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    System and methods for distribution of heterogeneous wavelength multiplexed signals over optical access network
    1.
    发明专利
    System and methods for distribution of heterogeneous wavelength multiplexed signals over optical access network 未知

    公开(公告)号：GB2584266B

    公开(公告)日：2021-04-14

    申请号：GB202016096

    申请日：2017-06-20

    Applicant: CABLE TELEVISION LABORATORIES INC

    Inventor： LUIS ALBERTO CAMPOS ,  ZHENSHENG JIA

    IPC: H04J14/02

    Abstract: An optical network communication system includes an optical hub, an optical distribution center, at least one fiber segment, and at least two end users. The optical hub includes an intelligent configuration unit configured to monitor and multiplex at least two different optical signals into a single multiplexed heterogeneous signal. The optical distribution center is configured to individually separate the at least two different optical signals from the multiplexed heterogeneous signal. The at least one fiber segment connects the optical hub and the optical distribution center, and is configured to receive the multiplexed heterogeneous signal from the optical hub and distribute the multiplexed heterogeneous signal to the optical distribution center. The at least two end users each include a downstream receiver configured to receive one of the respective separated optical signals from the optical distribution center.

    Systems and methods for a universal data link with demodulation and modulation only processing at intermediate nodes
    3.
    发明专利
    Systems and methods for a universal data link with demodulation and modulation only processing at intermediate nodes 未知

    公开(公告)号：GB2585296B

    公开(公告)日：2022-12-28

    申请号：GB202013209

    申请日：2019-01-23

    Applicant: CABLE TELEVISION LABORATORIES INC

    Inventor： LUIS ALBERTO CAMPOS ,  JENNIFER ANDREOLI-FANG ,  JUDSON D CARY ,  DAVID DANIEL SMITH

    IPC: H04L1/00 ,  H04B7/155 ,  H04L27/00

    Abstract: A method for transmitting data through a multi-media communication network includes converting transmission entities into data symbols at a first communication device, transmitting the data symbols from the first communication device to a second communication device through at least two different types of communication media using only lower PHY layers of the at least two different types of communication media, and converting the data symbols into transmission entities at the second communication device. A network implementing a universal data link includes a first communication device configured to convert transmission entities into data symbols, a second communication device configured to convert the data symbols into transmission entities, at least a first communication medium and a second communication medium communicatively coupled between the first communication device and the second communication device, and a first physical-layer translator configured to translate data symbols without converting the data symbols into transmission entities. In order to reduce processing time and end-to-end latency, the physical-layer translator only performs demodulation and modulation operations, optionally also equalization.

    System and methods for distribution of heterogeneous wavelength multiplexed signals over optical access network
    4.
    发明专利
    System and methods for distribution of heterogeneous wavelength multiplexed signals over optical access network 未知

    公开(公告)号：GB2577638A

    公开(公告)日：2020-04-01

    申请号：GB201915208

    申请日：2017-06-20

    Applicant: CABLE TELEVISION LABORATORIES INC

    Inventor： LUIS ALBERTO CAMPOS ,  ZHENSHENG JIA

    IPC: H04J14/02

    Abstract: An optical network communication system includes an optical hub 442 at the head-end, an optical distribution centre 404, connected by at least one fibre segment 408, and at least two end users 406 downstream of the distribution centre. The optical hub includes an intelligent configuration unit (not shown) which multiplexes at least two different optical signals 441(1), 441(2), 441(3) into a single multiplexed heterogeneous signal. The optical distribution centre demultiplexes the heterogeneous signal. The heterogeneous optical signal comprises an optical signal of a first type and an optical signal of a second different type, each selected from the following: an analogue optical signal 418, an intensity modulated signal suitable for direct detection (e.g. PAM, RZ or NRZ), a signal suitable for coherent detection (e.g. BPSK, QPSK or higher order QAM), or a differentially modulated signal (e.g. DPSK or D-QPSK). Also claimed is a method of assigning wavelength spectrum based on characteristics of the fibre segment and parameters of the at least two different optical signals. The distribution centre may include a wavelength filter 446 and a downstream optical switch 448.

    Systems and methods for a universal data link with demodulation and modulation only processing at intermediate nodes
    7.
    发明专利
    Systems and methods for a universal data link with demodulation and modulation only processing at intermediate nodes 未知

    公开(公告)号：GB2585296A

    公开(公告)日：2021-01-06

    申请号：GB202013209

    申请日：2019-01-23

    Applicant: CABLE TELEVISION LABORATORIES INC

    Inventor： LUIS ALBERTO CAMPOS ,  JENNIFER ANDREOLI-FANG ,  JUDSON D CARY ,  DAVID DANIEL SMITH

    IPC: H04L1/00 ,  H04B7/155 ,  H04L27/00

    Abstract: A method for transmitting data through a multi-media communication network includes converting transmission entities into data symbols at a first communication device, transmitting the data symbols from the first communication device to a second communication device through at least two different types of communication media using only lower PHY layers of the at least two different types of communication media, and converting the data symbols into transmission entities at the second communication device. A network implementing a universal data link includes a first communication device configured to convert transmission entities into data symbols, a second communication device configured to convert the data symbols into transmission entities, at least a first communication medium and a second communication medium communicatively coupled between the first communication device and the second communication device, and a first physical-layer translator configured to translate data symbols without converting the data symbols into transmission entities. In order to reduce processing time and end-to-end latency, the physical-layer translator only performs demodulation and modulation operations, optionally also equalization.

    Fiber communication systems and methods
    9.
    发明专利
    Fiber communication systems and methods 未知

    公开(公告)号：GB2565012A

    公开(公告)日：2019-01-30

    申请号：GB201818417

    申请日：2017-03-21

    Applicant: CABLE TELEVISION LABORATORIES INC

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

    IPC: H04B10/50 ,  H04J14/02 ,  H04J14/06

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

    System and methods for distribution of heterogeneous wavelength multiplexed signals over optical access network
    10.
    发明专利
    System and methods for distribution of heterogeneous wavelength multiplexed signals over optical access network 未知

    公开(公告)号：GB2584266A

    公开(公告)日：2020-11-25

    申请号：GB202016096

    申请日：2017-06-20

    Applicant: CABLE TELEVISION LABORATORIES INC

    Inventor： LUIS ALBERTO CAMPOS ,  ZHENSHENG JIA

    IPC: H04J14/02

    Abstract: This application discloses distributing a heterogenous optical signal over a fibre segment of an optical network. The heterogeneous optical signal comprises an optical signal component of a first type and an optical signal component of a second different type, each selected from the following: an analogue optical signal, an intensity modulated signal suitable for direct detection (e.g. PAM, RZ or NRZ), a signal suitable for coherent detection (e.g. BPSK, QPSK or higher order QAM), or a differentially modulated signal (e.g. DPSK or D-QPSK). The invention relates to assigning wavelength spectrum to each component signal of the heterogenous optical signal, based on a characteristic of the fibre segment and parameters of the component optical signals. The fibre segment characteristic may be fibre type, fibre length, implementation of amplification or loss devices, implementation of wavelength filters or splitters, or network topology. The parameters of the component optical signals may include optical power levels, wavelength, wavelength spacing, modulation format, modulation bandwidth, channel coding/decoding, polarisation multiplexing or forward error correction.

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