公开(公告)号：US12197008B2

公开(公告)日：2025-01-14

申请号：US17854585

申请日：2022-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiang Guo ,  Rui Zhou ,  Zhiqun Yang ,  Lin Zhang

IPC: G02B6/14 ,  H04J14/04

Abstract: A communication system is provided. The communication system may include few mode fibers of at least two spans and a mode converter. The few mode fiber is configured to transmit M received mode groups, where group delays of the M mode groups during transmission in the few mode fiber are symmetrically distributed about a center. The mode converter is configured to: receive the M mode groups from the few mode fiber, perform mode group exchange between a first mode group and a second mode group in the M mode groups to obtain M exchanged mode groups, where a group delay of the first mode group and a group delay of the second mode group are symmetric about the center.

公开(公告)号：US11747565B2

公开(公告)日：2023-09-05

申请号：US17863100

申请日：2022-07-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Juhao Li ,  Jinglong Zhu ,  Yongqi He ,  Shengling Wu ,  Qiang Guo ,  Ruishan Chen ,  Rui Zhou

IPC: G02B6/293 ,  G02B6/02

CPC classification number: G02B6/29319 ,  G02B6/02123 ,  G02B6/02295

Abstract: An optical fiber filter includes a fiber core, inner cladding, and outer cladding. A refractive index of the fiber core, a refractive index of the inner cladding, and a refractive index of the outer cladding progressively decrease in sequence. The fiber core is configured to transmit at least two mutually different first optical signal modes, the inner cladding is configured to transmit at least two mutually different second optical signal modes, and at least one fiber grating is etched on the fiber core. At least part of optical power of a target first optical signal mode is coupled to only a target second optical signal mode at the fiber grating. The target first optical signal mode is one of the at least two first optical signal modes, and the target second optical signal mode is one of the at least two second optical signal modes.

公开(公告)号：US20240077382A1

公开(公告)日：2024-03-07

申请号：US18506628

申请日：2023-11-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Guo ,  Rui Zhou ,  Zhiqun Yang

IPC: G01M11/00

CPC classification number: G01M11/3127 ,  G01M11/319

Abstract: An optical fiber measurement system includes an optical time-domain reflectometer, a wavelength division multiplexer, and a signal generator. The signal generator sends a signal light ray to the wavelength division multiplexer. The optical time-domain reflectometer sends two measurement light rays whose wavelengths are respectively longer than and shorter than a wavelength of the signal light ray to the wavelength division multiplexer. The wavelength division multiplexer combines the two measurement light rays and the signal light ray, sends a combined light ray to an optical fiber, and sends a light ray returned by the optical fiber to the optical time-domain reflectometer, so that the optical time-domain reflectometer determines performance of the optical fiber based on the returned light ray.

公开(公告)号：US20240056210A1

公开(公告)日：2024-02-15

申请号：US18493273

申请日：2023-10-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Guo ,  Rui Zhou ,  Xiaofan Ji ,  Lin Zhang

IPC: H04J14/02 ,  H04B10/079 ,  H04J14/04

CPC classification number: H04J14/02216 ,  H04B10/07955 ,  H04J14/04

Abstract: An optical signal amplification apparatus includes a power detection module, a pump control module, and a Raman amplification module. The power detection module is configured to detect power of each of a plurality of G wavelength channels in each of a plurality of N spatial dimensions, and send power configuration information to the pump control module. The pump control module is configured to output N channels of pump light, where each channel of pump light includes M pieces of split pump light of different wavelengths, and a proportion of each piece of split pump light in pump light of a corresponding wavelength is determined based on the power configuration information. The Raman amplification module is configured to perform Raman amplification on a space division multiplexed signal in all of the N spatial dimensions by using the N channels of pump light.

公开(公告)号：US20240264385A1

公开(公告)日：2024-08-08

申请号：US18595059

申请日：2024-03-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  Jinan University

Inventor： Wei Ding ,  Zhe Zhang ,  Yingying Wang ,  Rui Zhou ,  Zhaoyang Tong

IPC: G02B6/38

CPC classification number: G02B6/3825 ,  G02B6/3869 ,  G02B6/3897

Abstract: A fiber connecting apparatus and a fiber ferrule preparation method are provided. The connecting apparatus includes a first fiber connector, a second fiber connector, and a pair of adapters. The first fiber connector includes a first fiber ferrule having a central axis through-hole structure, and a first fiber is capable of passing through the first fiber ferrule. The second fiber connector includes a second fiber ferrule having a central axis through-hole structure, and a second fiber is capable of passing through the second fiber ferrule. Two adapters in the pair of adapters are configured to implement docking between the first fiber and the second fiber inside the pair of adapters. Ahead of the first fiber ferrule includes a first fiber limiting structure; and/or a head of the second fiber ferrule includes a second fiber limiting structure.