Patents by Inventor Luis Alberto Campos
Luis Alberto Campos has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12206449Abstract: A fiber-optic network that uses as a hybrid telecommunication and sensing system when telecommunication signals and probe signals are transmitted across a shared fiber strand in either a co-propagated or counter-propagated direction is disclosed. Probe signals generated by a sensing termination system and/or by one or more end devices are used to analyze conditions affecting network hardware and/or events occurring within the fiber distribution area.Type: GrantFiled: October 18, 2021Date of Patent: January 21, 2025Assignee: Cable Television Laboratories, Inc.Inventors: Luis Alberto Campos, Zhensheng Jia, Haipeng Zhang, Mu Xu, Junwen Zhang
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Publication number: 20250016585Abstract: An ad-hoc wireless network is implemented by a plurality of wireless access points to detect and report failure of a concurrently implemented conventional network. The wireless access points collect and store network status information of the conventional network and send the network status information to a centralized emergency manager when failure of the conventional network is detected. The ad-hoc wireless network may also provide backhaul connectivity to a wireless access point of the failed conventional network for emergency communication.Type: ApplicationFiled: September 24, 2024Publication date: January 9, 2025Inventors: LUIS ALBERTO CAMPOS, BERNARDO HUBERMAN, JASON W. RUPE, MARTHA LURIE LYONS, PHILIP ROSENBERG-WATT
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Patent number: 12184401Abstract: A passive optical tap includes a first wavelength division multiplexer (WDM), a second WDM, a first optical splitter, and a second optical splitter. The first wavelength division multiplexer (WDM) has a first plurality of single-channel ports. The second WDM has a second plurality of single-channel ports. The first optical splitter has a first combined-power port optically coupled to a first one of the first plurality of single-channel ports and a first split-power port optically coupled to a first one of the second plurality of single-channel ports. The second optical splitter has a second combined-power port optically coupled to a second one of the second plurality of single-channel ports and a second split-power port optically coupled to a second one of the first plurality of single-channel ports.Type: GrantFiled: October 14, 2022Date of Patent: December 31, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Mu Xu, Luis Alberto Campos, Curtis D. Knittle, Haipeng Zhang, Zhensheng Jia
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Publication number: 20240421912Abstract: 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: ApplicationFiled: August 26, 2024Publication date: December 19, 2024Inventors: Luis Alberto Campos, Zhensheng Jia
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Patent number: 12170569Abstract: Adaptive modulation coding schemes improve spectral efficiency of telecommunication networks by implementing MCSs specific to each of a plurality of end devices in operable communication with a hub. For example, the MCSs may be specific to a channel, a wavelength, a distance, or capabilities of an end device. The MCSs are selected to include the highest modulation format and highest forward error correction coding rate that can be applied to a telecommunication signal without surpassing a signal parameter threshold.Type: GrantFiled: November 24, 2021Date of Patent: December 17, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Mu Xu, Zhensheng Jia, Junwen Zhang, Haipeng Zhang, Luis Alberto Campos
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Patent number: 12170545Abstract: A communication network includes a coherent optics transmitter, a coherent optics receiver, an optical transport medium operably coupling the coherent optics transmitter to the coherent optics receiver, and a coherent optics interface. The coherent optics interface includes a lineside interface portion, a clientside interface portion, and a control interface portion.Type: GrantFiled: October 3, 2022Date of Patent: December 17, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Luis Alberto Campos, Zhensheng Jia, Matthew D. Schmitt
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Patent number: 12167185Abstract: A radio frequency (RF) beam transmission component having optical inputs and electrical outputs may include a wavelength selective switch (WSS) that has a plurality of optical WSS outputs. Each optical WSS output may be configured to transmit one or more wavelengths of the incoming optical signals. The RF beam transmission component may include a plurality of photodetectors (PD), each photodetector having an optical PD input coupled to one or more of said plurality of optical WSS outputs and a corresponding electrical output of a plurality of PD electrical outputs. The RF beam transmission component may further include a lens that has a plurality of electrical inputs and each electrical input may be electrically coupled to at least one of the plurality of electrical PD outputs. The lens may further have a plurality of electrical lens output ports.Type: GrantFiled: January 23, 2023Date of Patent: December 10, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Mu Xu, Luis Alberto Campos, Zhensheng Jia, Lin Cheng
