公开(公告)号：US20230370754A1

公开(公告)日：2023-11-16

申请号：US18359047

申请日：2023-07-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shaowu WANG ,  Chee Wei LEE ,  Stevanus DARMAWAN ,  Yongping LIAO ,  Jinlin ZENG ,  Qian WANG ,  Ruiqiang JI ,  Jian JIAN

IPC: H04Q11/00 ,  H04J14/02

CPC classification number: H04Q11/0067 ,  H04J14/0282

Abstract: An integrated optical transceiver apparatus and an OLT are provided. A first splitter and a second splitter are integrated into a PLC structure of the apparatus. The first splitter is configured to output signal light of a first wavelength and signal light of a second wavelength, and output signal light of a third wavelength and signal light of a fourth wavelength. The second splitter is configured to separate the signal light of the third wavelength and the signal light of the fourth wavelength, output the signal light of the third wavelength, and output the signal light of the fourth wavelength. A first optical detector and a second optical detector are disposed on the PLC structure, where the first optical detector and the second optical detector are configured to convert, into electrical signals, the signal light output by the second splitter and the signal light output by the second splitter.

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：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：US20230007370A1

公开(公告)日：2023-01-05

申请号：US17941269

申请日：2022-09-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guangcan MI ,  Ruiqiang JI ,  Zeshan CHANG

IPC: H04Q11/00 ,  H04B10/2513 ,  H04J14/02

Abstract: An optical module is disclosed. The optical module includes a first downlink port, a second downlink port, a directional coupler, a optical attenuator, a first photodiode (PD), and a second PD. The directional coupler, connected to the first downlink port, is configured to receive a downlink optical signal. The second PD connected to the directional coupler, is configured to obtain a power value. If the power value is greater than a first threshold, the optical attenuator is configured to receive a attenuation control signal, and attenuate, based on the attenuation control signal, a power of an optical signal passing through the second downlink port. The first PD is configured to: convert the downlink optical signal into a downlink electrical signal, and convert the optical signal passing through the second downlink port into an electrical signal. Both the first downlink port and the second downlink port are connected to the first PD.

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.