Patent: December 19, 2023Assignee: Prime World International Holdings Ltd.Inventors: Ling-An Kung, Hsuan-Chen Shiu, Guang-Kai Wu
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Patent number: 11843414Abstract: An optical interface includes circuitry configured to operate the optical interface at a first rate, subsequent to a requirement to suberate the optical interface to a second rate, determine which services are affected, signal a partial failure for the one or more affected services, and operate the optical interface at a second rate that is less than the first rate. The optical interface can be a Flexible Optical (FlexO) or ZR interface.Type: GrantFiled: March 10, 2021Date of Patent: December 12, 2023Assignee: Ciena CorporationInventor: Sebastien Gareau
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Patent number: 11838101Abstract: A modular optical add/drop system supporting a Colorless, Directionless, and Contentionless (CDC) architecture includes a first Contentionless Wavelength Selective Switch (CWSS)-based optical add/drop device; and one or more channel pre-combiners each having a common port with a transmit port and a receiver port, at least two local add/drop ports, components configured to combine channels between the at least two local add/drop ports and the common port, and a splitter and a combiner connected to the common port, wherein a first output of the splitter and the combiner is connected to the first CWSS-based optical add/drop device. The modular optical add/drop system can further include a second CWSS-based optical add/drop device, wherein a second output of the splitter and the combiner is connected to the second CWSS-based optical add/drop device.Type: GrantFiled: September 11, 2019Date of Patent: December 5, 2023Assignee: Ciena CorporationInventors: Paul Chedore, Jean-Luc Archambault
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Patent number: 11824584Abstract: A node device capable of optimal transfer in accordance with the traffic situation of a network irrespective of the optical signaling system is provided. The node device includes a first wavelength selective switch connected to an input-side optical fiber; a fast selective switch connected to the first wavelength selective switch for cut-through or selective switching to an OCS controller or an OFS/OPS controller; an optical coupler connected to a cut-through output of the fast selective switch, an output of the OCS controller, and an output of the OFS/OPS controller; a second wavelength selective switch connected to an output of the optical coupler; and a node controller that performs wavelength assignment control for the first and second wavelength selective switches, path/label switch control for the fast selective switch, and flow/packet switch control for the OFS/OPS controller.Type: GrantFiled: October 10, 2019Date of Patent: November 21, 2023Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yusuke Muranaka, Toshikazu Hashimoto
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Patent number: 11817903Abstract: Disclosed are coherent photonic circuit architectures that optically implement linear algebraic computations. In neuromorphic applications of such photonic circuit architectures, individual neural network layers can be implemented by coherent optical linear neurons in a crossbar configuration, integrated with electronic circuitry at the interfaces between neural network layers to determine the neuron inputs to one layer based on the neuron outputs of the preceding layer. Wavelength division multiplexing can be used to efficiently implement certain specific network models, optionally in conjunction with electro-optic switches to render a generic hardware configuration programmable.Type: GrantFiled: August 6, 2021Date of Patent: November 14, 2023Assignee: Celestial AI Inc.Inventors: Nikolaos Pleros, David Lazovsky, George Giamougiannis, Apostolos Tsakyridis, Angelina Totovic
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Patent number: 11817901Abstract: An example apparatus includes an optical transmitter, an optical splitter, lenses, and mirrors. The optical splitter has an input and several outputs. The input of the optical splitter is optically coupled to the transmitter, such that each of the outputs of the optical splitter is operable to supply a corresponding one of a plurality of modulated optical signals, each of which includes a plurality of optical subcarriers. Each of the lenses is optically coupled to a respective one of the outputs of the optical splitter. Each of the lenses is operable to receive a corresponding one of the modulated optical signals. Each of the mirrors is optically coupled to a corresponding one of the lenses, such that each of the mirrors is operable to direct a respective one of the modulated optical signals for transmission through free space.Type: GrantFiled: December 24, 2020Date of Patent: November 14, 2023Assignee: Infinera CorporationInventors: Steven Joseph Hand, Tulasi Veguru, Prasad Paranjape, Han Henry Sun
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Patent number: 11817900Abstract: A mobile system (1,11) comprises a camera (3) and at least one processor (5). The at least one processor is configured to capture an image with the camera, e.g. of a light beacon (15), to determine whether a certain object is recognized in the captured image, e.g. by querying a database (19), and to start detecting and/or decoding data being communicated via visible light in dependence on the certain object being recognized.Type: GrantFiled: November 22, 2017Date of Patent: November 14, 2023Assignee: SIGNIFY HOLDING B.V.Inventors: Dzmitry Viktorovich Aliakseyeu, Bartel Marinus Van De Sluis, Dirk Valentinus René Engelen
