公开(公告)号：WO2018188167A1

公开(公告)日：2018-10-18

申请号：PCT/CN2017/085374

申请日：2017-05-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： GONG, Jianmin ,  WANG, Heng ,  LI, Shengping ,  YE, Zhicheng

IPC: H05K7/20 ,  H01L23/34

Abstract: An adaptive heat dissipation apparatus is provided, including two or more chamber walls forming a chamber volume having a first open side and a second open side, a heat source positioned at the first open side of the chamber volume, a heat conducting surface positioned at the second open side of the chamber volume, and a thermally-expansive material occupying a predetermined portion of the chamber volume. The thermally-expansive material expands to substantially fill the chamber volume at an ambient temperature above a predetermined temperature threshold and conducts heat from the heat source to the heat conducting surface. The thermally-expansive material contracts to leave an air gap when the ambient temperature is below the predetermined temperature threshold.

公开(公告)号：WO2022223092A1

公开(公告)日：2022-10-27

申请号：PCT/EP2021/060070

申请日：2021-04-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  HANTSCHMANN, Constanze

Inventor： CANO VALADEZ, Ivan, Nicolas ,  YE, Zhicheng

IPC: H01S5/026 ,  H01S5/0625 ,  H01S5/40 ,  H04B10/50

Abstract: A dual output directly modulated laser device is provided that generates two distinct optical output signals. The dual output directly modulated laser device includes two outer gain sections, each directly modulated by injection of a respective modulation current. The dual output directly modulated laser device further includes a central section including a distributed reflector providing optical feedback to both outer gain sections while preventing the generation of stimulated photons. The two outer gain sections form two laser cavities each configured to emit a directly modulated signal as an optical output signal in a direction away from the central section. The dual output directly modulated laser device can simultaneously be used for main-PON upstream and sub-PON downstream transmission, thus, with this enhanced functionality, the laser device makes a passive optical network architecture more energy efficient by reducing power consumption and implementation cost as well.

公开(公告)号：WO2022188962A1

公开(公告)日：2022-09-15

申请号：PCT/EP2021/055988

申请日：2021-03-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  WEI, Jinlong

Inventor： YE, Zhicheng ,  LIU, Zhixin

IPC: H04B10/2575 ,  H04B10/272 ,  H04J14/00 ,  H04J14/02

Abstract: A system for wavelength control in a passive optical network (PON) with point to multi-point (P2MP) topology comprising a central node and end node. The system comprises a central node transceiver configured for broadcasting to end nodes a reference signal carrying a management information, wherein the management information indicates a target frequency assigned to each end node, and an end node transceiver in each end node configured for determining the target frequency by extracting the management information from the reference signal. The system comprises generating a beating frequency by beating the reference signal with an uplink laser signal, and controlling a wavelength of the uplink laser signal to lock to the target frequency based on the beating frequency. The system is compatible with existing power-split optical distribution networks (ODN), with tolerance to an uplink reflection, and has high power sensitivity.