公开(公告)号：US12107630B2

公开(公告)日：2024-10-01

申请号：US17330326

申请日：2021-05-25

Applicant: REALTEK SEMICONDUCTOR CORPORATION

Inventor： Hung-Wen Lin ,  Mu-Jung Hsu

IPC: H04B10/50 ,  H04B10/508 ,  H04B10/516 ,  H04Q11/00

CPC classification number: H04B10/503 ,  H04B10/508 ,  H04B10/516 ,  H04Q11/0067

Abstract: The present application provides an optical network method and associated apparatus. The method includes: receiving uplink burst time assignment information; and enabling or disabling a laser module of a local end according to the uplink burst time assignment information.

公开(公告)号：US20240313862A1

公开(公告)日：2024-09-19

申请号：US18584186

申请日：2024-02-22

Applicant: AvicenaTech Corp.

Inventor： Robert Kalman ,  Bardia Pezeshki ,  Alexander Tselikov

IPC: H04B10/50 ,  H04B10/25 ,  H04B10/508

CPC classification number: H04B10/502 ,  H04B10/25 ,  H04B10/508

Abstract: An optical communication system may include microLEDs for use in communicating data between chips or multi-chip modules. The number of microLEDs may be greater than a number of electrical data lines for carrying data to be communicated. Signals on the electrical data lines may be inverse multiplexed, for example to allow for operation of the microLEDs at a rate slower than operation of electrical circuitry generating signals on the electrical data lines.

公开(公告)号：US12052059B1

公开(公告)日：2024-07-30

申请号：US18590908

申请日：2024-02-28

Applicant: Attochron, LLC

Inventor： Thomas M. Chaffee ,  Wayne H. Knox

IPC: H04B10/04 ,  H04B10/50 ,  H04B10/508 ,  H04B10/516

CPC classification number: H04B10/5162 ,  H04B10/502 ,  H04B10/508

Abstract: Systems and methods are described for transmitting information optically. For instance, a system may include an optical source configured to generate a beam of light. The system may include at least one modulator configured to encode data on the beam of light to produce an encoded beam of light/encoded plurality of pulses. The system may include a spectrally-equalizing amplifier configured to receive the encoded beam of light/encoded plurality of pulses from the at least one modulator and both amplify and filter the encoded beam of light/encoded plurality of pulses to produce a filtered beam of light/filtered plurality of pulses, thereby spectrally equalizing a gain applied to the encoded beam of light. In some cases, the system may slice the beam of slight, to ensure a detector has impulsive detection. In some cases, the system may include a temperature controller to shift a distribution curve of wavelengths of the optical source.

公开(公告)号：US20240204882A1

公开(公告)日：2024-06-20

申请号：US18529246

申请日：2023-12-05

Applicant: Airbus SAS

Inventor： Alberto COMIN ,  Ricardo BARRIOS

IPC: H04B10/69 ,  H04B10/112 ,  H04B10/508 ,  H04B10/54

CPC classification number: H04B10/6972 ,  H04B10/112 ,  H04B10/508 ,  H04B10/541

Abstract: An optical transmitter for quantum communication, including a QKD channel comprising at least QKD light source and configured to emit a stream of QKD encoded pulses; a reference channel including a reference light source and configured to emit a stream of reference pulses; and a control circuit connected to the QKD channel and to the reference light channel. The control circuit is configured to control the QKD channel and the reference light channel to emit the reference pulses with a predetermined time delay to the QKD encoded pulses. A difference of a wavelength of the QKD encoded pulses and a wavelength of the reference pulses is 5 nm or less. A corresponding optical receiver, an optical system and a method for quantum communication are also provided.

公开(公告)号：US20240129652A1

公开(公告)日：2024-04-18

申请号：US18486751

申请日：2023-10-13

Applicant: Nokia Solutions and Networks Oy

Inventor： Michiel VERPLAETSE ,  Yannick LEFEVRE

IPC: H04Q11/00 ,  H04B10/508 ,  H04B10/524

CPC classification number: H04Q11/0067 ,  H04B10/508 ,  H04B10/524

Abstract: A method for transmitting a first segment of a first modulation format, a second segment of a second modulation format and a third segment of a third modulation format, wherein the second segment is transmitted between the first segment and the third segment, wherein the first modulation format includes a first set of constellation points, wherein the second modulation format includes a second set of constellation points, wherein the third modulation format includes a third set of constellation points, wherein the second set is included in an intersection of the first set and the third set, wherein the first set and the third set differ by at least one constellation point.

