公开(公告)号：US11686616B2

公开(公告)日：2023-06-27

申请号：US17671636

申请日：2022-02-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wenye Liang ,  Yuping Wu ,  Zhengjun Wei

IPC: G01J1/44 ,  G01J1/46

CPC classification number: G01J1/46 ,  G01J2001/442

Abstract: This application provides a single-photon detection apparatus that includes a phase-reversed reflection branch, a single-photon sensing device, a phase-unreversed reflection branch. An input signal is divided into a first and a second input signals, and the two input signals respectively arrive at the phase-reversed reflection branch and the single-photon sensing device. The phase-reversed reflection branch is configured to perform phase-reversed reflection processing on the first input signal, to obtain a phase-reversed signal. The single-photon sensing device is configured to send the second input signal to the phase-unreversed reflection branch, and is further configured to sense a photon, generate photon information, and output a first branch signal. The phase-unreversed reflection branch is configured to perform phase-unreversed reflection processing on the second input signal to obtain a second branch signal. The first branch signal is superimposed with the second branch signal, to obtain the photon information.

公开(公告)号：US11327233B2

公开(公告)日：2022-05-10

申请号：US16364512

申请日：2019-03-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenye Liang ,  Changzheng Su ,  Xinhua Xiao ,  Zhifang Fang

IPC: G02B6/27 ,  G02F1/09 ,  H04L9/08 ,  H04B10/70

Abstract: The present invention discloses an encoding apparatus, including: a polarization splitter-rotator PSR, a polarization rotation structure, and a modulator, where the PSR is configured to receive an input signal light, split the input signal light into two parts whose polarization modes are the same, and send the two parts to the polarization rotation structure and the modulator respectively; the polarization rotation structure has functions of rotating, by 180 degrees, a polarization direction of an optical signal entering the polarization rotation structure from one end, and keeping a polarization direction of an optical signal entering the polarization rotation structure from the other end unchanged; the modulator is configured to modulate a light input to the modulator; and the PSR is further configured to receive signal lights sent by the polarization rotation structure and the modulator, combine the two signal lights to send the output signal light.

公开(公告)号：US20190222416A1

公开(公告)日：2019-07-18

申请号：US16364512

申请日：2019-03-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenye Liang ,  Changzheng Su ,  Xinhua Xiao ,  Zhifang Fang

IPC: H04L9/08 ,  G02F1/09 ,  G02B6/27

CPC classification number: H04L9/0858 ,  G02B6/2746 ,  G02F1/093 ,  H04B10/70 ,  H04L9/08

Abstract: The present invention discloses an encoding apparatus, including: a polarization splitter-rotator PSR, a polarization rotation structure, and a modulator, where the PSR is configured to receive an input signal light, split the input signal light into two parts whose polarization modes are the same, and send the two parts to the polarization rotation structure and the modulator respectively; the polarization rotation structure has functions of rotating, by 180 degrees, a polarization direction of an optical signal entering the polarization rotation structure from one end, and keeping a polarization direction of an optical signal entering the polarization rotation structure from the other end unchanged; the modulator is configured to modulate a light input to the modulator; and the PSR is further configured to receive signal lights sent by the polarization rotation structure and the modulator, combine the two signal lights to send the output signal light.