公开(公告)号：US20230127342A1

公开(公告)日：2023-04-27

申请号：US17510369

申请日：2021-10-25

申请人： City University of Hong Kong

发明人： Martin GARAJ ,  Shu Hung Henry CHUNG

IPC分类号： H04Q11/00 ,  H04B10/524 ,  H04B10/69 ,  H04B10/11

摘要： The present invention provides an apparatus for facilitating a photovoltaic device to provide a wireless communication channel. The apparatus comprises a switch connected in parallel with the photovoltaic device and configured for driving the photovoltaic device to produce optical signals carrying sensed data to be transmitted; and a control module connected with the switch and configured for receiving electrical sensing signals and generate a control signal to control the switch. The apparatus provided by the present invention is extremely durable. Compared to existing communication technologies which require extra hardware, the apparatus provided by the present invention is simpler and can be integrated into a single component.

公开(公告)号：US11630799B2

公开(公告)日：2023-04-18

申请号：US17751212

申请日：2022-05-23

申请人： Marvell Asia Pte Ltd.

发明人： Radhakrishnan L. Nagarajan ,  Chao Xu

IPC分类号： G06F15/78 ,  G06F13/42 ,  G02B6/12 ,  H04B10/80 ,  H04B10/40 ,  H04B10/69 ,  H04L27/00 ,  G06F13/364 ,  G06F13/40 ,  H04L1/00 ,  H04L25/03 ,  H04L5/14 ,  H04L27/02 ,  H04L27/18 ,  H04L27/34

摘要： A hybrid electrical and optic system-on-chip (SOC) device configured for both electrical and optic communication includes a substrate, an electrical device configured for electrical communication arranged on the substrate, a photonics device configured for optic communication arranged on the substrate, and a self-test module arranged on the substrate. The self-test module is configured to receive a loop-back signal indicative of an optical signal output from the photonics device and calibrate the photonics device based on the loop-back signal.

公开(公告)号：US11614804B2

公开(公告)日：2023-03-28

申请号：US17147959

申请日：2021-01-13

申请人： Samsung Electronics Co., Ltd.

发明人： Oleksandr Sapozhnik ,  Iegor Vdovychenko ,  Andrii Bugaiov

IPC分类号： G06F3/01 ,  H04B10/90 ,  H04B10/69 ,  H04B10/50 ,  H04B1/709 ,  G01R33/02 ,  G01R33/24

摘要： An electronic device is provided. The electronic device includes a memory and at least one processor functionally connected with the memory, wherein the at least one processor may be configured to generate a first signal by modulating a phase of a default signal using a first code corresponding to a first magnetic field generator connected with the electronic device, control the first magnetic field generator connected with the electronic device to radiate a magnetic field corresponding to the first signal, receive a signal from at least one sensor connected with the electronic device, identify a second signal corresponding to the first signal from the signal, using the first code, and determine at least one of a position or a direction of the at least one sensor based on the second signal.

公开(公告)号：US11609116B2

公开(公告)日：2023-03-21

申请号：US17446142

申请日：2021-08-26

申请人： Banner Engineering Corp.

发明人： Ashley Wise ,  Tim Dirks

IPC分类号： G01J1/44 ,  G01S7/489 ,  H04B10/69

摘要： Apparatus and associated methods relate to an open-loop control circuit (OLCC) configured to determine a photodiode element (PDE) drive voltage as a function of a commanded photodiode gain level and a measured temperature signal. In an illustrative example the OLCC may receive a current temperature of an APD element. The OLCC may, for example, receive a commanded gain for the APD relative to a predetermined reference gain. The OLCC may, for example, retrieve a predetermined efficiency characteristic (PEC) of the APD based on the current temperature. If the temperature corresponds to a substantially non-linear portion of the PEC, the OLCC may, for example, determine the drive voltage as a function of the temperature and the commanded gain based on the PEC. Various embodiments may advantageously provide direct control of output gain of photodiodes over a wide dynamic range of temperature associated with the photodiode.

公开(公告)号：US20230061657A1

公开(公告)日：2023-03-02

申请号：US17561858

申请日：2021-12-24

申请人： Infinera Corporation

发明人： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

IPC分类号： H04B7/26 ,  H04B10/50 ,  H04B10/548 ,  H04B10/61 ,  H04B10/69 ,  H04J14/02 ,  H04L1/00 ,  H04L5/00 ,  H04J14/08 ,  H04J14/00 ,  H04B10/077 ,  H04B10/079 ,  H04B10/25 ,  H04B10/40 ,  H04Q11/00 ,  H04B10/2575 ,  H04J99/00

摘要： A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.

公开(公告)号：US20230054279A1

公开(公告)日：2023-02-23

申请号：US17974325

申请日：2022-10-26

申请人： W&WSens Devices, Inc.

