公开(公告)号：US20230412278A1

公开(公告)日：2023-12-21

申请号：US18460296

申请日：2023-09-01

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Jinlong Wei ,  Zhicheng Ye ,  Zhixin Liu

IPC分类号： H04B10/572 ,  H04B10/27 ,  H04B10/50 ,  H04B10/516

CPC分类号： H04B10/572 ,  H04B10/27 ,  H04B10/503 ,  H04B10/516

摘要： 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.