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    10G rate OLT terminal transceiver integrated chip based on XGSPON with EML laser
    3.
    发明授权
    10G rate OLT terminal transceiver integrated chip based on XGSPON with EML laser 有权

    公开(公告)号：US12113575B2

    公开(公告)日：2024-10-08

    申请号：US18324792

    申请日：2023-05-26

    Applicant: XIAMEN EOCHIP SEMICONDUCTOR CO., LTD

    Inventor： Jinghu Li ,  Zhang Fan ,  An Lin

    IPC: H04B10/50 ,  H04B10/564 ,  H04Q11/00

    CPC classification number: H04B10/503 ,  H04B10/564 ,  H04Q11/0067

    Abstract: A 10G rate OLT terminal transceiver integrated chip based on XGSPON with EML laser includes: a burst mode receiver RX which processes amplitude detection, and outputs the signal whose amplitude and waveform pulse width met the threshold requirements to a host, and comprises a fast recovery module to discharge charges in an AC coupling capacitor to achieve multi-packet transmission without mutual interference and to meet the timing sequence requirement of the XGSPON protocol; a continuous mode transmitter TX which receives the electrical signal attenuated by a PCB board, and selects a bypass BYPASS path or a clock data recovery CDR path according to a degree of attenuation to drive the EML laser; a digital control unit DIGIITAL which communicates with the host and provides control signals to the burst mode receiver RX and the continuous mode transmitter TX; and a power module POWER.

    Method of operating a bidirectional optical transmission link and corresponding optical transmission link
    4.
    发明授权
    Method of operating a bidirectional optical transmission link and corresponding optical transmission link 有权

    公开(公告)号：US12101125B2

    公开(公告)日：2024-09-24

    申请号：US17980005

    申请日：2022-11-03

    Applicant: Adtran Networks SE

    Inventor： Shihuan Zou ,  Ross Saunders ,  Thang Hoang

    IPC: H04B10/00 ,  H04B10/40 ,  H04B10/50 ,  H04B10/524

    CPC classification number: H04B10/524 ,  H04B10/40 ,  H04B10/503

    Abstract: The invention relates to a method and apparatus of operating a bidirectional optical transmission link. The optical transmission link includes a first and a second optical transceiver at a dedicated end of the optical transmission link and an optical path connecting the first and second optical transceiver. The optical transceivers apply the methods of converting an electrical digital transmit signal into an electrical PAM-n transmit signal, pre-emphasizing the electrical PAM-n transmit signal) by digital filtering and using the pre-emphasized electrical PAM-n signal2) as modulating signal for optically modulating an optical carrier signal. The optical modulation method deployed is configured to create an optical PAM-n transmit signal with a positive or negative chirp. For initializing the optical transmission link (100), an initialization process is performed in which at least one loop including the following steps is run through creating, in the first optical transceiver, an optical PAM-n training transmit signal and transmitting it to the second optical transceiver, the optical PAM-n training transmit signal being created using an electrical PAM-n training transmit signal including a binary training sequence. Initial values for filter parameters are used for pre-emphasizing the electrical PAM-n training transmit signal and an initial value is used for a chirp parameter that defines the positive or negative chirp of the optical PAM-n training transmit signal receiving, in the second optical transceiver, the optical PAM-n training transmit signal as an optical PAM-n training receive signal using direct detection. The optical PAM-n training receive signal is converted into an electrical PAM-n training receive signal. The method includes obtaining sampled values of the electrical PAM-n training receive signal (RPel,1) by sampling this signal at predetermined points in time; and using the sampled values obtained and corresponding sampled values of an ideal electrical PAM-n transmit signal to determine operating values for the filter parameters and an operating value for the chirp parameter.

    Enabling communication with a drone over a wide geographical area using a wireless telecommunication network
    6.
    发明授权
    Enabling communication with a drone over a wide geographical area using a wireless telecommunication network 有权

    公开(公告)号：US12095509B2

    公开(公告)日：2024-09-17

    申请号：US17680157

    申请日：2022-02-24

    Applicant: T-Mobile USA, Inc.

    Inventor： Muhammad Tawhidur Rahman

    IPC: H04B10/50 ,  H04B10/40 ,  H04B17/318

    CPC classification number: H04B10/503 ,  H04B10/40 ,  H04B17/318

    Abstract: The disclosed system receives, from a controller associated with an unmanned vehicle, a first instruction to deliver to the unmanned vehicle. The first instruction is delivered to a network through a radio frequency channel associated with the network. The controller provides a coverage area in which the controller can directly communicate with the unmanned vehicle, however, the unmanned vehicle is outside of the coverage area associated with the controller. The system converts the first instruction received through the radio frequency channel to a second instruction encoded in a second medium. The system delivers the second instruction to the unmanned vehicle using a first antenna operating in the second medium. The unmanned vehicle includes a receiver configured to operate in the second medium. The first antenna is oriented to provide coverage in a geographical area in which the network does not provide radio frequency coverage.

    Communication systems having optical power supplies
    9.
    发明授权
    Communication systems having optical power supplies 有权

    公开(公告)号：US12066653B2

    公开(公告)日：2024-08-20

    申请号：US17727317

    申请日：2022-04-22

    Applicant: Nubis Communications, Inc.

    Inventor： Peter Johannes Winzer ,  Ron Zhang

    IPC: F21V8/00 ,  G02B6/26 ,  G02B6/42 ,  H04B10/50

    CPC classification number: G02B6/0085 ,  G02B6/262 ,  G02B6/4206 ,  G02B6/4261 ,  H04B10/503

    Abstract: A system includes a housing including a front panel, a rear panel, an upper panel, and a lower panel. The system includes a first circuit board or substrate, at least one data processor coupled to the first circuit board or substrate and configured to process data, and at least one optical module coupled to the first circuit board or substrate. Each optical module is configured to perform at least one of (i) convert input optical signals to electrical signals that are provided to the at least one data processor, or (ii) convert electrical signals received from the at least one data processor to output optical signals. The system includes at least one inlet fan mounted near the front panel and configured to increase an air flow across a surface of at least one of (i) the at least one data processor, (ii) a heat dissipating device thermally coupled to the at least one data processor, (iii) the at least one optical module, or (iv) a heat dissipating device thermally coupled to the at least one optical module. The system includes at least one laser module configured to provide optical power to the at least one optical module.

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