公开(公告)号：US20220095435A1

公开(公告)日：2022-03-24

申请号：US17540699

申请日：2021-12-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Benbo XU ,  Yanbo LI ,  Zhen DONG

IPC: H05B47/105 ,  G02B27/10

Abstract: An optical source switching apparatus including first optical sources, an optical cross-connect device, second optical sources, and a first coupler. The optical cross-connect device is connected to the first optical sources and the first coupler, and the first coupler is connected to the second optical source; both the first optical source and the second optical source are configured to output continuous optical energy, and the optical cross-connect device is configured to enable optical energy output by at least one of the first optical sources to enter the first coupler when at least one of the second optical sources fails; and the first coupler is configured to implement beam splitting of the optical energy output by the first optical source or the second optical source.

公开(公告)号：US20230239067A1

公开(公告)日：2023-07-27

申请号：US18190733

申请日：2023-04-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guangcan MI ,  Xu SUN ,  Yanbo LI

IPC: H04J14/02 ,  H04B10/293

CPC classification number: H04J14/0221 ,  H04B10/293 ,  H04J14/0201

Abstract: Example optical signal processing apparatuses and methods are provided. One example apparatus includes: N light sources, a wavelength multiplexer, an optical processor, a dither application circuit, a first detection circuit, a second detection circuit, and a feedback control circuit. The light source generates a single-wavelength signal. The dither application circuit applies a dither signal to the light source. The wavelength multiplexer generates a multi-wavelength signal based on the single-wavelength signal. The first detection circuit is configured to obtain a first power signal of a signal input to the optical processor. The second detection circuit is configured to obtain a second power signal of a signal output from the optical processor. The feedback control circuit adjusts a working parameter of the optical processor based on the dither signal corresponding to the single-wavelength signal, the first power signal, and the second power signal.

公开(公告)号：US20190296850A1

公开(公告)日：2019-09-26

申请号：US16441658

申请日：2019-06-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqiang JI ,  Xin TU ,  Yanbo LI ,  Shengmeng FU

IPC: H04J14/02 ,  H04J14/06 ,  G02B6/293

Abstract: Examples of a polarization independent optical device are described. One example polarization independent optical device includes an input/output preprocessing optical path and M add/drop optical paths. Any add/drop optical path can be configured to drop a first QTE and a first PTE that meet a resonance condition of a microring included in the add/drop optical path such that each add/drop optical path can be configured to drop a desired optical signal. Any add/drop optical path can also be configured to transmit an input optical signal to the input/output preprocessing optical path. Therefore, when any of the M add/drop optical paths is configured to drop a desired optical signal, another add/drop optical path can be configured to add a desired optical signal.

公开(公告)号：US20230239982A1

公开(公告)日：2023-07-27

申请号：US18187817

申请日：2023-03-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Benbo XU ,  Yanbo LI ,  Zhen DONG

IPC: H05B47/105 ,  G02B27/10

CPC classification number: H05B47/105 ,  G02B27/108

Abstract: An optical source switching apparatus including first optical sources, an optical cross-connect device, second optical sources, and a first coupler. The optical cross-connect device is connected to the first optical sources and the first coupler, and the first coupler is connected to the second optical source; both the first optical source and the second optical source are configured to output continuous optical energy, and the optical cross-connect device is configured to enable optical energy output by at least one of the first optical sources to enter the first coupler when at least one of the second optical sources fails; and the first coupler is configured to implement beam splitting of the optical energy output by the first optical source or the second optical source.

公开(公告)号：US20200059314A1

公开(公告)日：2020-02-20

申请号：US16663521

申请日：2019-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqiang JI ,  Shengmeng FU ,  Yanbo LI ,  Lewei ZHANG ,  Li ZENG

IPC: H04J14/02 ,  H04B10/60 ,  H04B10/50 ,  G02B6/293

Abstract: A reconfigurable optical add/drop multiplexer includes N input ports, N output ports, M add ports and M drop ports. Each of the N input ports and each of the M add ports is respectively connected to one first polarizer. Each of the N output ports and each of the M drop ports is respectively connected to one second polarizer. A first end of the first polarizer is connected to a second end of the first polarizer, forming a loop including the first polarizer. A first end of the second polarizer is connected to a second end of the second polarizer, forming a loop including the second polarizer. An annular waveguide array is between a loop LIi and a loop LOj. A first polarizer included in the loop LIi is connected to an ith input port. A second polarizer included in the loop LOj is connected to a jth output port.

