公开(公告)号：US20190222313A1

公开(公告)日：2019-07-18

申请号：US16368491

申请日：2019-03-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianyu ZHENG ,  Shengping LI

IPC: H04B10/079 ,  H04B17/21 ,  H04B17/10

Abstract: The present invention provides a signal processing apparatus, an optical line terminal, and a communications system. The signal processing apparatus includes a signal input interface, a signal output interface, a reset signal generation unit, a signal amplification and equalization unit, an enable signal generation unit, and N direct-current offset calibration loop units. The signal input interface is connected to the signal amplification and equalization unit, the signal amplification and equalization unit is connected to the signal output interface and the enable signal generation unit, the enable signal generation unit is connected to the N direct-current offset calibration loop units, the N direct-current offset calibration loop units are connected to the signal amplification and equalization unit, and the reset signal generation unit is connected to the N direct-current offset calibration loop units. The present invention can reduce an LA burst settling time, thereby reducing physical overheads of a link.

公开(公告)号：US20130148108A1

公开(公告)日：2013-06-13

申请号：US13693657

申请日：2012-12-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zebin LI ,  Degang ZHONG ,  Shengping LI ,  Changliang YU

IPC: G01N21/01

CPC classification number: G01M11/3109 ,  G01M11/3145 ,  H04B10/071 ,  H04B10/272 ,  H04Q11/0067 ,  H04Q2011/0083

Abstract: Embodiments of the present disclosure disclose an OTDR test signal modulation circuit, including a laser diode drive, a laser diode, a current adjusting unit, and an OTDR control unit. The laser diode drive is connected to the laser diode and is configured to drive, according to an input data signal, the laser diode to transmit data light. The current adjusting unit is connected to the laser diode and the OTDR control unit and is configured to adjust a current flowing through the laser diode according to an OTDR test signal provided by the OTDR control unit, so as to modulate the OTDR test signal to the data light transmitted by the laser diode. Moreover, the embodiments of the present disclosure also disclose a passive optical network system and apparatus.

Abstract translation: 本公开的实施例公开了包括激光二极管驱动器，激光二极管，电流调节单元和OTDR控制单元的OTDR测试信号调制电路。 激光二极管驱动器连接到激光二极管，并配置为根据输入数据信号驱动激光二极管传输数据光。 电流调节单元连接到激光二极管和OTDR控制单元，并且被配置为根据由OTDR控制单元提供的OTDR测试信号来调节流过激光二极管的电流，以便将OTDR测试信号调制到 由激光二极管传输的数据光。 此外，本公开的实施例还公开了一种无源光网络系统和装置。