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Patent number: 11791898Abstract: Embodiments of the present disclosure relate to a method and an optical communication device implemented in an optical network and a computer-readable storage medium. In the method described herein, a distribution point unit (DPU) of the optical network receives a message comprising an identification of a target backhaul model from an Optical Line Terminal (OLT) in the optical network. The received message is parsed to obtain the identification of the target backhaul model. The target backhaul model indicated by the identification is used to communicate with the OLT. In this way, the DPU is compatible with many types of backhaul models and is capable of flexibly switching between the many types of backhaul models.Type: GrantFiled: February 24, 2020Date of Patent: October 17, 2023Assignee: NOKIA SOLUTIONS AND NETWORKS OYInventors: Yi Liu, Shugao Song, Xin Zhang
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Patent number: 11789206Abstract: A system and method for securing communication over an optical fiber are disclosed. The system includes a transmit spatial multiplexer configured to couple a plurality of optical signals into respective ones of a plurality of spatial paths of an optical fiber, each of the spatial paths being able to carry an optical signal; wherein at least one of the plurality of optical signals is an optically modulated version of a desired sequence of information that is intended to be transferred over the optical fiber; and wherein at least one of the plurality of optical signals is an optical chaff signal; whereby a tap along the fiber cannot determine the transmitted desired sequence of information.Type: GrantFiled: June 3, 2020Date of Patent: October 17, 2023Assignee: APRIORI NETWORK SYSTEMS, LLC.Inventor: Gary M. Weiner
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Patent number: 11789223Abstract: An optical transceiver module includes a package containing a light receiving element, a light emitting element, and an optical modulator configured to modulate light that is output from the light emitting element, a rigid circuit board including a control circuit provided on the rigid circuit board, the control circuit being configured to control at least one of the light receiving element, the light emitting element, or the optical modulator, and a flexible circuit board including a plurality of signal wires, wherein the rigid circuit board is connected to the package via the flexible circuit board, with a first surface of the rigid circuit board facing a first surface of the package, and the at least one of the light receiving element, the light emitting element, or the optical modulator is electrically connected to the control circuit via the plurality of signal wires.Type: GrantFiled: January 24, 2022Date of Patent: October 17, 2023Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventor: Yasutaka Mizuno
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Patent number: 11782088Abstract: Methods and apparatuses for testing a photonic integrated circuit and a corresponding sample holder and a photonic integrated circuit are provided. Here, a location for an illumination light beam can be selected by way of a scanning device, with the result that targeted coupling of the illumination light into the photonic integrated circuit is made possible.Type: GrantFiled: July 19, 2019Date of Patent: October 10, 2023Assignee: Carl Zeiss SMT GmbHInventors: Philipp Huebner, Stefan Richter
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Patent number: 11784713Abstract: A two-beam steering device comprising two single-beam steering devices and a motorized, rotating base stage, wherein each single-beam steering device is able to steer an electromagnetic wave beam in a full field of regard, wherein the two single-beam steering devices are fixed on top of the rotating base stage. The two-beam steering device can point the two individual beams into any direction pair in the entire field of regard with full flexibility.Type: GrantFiled: September 2, 2021Date of Patent: October 10, 2023Assignee: SCIDATEK INC.Inventors: Tomoyuki Izuhara, Louay Eldada
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Patent number: 11777635Abstract: A wavelength division multiplexing device includes a common port and a plurality of filters that define an optical path. The common port includes a collimator that transmits an optical beam including a plurality of optical signals. Each optical signal is associated with a different wavelength range, and each filter includes an interface having a radius of curvature. One filter is configured to receive the optical beam from the collimator, transmit an optical signal through its interface, and reflect the remaining portion of the optical beam toward another filter. The common collimator and filter are configured so that the reflected portion of the optical beam has a beam waist located in the optical path midway between the filters, and a wavefront radius of curvature at the other filter that matches the filter radius of curvature of that filter. A method of processing light in such a device is also disclosed.Type: GrantFiled: November 10, 2021Date of Patent: October 3, 2023Assignee: Corning Research & Development CorporationInventor: Eric Stephan ten Have
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Patent number: 11777631Abstract: An in-packaged multi-channel light engine is packaged for four or more sub-assemblies of optical-electrical sub-modules. Each is assembled with at least four laser chips, one or more driver chip, and one or more trans-impedance amplifier (TIA) chip separately flip-mounted on a silicon photonics interposer and is coupled to an optical interface block and an electrical interface block on a sub-module substrate. The in-packaged multi-channel light engine further includes a first frame fixture holding the four or more sub-assemblies and a second frame fixture configured to hold the first frame fixture with the four or more sub-assemblies. The in-packaged multi-channel light engine further includes an interposer plate inserted between the sub-module substrates and a module substrate and is compressed between a backplate member attached to a bottom side of the module substrate and a top plate member configured as a heatsink with a plurality of fin structures.Type: GrantFiled: December 28, 2021Date of Patent: October 3, 2023Assignee: MARVELL ASIA PTE LTD.Inventors: Radhakrishnan L. Nagarajan, Liang Ding, Mark Patterson, Roberto Coccioli
