公开(公告)号：US20220069934A1

公开(公告)日：2022-03-03

申请号：US17521984

申请日：2021-11-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhiping JIANG ,  Jun LUO ,  Haitao SUN

IPC: H04J14/02 ,  H04B10/071

Abstract: The disclosed systems, structures, and methods are directed to an optical transceiver, employing a first optical time domain reflectometer (OTDR) module configured to generate a first OTDR signal, and a second OTDR signal, the second OTDR signal being a delayed version of the first OTDR signal, a first optical supervisory channel (OSC) transmitter configured to generate a first OSC signal, and a second OSC signal, the second OSC signal being a delayed version of the first OSC signal, a first wavelength division multiplexer (WDM) configured to transmit the first OSC signal interleaved with the first OTDR signal on a first optical fiber and a second WDM configured to transmit the second OSC signal interleaved with the second OTDR signal on a second optical fiber.

公开(公告)号：US20210021340A1

公开(公告)日：2021-01-21

申请号：US16927245

申请日：2020-07-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhiping JIANG ,  Xuefeng TANG ,  Haitao SUN

IPC: H04B10/079 ,  H04B10/50 ,  H04J14/02

Abstract: The disclosed systems, apparatuses and methods are directed to controlling a difference between a first center frequency of a first optical subcarrier and a second center frequency of a second optical subcarrier of an optical super-channel signal in an optical network. The method comprises modulating the first optical subcarrier at a first optical side component frequency with a first side modulation frequency and modulating the second optical subcarrier at a second optical side component frequency with a second side modulation frequency. The method further comprises detecting a radio-frequency (RF) power at a modulated beat frequency tone in the modified optical signal.

公开(公告)号：US20240361437A1

公开(公告)日：2024-10-31

申请号：US18768697

申请日：2024-07-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  POLITECNICO DI MILANO

Inventor： Alfonso INCORONATO ,  Klaus PASQUINELLI ,  Mauro LOCATELLI ,  Franco ZAPPA ,  Ali Ahmed Ali MASSOUD ,  Haitao SUN ,  Hongbiao GAO ,  Li ZENG

IPC: G01S7/487 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/10

CPC classification number: G01S7/487 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/10

Abstract: There is provided a method and device for time-of-flight (TOF) ranging. The method includes generating, by each photon detector in a photon detector array, a quantized current pulse each time a predefined number of photons is detected. The method further includes summing, by a current adder, the quantized current pulses from all photon detectors to create an analog signal pulse. The method further includes providing, by a peak detector, a digital pulse for each instance where an intensity of the analog signal pulse is greater than signal peaks already measured after the last emitted pulsed laser shot. The method further includes measuring and recording, by a time-to-digital converter (TDC), a TOF each time the digital pulse is provided. The method further includes providing, by a TOF output, a single TDC result indicative of a TOF associated with the analog signal pulse having a highest intensity. The device includes a photon detector, current adder, analog peak detector and a time-of-flight digital converter, wherein each component is configured to perform the respective aspect of the method.

公开(公告)号：US20220003846A1

公开(公告)日：2022-01-06

申请号：US16921174

申请日：2020-07-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ali Ahmed Ali MASSOUD ,  Zhiping JIANG ,  Haitao SUN

IPC: G01S7/481 ,  G01S17/10 ,  G01S7/486 ,  G01S17/931

Abstract: The disclosed systems, structures, and methods are directed to a LiDAR system comprising a radiation source configured to emit light pulses towards a region of interest (ROI), a detector configured to detect light pulses reflected from the ROI, a processor, communicatively coupled to the radiation source and the detector, configured to cause the radiation source to emit a preamble light pulse having an energy EP and a pulse width W1 towards the ROI, determine, if the preamble light pulse is detected by the detector and whether there is an object in the ROI, responsive to a determination that there is an object in the ROI, cause the radiation source to emit a scanning light pulse having an energy EL and a pulse width W2 towards the ROI, else the radiation source to emit a scanning light pulse having an energy EH and the pulse width W2 towards the ROI.