公开(公告)号：US11621794B1

公开(公告)日：2023-04-04

申请号：US17590243

申请日：2022-02-01

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Chuandong Li

IPC分类号： H04B10/60 ,  H04J14/02 ,  H04B10/61 ,  H04B10/299 ,  H04B10/64

摘要： The disclosed systems and methods for processing a subcarrier-multiplexed signal comprising: i) mixing the subcarrier-multiplexed signal with a local oscillator (LO) signal; ii) extracting a respective subcarrier signal from the subcarrier-multiplexed signal; iii) sampling the respective subcarrier signal; iv) extracting timing recovery information from the respective subcarrier signal; and v) processing the respective sampled subcarrier signal to extract data from the respective sampled subcarrier signal.

公开(公告)号：US11621775B2

公开(公告)日：2023-04-04

申请号：US17024239

申请日：2020-09-17

申请人： VIAVI SOLUTIONS INC.

发明人： Georg Rudolph

IPC分类号： H04B10/07 ,  H04B10/079 ,  H04J14/06 ,  H04B10/60

摘要： An apparatus for mitigating polarization dependent loss (PDL) in an optical signal-to-noise ratio (OSNR) of a modulated optical signal is disclosed. The apparatus may comprise a spectrum analyzer to measure an optical power spectrum of a modulated optical signal. The apparatus may also comprise a measuring unit to select a first portion of the modulated optical signal and a second portion of the modulated optical signal, where each of the first and second portions of the modulated optical signals may include an independent noise distribution indicative of PDL, and measure a time-varying parameter of the first and second portions. The apparatus may also include a signal processor to PDL in an OSNR by transforming any elliptical polarization associated with the independent noise distribution into a ball polarization, determining a correlation between time-varying parameters of the first and second portions, and calculating a PDL mitigated OSNR.

公开(公告)号：US20230078673A1

公开(公告)日：2023-03-16

申请号：US17469150

申请日：2021-09-08

申请人： SUBCOM, LLC

发明人： Maxim A. Bolshtyansky

IPC分类号： H04B10/079 ,  H04B10/60

摘要： A monitoring system. The monitoring system may include an optical receiver configured to receive an optical signal, the receiver comprising a plurality of equalizers to partition the optical signal over a plurality of optical channels corresponding to a plurality of optical wavelengths. The monitoring system may also include an analysis component, coupled to the receiver, comprising logic, where the logic is configured to construct a plurality of sensor matrices, corresponding to the plurality of optical channels, based upon the optical signal, after reception at the receiver; determine, using the plurality of sensor matrices, a correlation between at least one pair of sensor matrices corresponding to at least one pair of optical channels of the plurality of optical channels; and determine a location of a perturbation, external to the transmission system, based upon the correlation.

公开(公告)号：US11579863B2

公开(公告)日：2023-02-14

申请号：US17075253

申请日：2020-10-20

申请人： SOLiD, INC.

发明人： Bum Soo Park ,  Chi Young Park ,  Gil Koog Kim

IPC分类号： G06F8/65 ,  H04B10/40 ,  H04B10/50 ,  H04B10/60

摘要： Provided is an optical transceiver including: a controller configured to output firmware update data for updating firmware of another optical transceiver connected to the optical transceiver through an optical cable; and a transmitter configured to generate an optical signal by superposing input payload data and the firmware update data, and to transmit the optical signal to the other optical transceiver. According to embodiments, the firmware of a remote optical transceiver at a remote location is automatically updated without affecting payload data, which is information to be transmitted.

公开(公告)号：US11561450B2

公开(公告)日：2023-01-24

申请号：US16466868

申请日：2017-12-06

申请人： LensVector Inc.

发明人： Tigran Galstian

IPC分类号： G02F1/29 ,  F21K9/233 ,  F21K9/65 ,  F21V14/00 ,  F21V23/04 ,  H04B10/11 ,  H04B10/50 ,  H04B10/60 ,  G02F1/133 ,  F21Y115/10

摘要： Liquid crystal (LC) beam modulation devices are applied to lighting control or to optical wireless communications to improve performance of lighting or communications. A flexible optical network using LC beam modulation and common control of beam intensity and solid angle of beams are also described.

公开(公告)号：US20230011498A1

公开(公告)日：2023-01-12

申请号：US17373533

申请日：2021-07-12

申请人： Apple Inc.