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Publication number: 20240405907Abstract: A method for extracting a plurality of data streams from a time-frequency division multiplexed (TFDM) signal includes determining a plurality of sub-channels of the TFDM signal, where each of the plurality of sub-channels has a respective one of a plurality of frequency ranges. The method also includes down-converting, based on the plurality of frequency ranges, the TFDM signal into a plurality of down-converted signals, where each down-converted signal corresponds to a respective one of the plurality of sub-channels. The method also includes extracting the plurality of data streams from a respective one of the plurality of down-converted signals.Type: ApplicationFiled: August 12, 2024Publication date: December 5, 2024Inventors: MU XU, ZHENSHENG JIA, HAIPENG ZHANG, LUIS ALBERTO CAMPOS
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Patent number: 12149339Abstract: A coherent passive optical network extender apparatus includes an extender transceiver for communication with an associated optical headend. The extender transceiver includes at least one receiving portion, at least one transmitting portion, and an extension processor. The apparatus further includes a signal adaptation unit configured to convert a downstream electrical transmission lane into a plurality of individual wavelengths. Each of the converted individual wavelengths are for transmission to one of an optical node and an end user. The apparatus further includes a plurality of transceivers, disposed within the signal adaptation unit, and configured to process and transmit the converted individual wavelengths as a bundle for retransmission to the respective end users.Type: GrantFiled: June 26, 2023Date of Patent: November 19, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Zhensheng Jia, Curtis Dean Knittle, Luis Alberto Campos
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Patent number: 12132522Abstract: An optical full-field transmitter for an optical communications network includes a primary laser source configured to provide a narrow spectral linewidth for a primary laser signal, and a first intensity modulator in communication with a first amplitude data source. The first intensity modulator is configured to output a first amplitude-modulated optical signal from the laser signal. The transmitter further includes a first phase modulator in communication with a first phase data source and the first amplitude-modulated optical signal. The first phase modulator is configured to output a first two-stage full-field optical signal. The primary laser source has a structure based on a III-V compound semiconductor.Type: GrantFiled: June 26, 2023Date of Patent: October 29, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Haipeng Zhang, Junwen Zhang, Mu Xu, Zhensheng Jia, Luis Alberto Campos
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Patent number: 12107668Abstract: A coherent passive optical network includes a downstream transceiver and first and second upstream transceivers in communication with an optical transport medium. The downstream transceiver includes a downstream processor for mapping a downstream data stream to a plurality of sub-bands, and a downstream transmitter for transmitting a downstream optical signal modulated with the plurality of sub-bands. The first upstream transceiver includes a first local oscillator (LO) for tuning a first LO center frequency to a first sub-band of the plurality of sub-bands, and a first downstream receiver for coherently detecting the downstream optical signal within the first sub-band. The second upstream transceiver includes a second downstream receiver configured for coherently detecting the downstream optical signal within a second sub-band of the plurality of sub-bands. The downstream processor dynamically allocates the first and second sub-bands to the first and second transceivers in the time and frequency domains.Type: GrantFiled: July 2, 2023Date of Patent: October 1, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Junwen Zhang, Zhensheng Jia, Mu Xu, Haipeng Zhang, Luis Alberto Campos
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Patent number: 12107628Abstract: A full duplex communication network includes an optical transmitter end having a first coherent optics transceiver, an optical receiver end having a second coherent optics transceiver, and an optical transport medium operably coupling the first coherent optics transceiver to the second coherent optics transceiver. The first coherent optics transceiver is configured to (i) transmit a downstream optical signal at a first wavelength, and (ii) simultaneously receive an upstream optical signal at a second wavelength. The second coherent optics transceiver is configured to (i) receive the downstream optical signal, and (ii) simultaneously transmit the upstream optical signal. The first wavelength has a first center frequency separated from a second center frequency of the second wavelength.Type: GrantFiled: October 31, 2022Date of Patent: October 1, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Zhensheng Jia, Luis Alberto Campos, Jing Wang, Mu Xu, Haipeng Zhang, Curtis Dean Knittle
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Patent number: 12101652Abstract: An ad-hoc wireless network is implemented by a plurality of wireless access points to detect and report failure of a concurrently implemented conventional network. The wireless access points collect and store network status information of the conventional network and send the network status information to a centralized emergency manager when failure of the conventional network is detected. The ad-hoc wireless network may also provide backhaul connectivity to a wireless access point of the failed conventional network for emergency communication.Type: GrantFiled: September 25, 2019Date of Patent: September 24, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Luis Alberto Campos, Bernardo Huberman, Jason W. Rupe, Martha Lurie Lyons, Philip Rosenberg-Watt
