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    SYSTEM FOR PULSED LASER OPTICAL DATA TRANSMISSION WITH RECEIVER RECOVERABLE CLOCK
    3.
    发明公开
    SYSTEM FOR PULSED LASER OPTICAL DATA TRANSMISSION WITH RECEIVER RECOVERABLE CLOCK 审中-公开

    公开(公告)号：US20240313879A1

    公开(公告)日：2024-09-19

    申请号：US18675378

    申请日：2024-05-28

    申请人： NewPhotonics Ltd.

    发明人： Yosef Ben-Ezra ,  Yaniv Ben-Haim

    IPC分类号： H04J14/08 ,  H04B10/40 ,  H04B10/50 ,  H04B10/524 ,  H04B10/60

    CPC分类号： H04J14/08 ,  H04B10/524 ,  H04B10/60 ,  H04B10/40 ,  H04B10/50

    摘要： A system, comprising an optical transmitter configured to modulate a pulsed laser signal based on a plurality of data signals to form a plurality of modulated optical data signals, optical time division multiplex the plurality of modulated optical data signals to obtain a multiplexed optical data signal, and transmit the multiplexed optical data signal together with an optical clock signal derived from the pulsed laser signal; and an optical receiver that includes a clock recovery branch configured to recover the optical clock signal into a plurality of phase-shifted recovered optical clock signals and a data branch with a plurality of saturable absorbers (SA), each SA being in optical communication with one of the phase-shifted recovered optical clock signals and configured to receive the multiplexed optical data signal and to transmit of one of the plurality of modulated optical data signals according to the recovered optical clock signal.

    System and methods for coherent PON architecture and burst-mode reception
    6.
    发明授权
    System and methods for coherent PON architecture and burst-mode reception 有权

    公开(公告)号：US11949497B2

    公开(公告)日：2024-04-02

    申请号：US17838853

    申请日：2022-06-13

    申请人： CABLE TELEVISION LABORATORIES, INC.

    发明人： Zhensheng Jia ,  Luis Alberto Campos ,  Curtis Dean Knittle

    IPC分类号： H04B10/00 ,  H04J14/02 ,  H04J14/08

    CPC分类号： H04J14/023 ,  H04J14/0204 ,  H04J14/0282 ,  H04J14/08

    摘要： 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.

    PHOTONIC PRECISION DELAY COMPONENT FOR HIGH DYNAMIC DELAY RANGE
    7.
    发明公开
    PHOTONIC PRECISION DELAY COMPONENT FOR HIGH DYNAMIC DELAY RANGE 审中-公开

    公开(公告)号：US20240089076A1

    公开(公告)日：2024-03-14

    申请号：US18463369

    申请日：2023-09-08

    申请人： IHP GmbH-Innovations for High Performance Microelectronics/Leibniz-Instit. für

    发明人： Gerhard KAHMEN ,  Lars ZIMMERMANN

    IPC分类号： H04L7/00 ,  H04J14/08

    CPC分类号： H04L7/0075 ,  H04J14/08

    摘要： An electronic-photonic integrated precision delay-control component comprises a coarse-delay switching unit that is configured to assume one of a plurality of selectable switching states and to feed, in a given one of the switching states, an optical input signal forward to at least one of a plurality of selectable optical coarse-delay paths. A controllable fine-delay unit is configured to subject the optical input signal to a selectable fine group-delay amount that is tuneable between zero and a maximum fine group-delay amount. The coarse-delay switching unit and the fine-delay unit are arranged in a series connection to control application of a respective total group-delay amount to the optical input signal on any selectable total delay path, the total group-delay amount corresponding to a sum of the respective coarse group-delay amount and of the selectable fine group-delay amount. Co-integration of electronic components allows a complete pulse train generation on one chip with low sensitivity to perturbation, low drift and low manufacturing costs. A desired delay of individual pulses of the optical input signal can be tuned on chip with particularly high precision at particularly high pulse repetition frequencies.

    SYNCHRONIZATION IN OPTICAL WIRELESS NETWORKS FOR INTERFERENCE SUPPRESSING
    8.
    发明公开
    SYNCHRONIZATION IN OPTICAL WIRELESS NETWORKS FOR INTERFERENCE SUPPRESSING 审中-公开

    公开(公告)号：US20240056183A1

    公开(公告)日：2024-02-15

    申请号：US17766665

    申请日：2020-09-29

    申请人： SIGNIFY HOLDING B.V.

    发明人： Andries VAN WAGENINGEN ,  Karnekumar ARULANDU

    IPC分类号： H04B10/112 ,  H04J14/08

    CPC分类号： H04B10/112 ,  H04J14/08

    摘要： In an optical wireless communication, OWC, network (100), time division multiple access, TDMA, is commonly used for interference suppression among multiple network devices (D1-Dn) associated to a single coordinator, or among adjacent coordinators (C1-Cn). However, an offset of MAC cycles among two adjacent coordinators (C1-C2) may still result in interference to a network device (D1) located in the overlapping area of the coverage areas of these two adjacent coordinators (C1-Cn). This invention is directed to various methods, apparatus, systems, computer program and computer-readable media for providing a mechanism to make use of an out-of-band channel to send a signal from a network device (D1) to the two adjacent coordinators (C1-C2), for assisting the alignment of MAC cycles among the two adjacent coordinators (C1-C2), and the out-of-band channel has a line-of-sight character, and is out-of-band as compared to the OWC network (100).