公开(公告)号：US09531470B2

公开(公告)日：2016-12-27

申请号：US14521956

申请日：2014-10-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Enbo Zhou ,  Sen Zhang

IPC: H04B10/00 ,  H04B10/079 ,  H04J14/02 ,  H04B10/077 ,  H04J14/00

CPC classification number: H04B10/0795 ,  H04B10/0775 ,  H04J14/02 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0256 ,  H04J14/0271

Abstract: Embodiments of the present invention relate to the field of network communications and specifically discloses a method for monitoring optical performance of a wavelength channel, including: receiving, by a first node, an optical signal over an operating wavelength and obtaining, by the first node, optical performance of the unestablished wavelength channel by monitoring the optical signal at a receiving end. Embodiments of the present invention further disclose a system and a node device for monitoring optical performance of a wavelength channel.

Abstract translation: 本发明的实施例涉及网络通信领域，具体公开了一种用于监视波长信道的光学性能的方法，包括：由第一节点在工作波长上接收光信号，并由第一节点获得， 通过监视接收端的光信号，建立未建立的波长信道的光学性能。 本发明的实施例还公开了一种用于监视波长信道的光学性能的系统和节点设备。

公开(公告)号：US20220190928A1

公开(公告)日：2022-06-16

申请号：US17683531

申请日：2022-03-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Enbo Zhou ,  Fang Jiang

IPC: H04B10/572 ,  H04B10/294 ,  H04B10/50

Abstract: A wavelength tuning method and a related device, the method including receiving, by a remote optical module, a wavelength control signal from a central office terminal, where the wavelength control signal indicates a target wavelength tuned by the remote optical module, and where the wavelength control signal is loaded into a first optical service signal in a pilot tone manner, and tuning, by the remote optical module, an operating wavelength of the remote optical module based on the wavelength control signal

公开(公告)号：US10608742B2

公开(公告)日：2020-03-31

申请号：US16287920

申请日：2019-02-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tianjian Zuo ,  Liang Zhang ,  Enbo Zhou

IPC: H04B10/04 ,  H04B10/25 ,  H04L27/26 ,  H04B10/54 ,  H04B10/524

Abstract: Embodiments of the present disclosure disclose a signal modulation and demodulation method and system, and an apparatus, to eliminate SSBI generated in a modulation and demodulation method. The method includes: performing, by a transmit end, PAM encoding on an input signal to obtain a PAM signal; electrically modulating, by the transmit end, the PAM signal by using a first filter; converting, by the transmit end, the electrically modulated PAM signal into an analog signal; optically modulating, by the transmit end, the analog signal by using an electro-optic modulator to obtain an optical signal, and sending the optical signal. Another method includes receiving, by a receive end, the optical signal, and converting the optical signal into an electrical signal; electrically demodulating, by the receive end, the electrical signal by using a second filter; and performing PAM decoding, by the receive end, the electrically demodulated electrical signal to obtain a restored input signal.

公开(公告)号：US10389462B2

公开(公告)日：2019-08-20

申请号：US15722369

申请日：2017-10-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Liang Zhang ,  Tianjian Zuo ,  Enbo Zhou

IPC: H04J1/02 ,  H04B10/556 ,  H04L27/04 ,  H04L27/20

Abstract: The present invention discloses a digital signal processor, including: a signal generation unit, configured to generate a first digital signal and a second digital signal; a first modulation unit, configured to modulate the first digital signal to obtain a third digital signal; a second modulation unit, configured to modulate the second digital signal to obtain a fourth digital signal; a first phase shifting unit, configured to perform phase shifting on the third digital signal, to output the third digital signal and a fifth digital signal; a second phase shifting unit, configured to perform phase shifting on the fourth digital signal, to output the fourth digital signal and a sixth digital signal; an adder, configured to calculate a sum of the third digital signal and the fourth digital signal, to obtain a seventh digital signal; and a subtractor, configured to subtract the sixth digital signal from the fifth digital signal.

公开(公告)号：US20190199439A1

公开(公告)日：2019-06-27

申请号：US16287920

申请日：2019-02-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tianjian Zuo ,  Liang Zhang ,  Enbo Zhou

IPC: H04B10/25 ,  H04B10/524

CPC classification number: H04B10/2503 ,  H04B10/524 ,  H04L27/26

Abstract: Embodiments of the present disclosure disclose a signal modulation and demodulation method and system, and an apparatus, to eliminate SSBI generated in a modulation and demodulation method. The method includes: performing, by a transmit end, PAM encoding on an input signal to obtain a PAM signal; electrically modulating, by the transmit end, the PAM signal by using a first filter; converting, by the transmit end, the electrically modulated PAM signal into an analog signal; optically modulating, by the transmit end, the analog signal by using an electro-optic modulator to obtain an optical signal, and sending the optical signal. Another method includes receiving, by a receive end, the optical signal, and converting the optical signal into an electrical signal; electrically demodulating, by the receive end, the electrical signal by using a second filter; and performing PAM decoding, by the receive end, the electrically demodulated electrical signal to obtain a restored input signal.

公开(公告)号：US10135525B2

公开(公告)日：2018-11-20

申请号：US15196381

申请日：2016-06-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yansui Huang ,  Enbo Zhou

IPC: H04B10/079 ,  H04J14/02 ,  H04B10/077 ,  H04B10/291

Abstract: The present invention provides a fiber-cut detection method, apparatus, and system. When a fiber cut occurs, power of input signal light decreases quickly at a fiber-cut location. When the fiber-cut location is relatively far away from an amplifier, pump light consumption of the input signal light in the remaining fiber reduces due to reduction of the input signal light, which causes an increase of remaining pump optical power in the fiber and an increase of an actual gain value of the amplifier. A gain-locking function of the amplifier works, which decreases pump power of the pump light and maintains a gain of the amplifier unchanged basically. Output optical power of the amplifier decreases quickly with decrease of input optical power, and when power of an output optical signal decreases to power that is lower than preset power of the output optical signal, it is determined that a fiber cut occurs.