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Patent number: 11764893Abstract: A method in a first level aggregation node of a transport network is disclosed. The transport network comprises the first level aggregation node, a second level aggregation node and a Passive Optical Network. T the method comprises receiving, from the second level aggregation node, a plurality of wavelength division multiplexing (WDM) channels having wavelengths in a first spectrum section and generating at least one passive optical channel having a wavelength in a second spectrum section, different to the first spectrum section. The method further comprises combining at least some of the WDM channels received from the second level aggregation node with the at least one passive optical channel, and forwarding the combined WDM channels and passive optical channel to a termination node in the Passive Optical Network. Also disclosed are a method in a termination node of a transport network, a first level aggregation node, a termination node and a computer program.Type: GrantFiled: March 22, 2017Date of Patent: September 19, 2023Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Fabio Cavaliere, Paola Iovanna, Filippo Ponzini
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Patent number: 11757556Abstract: An optical communication network includes a downstream optical transceiver. The downstream optical transceiver includes at least one coherent optical transmitter configured to transmit a downstream coherent dual-band optical signal having a left-side band portion, a right-side band portion, and a central optical carrier disposed within a guard band between the left-side band portion and the right-side band portion. The network further includes an optical transport medium configured to carry the downstream coherent dual-band optical signal from the downstream optical transceiver. The network further includes at least one modem device operably coupled to the optical transport medium and configured to receive the downstream coherent dual-band optical signal from the optical transport medium. The at least one modem device includes a downstream coherent optical receiver, and a first slave laser injection locked to a frequency of the central optical carrier.Type: GrantFiled: May 26, 2022Date of Patent: September 12, 2023Assignee: Cable Television Laboratories, Inc.Inventors: Mu Xu, Zhensheng Jia, Haipeng Zhang, Luis Alberto Campos
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Patent number: 11750316Abstract: Disclosed herein is wavelength-division multiplexing (WDM) and demultiplexing with signal entry and exit in a common routing surface to increase channel density. In particular, disclosed is a WDM assembly including a plurality of common ports and a plurality of channel sets having one or more channel ports. The WDM assembly includes a first routing surface with a first WDM passband and a second routing surface offset from the first routing surface. The second routing surface is configured to reflect at least one signal passed through the first routing surface back through the first routing surface at a laterally different location. Optical signal paths of at least a portion of the common ports are parallel to and offset from one another. In certain embodiments, such a configuration may increase channel density and decrease a form factor (e.g., footprint).Type: GrantFiled: July 14, 2021Date of Patent: September 5, 2023Assignee: Alliance Fiber Optic Products, Inc.Inventor: Qijun Xiao
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Patent number: 11742948Abstract: An optical wireless communications receiver for a portable communications device, the receiver being configured to receive radiation signals on which communication data is encoded, wherein the receiver is comprised in or on or configured for mounting to at least part of a periphery or edge of the device. Advantageously, the optical wireless communications comprises a plurality of, receiver elements distributed along or around the receiver and/or comprises an optical guide configured to receive radiation and convey at least part of the radiation along the optical guide to at least one of the receiver elements.Type: GrantFiled: December 19, 2017Date of Patent: August 29, 2023Assignee: PURELIFI LIMITEDInventors: Mohamed Sufyan Islim, Harald Haas
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Polarization division multiplexed (PDM) communication systems and devices and methods of use thereof
Patent number: 11742977Abstract: Among the various aspects of the present disclosure is the provision of systems or methods for polarization division multiplexed (PDM) optical transmission. For example, the PDM optical transmission system can comprise a chip with one or more aluminum nanowire filters attached to the surface of the chip, such as division of focal Plane (DoFP) polarimeter filter array bonded on the receiver IC.Type: GrantFiled: January 27, 2020Date of Patent: August 29, 2023Assignee: Washington UniversityInventors: Roger Chamberlain, Darko Ivanovich, Viktor Gruev -
Patent number: 11728895Abstract: Related to an optical communication module, the optical communication module comprises a main body, an optical communication assembly and a second circuit board. The main body comprises a housing and a first circuit board disposed on the housing. The housing and the first circuit board together form an airtight cavity of the main body, and the first circuit board comprises two first electric interfaces. The optical communication assembly is accommodated in the airtight cavity and comprises a substrate, an optical communication element and a second electric interface. The optical communication element disposed on the substrate. One of the two first electric interfaces of the first circuit board is electrically connected to the second electric interface. The second circuit board comprises a third electric interface and the other one of the two first electric interfaces of the first circuit board is electrically connected to the third electric interface.Type: GrantFiled: May 25, 2021Date of Patent: August 15, 2023Assignee: Global Technology Inc.Inventors: Jian-Hong Luo, Dong-Biao Jiang, Qilin Hong, Taotao Ye