公开(公告)号：US20210273727A1

公开(公告)日：2021-09-02

申请号：US17325763

申请日：2021-05-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhen DONG ,  Yanbo LI ,  Xiaolu SONG

IPC: H04B10/516 ,  G02B6/27 ,  H04B10/25 ,  H04B10/61 ,  H04B10/50

Abstract: Example polarization processing optical devices, methods, and systems are disclosed. A polarization processing optical device includes a polarization beam splitter (PBS), a polarization rotator (PR), a coupler, and a phase tuner (PT), where one port of the PBS is configured to input a continuous light source, and the other two ports of the PBS are respectively connected to the PR and one port of the coupler, the PR is connected to another port of the coupler, the PT is disposed on a connection between the PBS and the coupler or a connection between the PR and the coupler, at least one port of the coupler is configured to output single-polarization light, and the PT is configured to control output optical power of the coupler.

公开(公告)号：US20200348543A1

公开(公告)日：2020-11-05

申请号：US16932515

申请日：2020-07-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sujie ZHOU ,  Long LUO ,  Ruiqiang JI ,  Yanbo LI ,  Mai WANG

IPC: G02F1/01

Abstract: A wavelength calibration method, apparatus, and system is disclosed. The method includes: selecting sonic wavelengths from a plurality of wavelengths, and performing the following operations on a microring filter for each of the some wavelengths, to obtain sets of calibrated voltages of the some wavelengths: (1) adjusting thermal tuning power of multiple microrings by using one set of voltages, and obtaining multiple sets of voltages that enable monitored optical power to have an extreme value, and (2) using the multiple of sets of voltages as a reference, adjusting the thermal tuning power of the multiple microrings by using another set of voltages, and determining one of the sets of calibrated voltages, which enables the monitored optical power to converge, from the multiple sets of voltages; and then, obtaining, through calculation based on the sets of calibrated voltages of the some wavelengths, sets of calibrated voltages of other wavelengths.

公开(公告)号：US20200274631A1

公开(公告)日：2020-08-27

申请号：US15931714

申请日：2020-05-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Andrea MELLONI ,  Francesco MORICHETTI ,  Ruiqiang JI ,  Douglas AGUIAR ,  Maziyar MILANIZADEH ,  Sujie ZHOU ,  Yanbo LI ,  Long LUO ,  Li ZENG

IPC: H04J14/02 ,  H04B10/50 ,  H04B10/25

Abstract: An ADD/DROP filter and an optical add/drop multiplexer are disclosed. An ADD/DROP filter includes an input port, an output port, an add port connecting to a modulator, and a drop port. The modulator is configured to load a pilot signal to a first optical signal to obtain a second optical signal, and transmit the second optical signal to the add port. A third optical signal is input to the input port. A wavelength difference between the second optical signal and the third optical signal is an integral multiple of a free spectral range. A power detector is connected to the output port and/or the drop port. The power detector is configured to obtain an output optical signal from the output port or the drop port and detect an optical power of the output optical signal.

公开(公告)号：US20170195058A1

公开(公告)日：2017-07-06

申请号：US15461263

申请日：2017-03-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin WANG ,  Lei GAO ,  Yanbo LI

IPC: H04B10/516 ,  H04B10/50 ,  H04B10/58

CPC classification number: H04B10/516 ,  H01S5/0071 ,  H01S5/0085 ,  H01S5/0265 ,  H01S5/1007 ,  H04B10/503 ,  H04B10/505 ,  H04B10/58

Abstract: Embodiments of the present invention provide an optical signal modulation apparatus and system. The optical signal modulation apparatus includes: a laser, where each of at least one first output end and at least one second output end of the laser is connected to an electro-absorption modulator (EAM); the laser is configured to generate at least two optical signals, where at least one of the optical signals is sent to at least one EAM by using the at least one first output end, and at least one of the optical signals is sent to at least one EAM by using the at least one second output end; and each EAM is configured to modulate a received electrical signal onto the received optical signal for outputting. The apparatus has a simple structure, and less complex production.