公开(公告)号：US09525481B2

公开(公告)日：2016-12-20

申请号：US14580989

申请日：2014-12-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sen Zhang ,  Enbo Zhou ,  Yabin Ye

IPC: H04B10/08 ,  H04B17/00 ,  H04B10/079 ,  H04B10/2543 ,  H04B10/00

CPC classification number: H04B10/0791 ,  H04B10/00 ,  H04B10/079 ,  H04B10/0795 ,  H04B10/07953 ,  H04B10/2543 ,  H04B17/00

Abstract: The present invention relates to the field of network communications and discloses a method for calculating a nonlinear transmission impairment, including: determining that no pump channel exists in an optical fiber link, obtaining a factor of intra-band nonlinear noise that does not pass through an optical filter, and obtaining integral power in signal light bandwidth of a span; correcting the factor of intra-band nonlinear noise that does not pass through an optical filter, to obtain a factor of intra-band nonlinear noise of the span that passes through an optical filter; calculating nonlinear noise of the span; and obtaining total nonlinear noise of the optical fiber link according to the nonlinear noise of the span, and obtaining a nonlinear transmission impairment of the optical fiber link. Embodiments of the present invention further provide an apparatus for calculating a nonlinear transmission impairment of an optical fiber link.

Abstract translation: 本发明涉及网络通信领域，并公开了一种用于计算非线性传输损伤的方法，包括：确定在光纤链路中不存在泵浦信道，获得不通过光纤链路的带内非线性噪声因子 在滤波器的信号光带宽中获得积分功率; 校正不通过滤光器的带内非线性噪声因子，以获得通过滤光器的跨度的带内非线性噪声因子; 计算跨度的非线性噪声; 并根据跨度的非线性噪声获得光纤链路的总非线性噪声，并获得光纤链路的非线性传输损伤。 本发明的实施例还提供了一种用于计算光纤链路的非线性传输损伤的装置。

公开(公告)号：US20150117853A1

公开(公告)日：2015-04-30

申请号：US14580989

申请日：2014-12-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sen ZHANG ,  Enbo Zhou ,  Yabin Ye

IPC: H04B10/079

CPC classification number: H04B10/0791 ,  H04B10/00 ,  H04B10/079 ,  H04B10/0795 ,  H04B10/07953 ,  H04B10/2543 ,  H04B17/00

Abstract: The present invention relates to the field of network communications and discloses a method for calculating a nonlinear transmission impairment, including: determining that no pump channel exists in an optical fiber link, obtaining a factor of intra-band nonlinear noise that does not pass through an optical filter, and obtaining integral power in signal light bandwidth of a span; correcting the factor of intra-band nonlinear noise that does not pass through an optical filter, to obtain a factor of intra-band nonlinear noise of the span that passes through an optical filter; calculating nonlinear noise of the span; and obtaining total nonlinear noise of the optical fiber link according to the nonlinear noise of the span, and obtaining a nonlinear transmission impairment of the optical fiber link. Embodiments of the present invention further provide an apparatus for calculating a nonlinear transmission impairment of an optical fiber link.

Abstract translation: 本发明涉及网络通信领域，并公开了一种用于计算非线性传输损伤的方法，包括：确定在光纤链路中不存在泵浦信道，获得不通过光纤链路的带内非线性噪声因子 在滤波器的信号光带宽中获得积分功率; 校正不通过滤光器的带内非线性噪声因子，以获得通过滤光器的跨度的带内非线性噪声因子; 计算跨度的非线性噪声; 并根据跨度的非线性噪声获得光纤链路的总非线性噪声，并获得光纤链路的非线性传输损伤。 本发明的实施例还提供了一种用于计算光纤链路的非线性传输损伤的装置。

公开(公告)号：US11916599B2

公开(公告)日：2024-02-27

申请号：US17683531

申请日：2022-03-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Enbo Zhou ,  Fang Jiang

IPC: H04J14/02 ,  H04B10/572 ,  H04B10/294 ,  H04B10/50 ,  H04B10/077

CPC classification number: H04B10/572 ,  H04B10/294 ,  H04B10/506 ,  H04B10/077 ,  H04J14/02 ,  H04J14/0276

Abstract: A wavelength tuning method and a related device, the method including receiving, by a remote optical module, a wavelength control signal from a central office terminal, where the wavelength control signal indicates a target wavelength tuned by the remote optical module, and where the wavelength control signal is loaded into a first optical service signal in a pilot tone manner, and tuning, by the remote optical module, an operating wavelength of the remote optical module based on the wavelength control signal.

公开(公告)号：US10944475B2

公开(公告)日：2021-03-09

申请号：US16510418

申请日：2019-07-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Liang Zhang ,  Qiang Zhang ,  Enbo Zhou

IPC: H04B10/04 ,  H04B10/2525 ,  G02F1/21 ,  H04L27/26

Abstract: This application relates to the communications field, and discloses a signal transmitting method and apparatus, a transmitter, and a signal transmission system. An example method includes: generating a real-number-type signal; performing phase rotation processing on the real-number-type signal to obtain a complex-number-type signal, where a value of a real part signal of the complex-number-type signal is equal to a value of an imaginary part signal of the complex-number-type signal; and transmitting the complex-number-type signal to a receiver.