公开(公告)号：US20250167887A1

公开(公告)日：2025-05-22

申请号：US19033313

申请日：2025-01-21

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： LUIS ALBERTO CAMPOS ,  ZHENSHENG JIA ,  HAIPENG ZHANG ,  MU XU ,  JUNWEN ZHANG

IPC: H04B10/077

Abstract: 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.

公开(公告)号：US20250007619A1

公开(公告)日：2025-01-02

申请号：US18886474

申请日：2024-09-16

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： HAIPENG ZHANG ,  JUNWEN ZHANG ,  JINGJIE ZHU ,  MU XU ,  ZHENSHENG JIA

IPC: H04B10/69 ,  H04B10/516

Abstract: A method for allocating bandwidth to a first ONU, a second ONU, M1 ONUs, and M2 ONUs includes, during an allocation cycle, (i) granting a respective upstream time slot to, of a plurality of N ONUs, only each of the M1 ONUs, and (ii) granting a first upstream time slot to the first ONU. Each of the M1 ONUs and M2 ONUs is one of the plurality of N ONUs. The method also includes, during a subsequent cycle, (i) granting a respective upstream time slot to, of the plurality of N ONUs, only each of the M2 ONUs. The N ONUs includes a skipped-ONU that is one of either, and not both, the M1 ONUs and the M2 ONUs. The method includes, during the subsequent allocation cycle, granting a second upstream time slot to a second ONU, which is not one of the plurality of N ONUs.

公开(公告)号：US20240405907A1

公开(公告)日：2024-12-05

申请号：US18801036

申请日：2024-08-12

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： MU XU ,  ZHENSHENG JIA ,  HAIPENG ZHANG ,  LUIS ALBERTO CAMPOS

IPC: H04J4/00 ,  H04L5/26

Abstract: 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.

公开(公告)号：US20210226718A1

公开(公告)日：2021-07-22

申请号：US17208697

申请日：2021-03-22

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： ZHENSHENG JIA ,  Luis Alberto Campos ,  Curtis Dean Knittle

IPC: H04J14/02 ,  H04J14/08

Abstract: An optical network communication system utilizes a passive optical network including an optical hub having an optical line terminal, downstream transmitter, an upstream receiver, a processor, and a multiplexer. The upstream receiver includes a plurality of TWDMA upstream subreceivers. The system includes a power splitter for dividing a coherent optical signal from the optical hub into a plurality of downstream wavelength signals, a long fiber to carry the coherent optical signal between the optical hub and the power splitter, and a plurality of serving groups. Each serving group includes a plurality of optical network units configured to (i) receive at least one downstream wavelength signal, and (ii) transmit at least one upstream wavelength signal. The system includes a plurality of short fibers to carry the downstream and upstream wavelength signals between the power splitter and the optical network units, respectively. Each upstream subreceiver receives a respective upstream wavelength signal.

公开(公告)号：US20250132835A1

公开(公告)日：2025-04-24

申请号：US18925317

申请日：2024-10-24

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： ZHENSHENG JIA ,  HAIPENG ZHANG ,  CURTIS D. KNITTLE

IPC: H04B10/27 ,  H04B10/40

Abstract: A first coherent transceiver for a CPON includes a MAC layer for enabling dual-mode operation of the first coherent transceiver, a software management and control module for communicating with a second transceiver over an ODN communication channel, a coherent DSP in communication with the software management and control module and configured to process a digital signal from the MAC layer, and an optics infrastructure configured to transmit and receive analog data signals over the ODN to and from the second transceiver, respectively. The analog data signals include a communication subcarrier and a data subcarrier. The digital data signal includes a first data portion with control information from the communication subcarrier, and a second data portion with primary information from the data subcarrier. The coherent DSP further dynamically reconfigures digital data signal processing between first and second operational modes based on a transport type of the data channel subcarrier.

公开(公告)号：US20220303102A1

公开(公告)日：2022-09-22

申请号：US17838659

申请日：2022-06-13

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： ZHENSHENG JIA ,  LUIS ALBERTO CAMPOS ,  CURTIS DEAN KNITTLE ,  JING WANG

IPC: H04L5/02 ,  H04H20/69 ,  H04L12/28 ,  H04H20/78 ,  H04N21/61

Abstract: An optical network includes a transmitter portion configured to transmit a digitized stream of symbols over a digital optical link, a mapping unit disposed within the transmitter portion and configured to code the transmitted digitized stream of symbols with a mapping code prior to transmission over the digital optical link, a receiver portion configured to recover the coded stream of symbols from the digital optical link, and a demapping unit disposed within the receiver portion and configured to map the recovered coded stream of symbols into an uncoded digitized signal corresponding to the digitized stream of symbols at the transmitter portion prior to coding by the mapping unit.

公开(公告)号：US20210167859A1

公开(公告)日：2021-06-03

申请号：US17169600

申请日：2021-02-08

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： ZHENSHENG JIA ,  Luis Alberto Campos ,  Curtis Dean Knittle

IPC: H04B10/50 ,  H04B10/64 ,  H04B10/532 ,  H04B10/63 ,  H04J14/04 ,  H04J14/06

Abstract: An injection locked transmitter for an optical communication network includes a primary seed laser source input substantially confined to a single longitudinal mode, an input data stream, and a laser injected modulator including at least one secondary laser having a resonator frequency that is injection locked to a frequency of the single longitudinal mode of the primary seed laser source. The laser injected modulator is configured to receive the primary seed laser source input and the input data stream, and output a laser modulated data stream.

公开(公告)号：US20220029708A1

公开(公告)日：2022-01-27

申请号：US17498232

申请日：2021-10-11

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： MU XU ,  ZHENSHENG JIA

IPC: H04B10/61 ,  H04B10/2575 ,  H04L1/00

Abstract: Methods, systems, and devices for a decision directed multi-modulus searching algorithm are described. A receiver may receive a signal including a set of data symbols. The receiver may iteratively determine a set of centroids for demodulating the set of data symbols (e.g., as part of a training procedure). The centroids may be used to demodulate the set of data symbols according to a modulation constellation associated with the set of data symbols. The training procedure may include, for each data symbol of a subset of data symbols, assigning a centroid of the set of centroids to each data symbol and updating the set of centroids based on assigning the centroid to each data symbol. The receiver may demodulate the set of data symbols based on the updated set of centroids.

公开(公告)号：US20200374009A1

公开(公告)日：2020-11-26

申请号：US16989572

申请日：2020-08-10

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： JING WANG ,  LUIS ALBERTO CAMPOS ,  ZHENSHENG JIA ,  CURTIS DEAN KNITTLE

IPC: H04B10/2507 ,  H03M3/00

Abstract: A baseband processing unit includes a baseband processor configured to receive a plurality of component carriers of a radio access technology wireless service, and a delta-sigma digitization interface configured to digitize at least one carrier signal of the plurality of component carriers into a digitized bit stream, for transport over a transport medium, by (i) oversampling the at least one carrier signal, (ii) quantizing the oversampled carrier signal into the digitized bit stream using two or fewer quantization bits.

公开(公告)号：US20200336211A1

公开(公告)日：2020-10-22

申请号：US16855921

申请日：2020-04-22

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： HAIPENG ZHANG ,  JUNWEN ZHANG ,  MU XU ,  ZHENSHENG JIA ,  LUIS ALBERTO CAMPOS

IPC: H04B10/50 ,  G02F1/21 ,  G02B27/28 ,  H01S5/323 ,  H01S5/32 ,  H04B10/516 ,  H04B10/25

Abstract: 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.