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Patent number: 12101120Abstract: A method for chromatic dispersion pre-compensation in an optical communication network includes (1) distorting an original modulated signal according to an inverse of a transmission function of the optical communication network, to generate a compensated signal, (2) modulating a magnitude of an optical signal in response to a magnitude of the compensated signal, and (3) modulating a phase of the optical signal, after modulating the magnitude of the optical signal, in response to a phase of the compensated signal.Type: GrantFiled: January 2, 2023Date of Patent: September 24, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Mu Xu, Zhensheng Jia, Haipeng Zhang, Luis Alberto Campos, Junwen Zhang
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Patent number: 12088348Abstract: A method for automatic power and modulation management in a communication network includes (a) generating a discontinuous management function that is a weighted function of at least spectral efficiency and power consumption of the communication network, (b) determining, from the discontinuous management function, an optimal modulation format, an optimal forward error correction (FEC) rate, and an optimal output power of a transmitter of the communication network, which collectively achieve a maximum value of the management function, and (c) causing the transmitter to operate according to the optimal modulation format, the optimal FEC rate, and the optimal output power.Type: GrantFiled: July 10, 2023Date of Patent: September 10, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Mu Xu, Zhensheng Jia, Luis Alberto Campos, Chris Stengrim
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Patent number: 12088344Abstract: An integrated transceiver is provided for a coherent optical communication network. The integrated transceiver includes a first optical transceiver portion configured to receive and transmit coherent optical signals from and to the coherent optical communication network, respectively. The integrated transceiver further includes a second optical transceiver portion configured to receive and transmit non-coherent optical signals respectively from and to a non-coherent optical communication network. The integrated transceiver further includes an integrated media access control (MAC) processor disposed between the first and second optical transceiver portions.Type: GrantFiled: April 5, 2022Date of Patent: September 10, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Mu Xu, Luis Alberto Campos, Curtis Dean Knittle, Haipeng Zhang, Zhensheng Jia
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Publication number: 20240295419Abstract: A fiber-optic network is used to interrogate a geographic area for propagating waves initiated by events external to the fiber-optic network. The probe signals are frequency modulation aligned and/or carrier frequency aligned with one another. Scattered energy indicative of probe signals' interactions with the propagating wave are time aligned with one another, amplitude normalized, cross correlated and/or added together to improve signal-to-noise and spatial resolution.Type: ApplicationFiled: April 8, 2024Publication date: September 5, 2024Inventors: Luis Alberto CAMPOS, Zhensheng JIA, Haipeng ZHANG, Mu XU, Junwen ZHANG
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Patent number: 12074691Abstract: A communications network includes a central communication unit, an optical transport medium, and a plurality of remote radio base stations. The central communication unit generates, within a selected millimeter-wave frequency band, a plurality of adjacent two-tone optical frequency conjugate pairs. Each conjugate pair includes a first optical tone carrying a modulated data signal, and a second optical tone carrying a reference local oscillator signal. The optical transport medium transports the plurality of two-tone conjugate pairs to the plurality of radio base stations, and each base station receives at least one conjugate pair at an optical front end thereof. The optical front end separates the first optical tone from the second optical tone, and converts the first optical tone into a millimeter-wave radio frequency electrical signal.Type: GrantFiled: January 23, 2023Date of Patent: August 27, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Mu Xu, Ruoyu Sun, Balkan Kecicioglu, Junwen Zhang, Haipeng Zhang, Zhensheng Jia, Luis Alberto Campos
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Patent number: 12074411Abstract: An injection locking laser source is provided for an optical communications system. The injection locking laser source includes a laser cavity configured to receive an externally injected low linewidth primary light source. The laser cavity includes a cavity length, a cavity facet reflectivity, and a cavity quality factor. The injection locking laser source further includes an emitting region configured to output a secondary light source injection locked to the externally injected low linewidth primary light source at a stable detuning frequency based on a photon number, a steady-state phase, and a carrier number of the primary light source injected into the cavity.Type: GrantFiled: July 17, 2023Date of Patent: August 27, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Haipeng Zhang, Zhensheng Jia, Luis Alberto Campos, Mu Xu, Junwen Zhang
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Patent number: 12074646Abstract: 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: GrantFiled: August 26, 2022Date of Patent: August 27, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Luis Alberto Campos, Zhensheng Jia