公开(公告)号：US20240129042A1

公开(公告)日：2024-04-18

申请号：US18483978

申请日：2023-10-10

Applicant: NEC Corporation

Inventor： Ken-ichiro YOSHINO

IPC: H04B10/54 ,  H04B10/50 ,  H04B10/508

CPC classification number: H04B10/54 ,  H04B10/50575 ,  H04B10/508

Abstract: A communication device includes a nested modulator composed of sub modulators and a phase shifter. The nested modulator is controlled by: modulating a double pulse by phase and intensity modulation according to transmission information, wherein the double pulse thus modulated is transmitted to another communication device; controlling bias voltages applied respectively to the sub modulators so that a first error rate on the intensity modulation is minimized; and controlling a bias voltage applied to the phase shifter so that a second error rate on the phase modulation is minimized.

公开(公告)号：US11956022B2

公开(公告)日：2024-04-09

申请号：US17865180

申请日：2022-07-14

Applicant: T-MOBILE INNOVATIONS LLC

Inventor： Brett L. Christian ,  Michael Scott Probasco ,  George Frantz Cummings, III

IPC: H04B10/00 ,  G01S17/95 ,  H04B10/50 ,  H04B10/508

CPC classification number: H04B10/508 ,  G01S17/95 ,  H04B10/503

Abstract: Systems and methods are provided for improving signal propagation using lasers. A laser device is used to clear the air between a first fixed station, such as a base station, and a second fixed station, such as a fixed wireless access device. In the wake of the laser, particles in the air interface are cleared along a path that can then be used to communicate one or more sets of wireless signals. In the wake of the laser, the wireless signals experience less absorption, reflection, and refraction, reducing path loss, and increasing the overall effectiveness of the wireless system—particularly at or near the cell edge or when a meteorological condition exists between the fixed stations.

公开(公告)号：US11949498B2

公开(公告)日：2024-04-02

申请号：US17516879

申请日：2021-11-02

Applicant: Cisco Technology, Inc.

Inventor： Thomas Duthel ,  Helmut Preisach

IPC: H04B10/50 ,  G02F1/21 ,  H04B10/508 ,  H04J14/08

CPC classification number: H04J14/08 ,  G02F1/212 ,  H04B10/5053 ,  H04B10/508

Abstract: An optical modulator comprises, as optical modulator components, first and second transmitter chains and a first optical time division multiplex, OTDM, generator arranged to receive time interleaved optical pulses generated by one of said optical modulator components.

公开(公告)号：US11949455B2

公开(公告)日：2024-04-02

申请号：US17805445

申请日：2022-06-03

Applicant: Robert Kalman ,  Bardia Pezeshki ,  Alexander Tselikov

Inventor： Robert Kalman ,  Bardia Pezeshki ,  Alexander Tselikov

IPC: H04B10/50 ,  H04B10/25 ,  H04B10/508

CPC classification number: H04B10/502 ,  H04B10/25 ,  H04B10/508

Abstract: An optical communication system may include microLEDs for use in communicating data between chips or multi-chip modules. The number of microLEDs may be greater than a number of electrical data lines for carrying data to be communicated. Signals on the electrical data lines may be inverse multiplexed, for example to allow for operation of the microLEDs at a rate slower than operation of electrical circuitry generating signals on the electrical data lines.

公开(公告)号：US20240048242A1

公开(公告)日：2024-02-08

申请号：US18174766

申请日：2023-02-27

Applicant: Kabushiki Kaisha Toshiba

Inventor： Benjamin GRIFFITHS ,  Robert Ian WOODWARD ,  James F. DYNES ,  Andrew James SHIELDS

IPC: H04B10/50 ,  H04B10/508 ,  H04L9/08

CPC classification number: H04B10/503 ,  H04B10/508 ,  H04L9/0858

Abstract: An optical transmitter for a Quantum Key Distribution (QKD) system, the transmitter comprising: a multi-modal laser; a wavelength tuneable laser arranged to inject light into a cavity of the multi-modal laser, so as to cause the multi-modal laser to output light at a selected wavelength for use in generating pulses to be output by the transmitter; and a modulator for controlling a phase shift between successive pulses output from the transmitter.