公开(公告)号：US20140097756A1

公开(公告)日：2014-04-10

申请号：US14107721

申请日：2013-12-16

Applicant: Huawei Technologies Co., LTD.

Inventor： Degang Zhong ,  Sulin Yang ,  Shenping Li ,  Zebin Li

IPC: H04B10/564

CPC classification number: H04B10/564 ,  G01M11/3109 ,  H01S5/042 ,  H01S5/0683 ,  H04B10/071

Abstract: A method can be used for controlling optical power. Output optical power of an optical source is monitored and it is determined whether a preset test control signal is received. When the preset test control signal is not received, a data signal is modulated to output light of the optical source and a bias current of the optical source is adjusted according to an output optical power monitoring result of the optical source to implement automatic power control. When the preset test control signal is received, a test is started and a test signal is superimposed to the data signal to form a superimposed signal. The superimposed signal is modulated to the output light of the optical source. The output optical power monitoring result of the optical source is ignored during the test period to maintain the bias current of the optical source at a preset target value.

Abstract translation: 一种方法可用于控制光功率。 监视光源的输出光功率，并确定是否接收到预设的测试控制信号。 当未接收到预设的测试控制信号时，调制数据信号以输出光源的光，并且根据光源的输出光功率监视结果来调节光源的偏置电流以实现自动功率控制。 当接收到预设的测试控制信号时，开始测试并且将测试信号叠加到数据信号以形成叠加的信号。 叠加的信号被调制到光源的输出光。 在测试期间，光源的输出光功率监测结果被忽略，以将光源的偏置电流保持在预设的目标值。

公开(公告)号：US09106333B2

公开(公告)日：2015-08-11

申请号：US13894767

申请日：2013-05-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Degang Zhong ,  Zebin Li ,  Changliang Yu ,  Shengping Li

IPC: H04B10/08 ,  H04B17/00 ,  H04B10/07 ,  H04B10/071

CPC classification number: H04B10/07 ,  H04B10/071

Abstract: A method for testing an optical fiber includes: receiving a test optical signal from an optical fiber network, and converting the test optical signal into a test current signal; receiving, by a transimpedance amplifier, the test current signal by using a first working mode and outputting a first test voltage signal; acquiring a swing of the first test voltage signal, and determining whether the swing of the first test voltage signal meets a preset condition; and receiving, by the transimpedance amplifier, the test current signal by using a second working mode and outputting a second test voltage signal when the swing of the first test voltage signal meets the preset condition, where an upper limit and a lower limit of a receiver dynamic range when the transimpedance amplifier works in the first working mode are different from those when the transimpedance amplifier works in the second working mode.

Abstract translation: 一种用于测试光纤的方法包括：从光纤网络接收测试光信号，并将测试光信号转换成测试电流信号; 通过使用第一工作模式通过跨阻抗放大器接收测试电流信号并输出​​第一测试电压信号; 获取所述第一测试电压信号的摆幅，并且确定所述第一测试电压信号的摆幅是否满足预设条件; 并且通过所述跨阻放大器通过使用第二工作模式接收所述测试电流信号，并且当所述第一测试电压信号的摆幅满足所述预设条件时，输出第二测试电压信号，其中接收器的上限和下限 当跨阻放大器工作在第一工作模式时的动态范围与跨阻放大器工作在第二工作模式时的动态范围不同。

公开(公告)号：US20130259470A1

公开(公告)日：2013-10-03

申请号：US13894767

申请日：2013-05-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Degang Zhong ,  Zebin Li ,  Changliang Yu ,  Shengping Li

IPC: H04B10/07

CPC classification number: H04B10/07 ,  H04B10/071

Abstract: A method for testing an optical fiber includes: receiving a test optical signal from an optical fiber network, and converting the test optical signal into a test current signal; receiving, by a transimpedance amplifier, the test current signal by using a first working mode and outputting a first test voltage signal; acquiring a swing of the first test voltage signal, and determining whether the swing of the first test voltage signal meets a preset condition; and receiving, by the transimpedance amplifier, the test current signal by using a second working mode and outputting a second test voltage signal when the swing of the first test voltage signal meets the preset condition, where an upper limit and a lower limit of a receiver dynamic range when the transimpedance amplifier works in the first working mode are different from those when the transimpedance amplifier works in the second working mode.

Abstract translation: 一种用于测试光纤的方法包括：从光纤网络接收测试光信号，并将测试光信号转换成测试电流信号; 通过使用第一工作模式通过跨阻抗放大器接收测试电流信号并输出​​第一测试电压信号; 获取所述第一测试电压信号的摆幅，并且确定所述第一测试电压信号的摆幅是否满足预设条件; 并且通过所述跨阻放大器通过使用第二工作模式接收所述测试电流信号，并且当所述第一测试电压信号的摆幅满足所述预设条件时，输出第二测试电压信号，其中接收器的上限和下限 当跨阻放大器工作在第一工作模式时的动态范围与跨阻放大器工作在第二工作模式时的动态范围不同。

公开(公告)号：US08780340B2

公开(公告)日：2014-07-15

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: G01N21/00 ,  G01J1/04 ,  G01J1/42 ,  G01J5/08 ,  G01M11/00

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。