发明人： Shih-Yuan WANG ,  Shih-Ping Wang

IPC分类号： H01L31/0236 ,  H01L31/0352 ,  H01L31/18 ,  H01L27/144 ,  H04B10/69 ,  H01L31/02 ,  H01L31/0232 ,  H01L31/09 ,  H01L31/103 ,  H01L31/028 ,  H01L31/107 ,  H04B10/25 ,  H04B10/40 ,  H04B10/80 ,  G02B1/00 ,  G02B6/42 ,  H01L27/146 ,  H01L31/077 ,  H01L31/036 ,  H01L31/075 ,  H01L31/105

摘要： Microstructures of micro and/or nano holes on one or more surfaces enhance photodetector optical sensitivity. Arrangements such as a CMOS Image Sensor (CIS) as an imaging LIDAR using a high speed photodetector array wafer of Si, Ge, a Ge alloy on SI and/or Si on Ge on Si, and a wafer of CMOS Logic Processor (CLP) ib Si fi signal amplification, processing and/or transmission can be stacked for electrical interaction. The wafers can be fabricated separately and then stacked or can be regions of the same monolithic chip. The image can be a time-of-flight image. Bayer arrays can be enhanced with microstructure holes. Pixels can be photodiodes, avalanche photodiodes, single photon avalanche photodiodes and phototransistors on the same array and can be Ge or Si pixels. The array can be of high speed photodetectors with data rates of 56 Gigabits per second, Gbps, or more per photodetector.

公开(公告)号：US20230022416A1

公开(公告)日：2023-01-26

申请号：US17881818

申请日：2022-08-05

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Wei SU ,  Qiuyou WU ,  Huaping QING

IPC分类号： H04B10/27 ,  H04B10/69 ,  H04J3/16 ,  H04L1/00

摘要： This application provides a data transmission method and apparatus. The method includes: processing, by a network device, a to-be-sent optical data unit ODU to obtain another ODU, where a bit rate of the another ODU is lower than a bit rate of the ODU; and sending, by the network device, the another ODU. In embodiments of this application, the ODU is processed to obtain the another ODU with a lower bit rate, and this helps reduce a rate increase when service data is transmitted in an OTN, so as to reduce an OTN interface rate and OTN costs.

公开(公告)号：US11552600B2

公开(公告)日：2023-01-10

申请号：US16553950

申请日：2019-08-28

申请人： Cisco Technology, Inc.

发明人： Alexander C. Kurylak ,  Kadaba Lakshmikumar

IPC分类号： H03F3/08 ,  H04B10/69

摘要： In one embodiment, stable and controlled circuit element biasing is provided in a circuit comprising a voltage source operable to output a first voltage, a reference voltage source operable to output a reference voltage, a circuit element biased, during operation, by the first voltage at a first end and by a second voltage at a second end, a voltage controller coupled to the second end of the circuit element, wherein the voltage controller is operable to adjust the second voltage based on a gain output, a gain controller operable to receive the reference voltage as a first input and the second voltage as a second input, wherein the gain controller is operable to generate, at an output of the gain controller, the gain output based on the second voltage and the reference voltage, and a feedback loop that extends from the output of the gain controller, through the voltage controller, and to the second input.

公开(公告)号：US11539447B2

公开(公告)日：2022-12-27

申请号：US16254552

申请日：2019-01-22

申请人： Infinera Corporation

发明人： Ahmed Awadalla

IPC分类号： H04J4/00 ,  H04B10/69 ,  H03H17/06

摘要： Consistent with the present disclosure, the above-described subcarrier noise, which may be characterized as a linear filtering effect, may be reduced or eliminated by providing a first multiple-input multiple output (MIMO) circuits at the transmit end of an optical link and providing a second MIMO circuit at the receive end of the optical link. The first MIMO may include a first plurality of filters, each of which may include a finite-impulse response (FIR) filter having variable coefficients or tap weights that may be changed or adapted to minimize subcarrier noise associated with the modulator, as well as D/A and analog circuitry, at the transmit end of the optical link. In addition, the second MIMO may include a second plurality of filters, each of which may also include an FIR filter having variable coefficients or tap weights that may be changed or adapted to minimized subcarrier noise associated with the optical hybrids, as well as A/D and analog circuitry, at the receive end of the optical link. In one example, a least means square (LMS) technique may be employed to calculate desired coefficients or tap weights whereby an error determined based on the signal detected at the receiver is minimized to update the coefficients of the FIR filters.

公开(公告)号：US11502754B2

公开(公告)日：2022-11-15

申请号：US17199084

申请日：2021-03-11

申请人： Huawei Technologies Co., Ltd.

发明人： Fabio Pittala ,  Maxim Kuschnerov

IPC分类号： H04B10/00 ,  H04B10/2507 ,  H04B7/0413 ,  H04B10/61 ,  H04B10/69

摘要： The invention presents an equalizing device, a corresponding method and an optical signal with a frame structure for enabling the method. The equalizing device includes a first 2×2 MIMO equalizer configured to perform a first equalization on the digital signal, supported by a 2×2 MIMO channel estimation of the channel based on the digital signal. Further, the device includes a second 2×2 MIMO equalizer, arranged after the first equalizer and configured to perform a second equalization on the digital signal, supported by a State of Polarization (SOP) estimation of the optical signal based on the digital signal.