发明人： Dong Zheng ,  James M. Hollabaugh ,  Jihyun Cho ,  Narendra S. Mehta

IPC分类号： G01S17/04 ,  H04B10/516 ,  H04B10/60 ,  G01S7/4861

摘要： An electronic device may include a proximity sensor for detecting whether an external object is in the vicinity of the device. The proximity sensor may have a light detector and a light source that can be reused for data communications. The light detector may be coupled to optical receiver circuitry, whereas the light source may be coupled to optical transmitter circuitry. The optical transmitter circuitry may include encoding circuits configured to convert electrical signals to optical signals. The optical receiver circuitry may include decoding circuits configured to convert optical signals to electrical signals. The optical signals can be encoded and decoded using pulse width modulation schemes or amplitude modulation schemes.

公开(公告)号：US20230010592A1

公开(公告)日：2023-01-12

申请号：US17834036

申请日：2022-06-07

申请人： FUJITSU LIMITED

发明人： Ke ZHANG ,  Zhenning TAO

IPC分类号： H04B10/60 ,  H04B10/58

摘要： A distorter coefficient updating apparatus, a distorter coefficient updating method, and a digital predistortion apparatus. The distorter coefficient updating apparatus is configured at an optical receiver side, and comprises a processor configured to: perform re-distortion processing on a signal after decision according to a first distorter coefficient to generate a first reference signal; and calculate a second distorter coefficient according to the first reference signal and a signal before decision, or according to the first reference signal, the signal after decision, and the signal before decision The second distorter coefficient is fed back to the processor as the first distorter coefficient of the processor in a next update, and the second distorter coefficient is fed back to a predistorter on an optical transmitter side as a predistortion coefficient for the predistorter to perform a predistortion processing on a signal input to the predistorter.

公开(公告)号：US11502757B1

公开(公告)日：2022-11-15

申请号：US17386920

申请日：2021-07-28

申请人： QuantumZ Inc.

发明人： Chun-Chieh Chen ,  Ming-Che Hsieh ,  Po-Ting Chen ,  Chun-I Wu

IPC分类号： H04B10/67 ,  H04B10/50 ,  H04B10/43 ,  H04B10/40 ,  H04B10/60

摘要： A method of manufacturing a device with a optical component disposed thereon, including following steps of: preparing a substrate, the substrate including a signal guide and an electric conductive structure; and mounting an optical component on the substrate and corresponding a light transmission face of the optical component to the signal guide, wherein the optical component and the substrate is connected by an adhesive material and the optical component is electrically connected with the electric conductive structure. A transmission device being made by the method of manufacturing the device with the optical component disposed thereon as described above is further provided.

公开(公告)号：US11493688B2

公开(公告)日：2022-11-08

申请号：US16891259

申请日：2020-06-03

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Sae-Kyoung Kang ,  Jongtae Song ,  Joon Young Huh

IPC分类号： G02B6/12 ,  G02B6/293 ,  H04B10/40 ,  G02B6/287 ,  H04B10/27 ,  H04B10/60 ,  H04B10/25

摘要： An optical module includes an interface electrically connected to an external device to receive a data signal to be transmitted, a signal processor configured to perform serialization and signal modulation on the received data signal, an optical transceiver configured to generate an optical transmission signal by receiving a direct current (DC) light source, in which a plurality of light sources having different wavelengths are multiplexed, from an optical power supply and performing optical modulation thereon through the serialized and modulated data signal, and an optical fiber connector configured to output the generated optical transmission signal to the external device and receive an optical reception signal from the external device.

公开(公告)号：US20220329900A1

公开(公告)日：2022-10-13

申请号：US17853379

申请日：2022-06-29

申请人： WINGCOMM Co. Ltd.

发明人： Yun Bai ,  Wei Mao ,  Zuodong Wang ,  Jianming Yu

IPC分类号： H04N21/4363 ,  H04B10/50 ,  H04B10/60

摘要： Systems and methods for optical data interconnection are described. One aspect includes detecting a first HDMI connection of a first terminal of an optical connector. A second HDMI connection of a second terminal of the optical connector may be detected. One aspect includes determining that the first HDMI connection is associated with an HDMI source, and determining that the second HDMI connection is associated with an HDMI sink. Responsive to determining that the first HDMI connection is associated with the HDMI source, an HDMI transmission mode is selected for the first terminal. Responsive to determining that the second HDMI connection is associated with the HDMI sink, an HDMI reception mode is selected for the second terminal. The first terminal and the second terminal may perform HDMI optical communication via an optical communication channel.