Shenzhen Atomstack Technologies Co., Ltd

Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

Zebin Li

Yuanqiu Luo

Sulin Yang

Huigang Lin

Shengping Li

Changliang Yu

Degang Zhong

Peng Ou

Laser engraving machine

Laser module

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.

Method and apparatus for testing optical fiber and passive optical network system

An apparatus comprising an optical transceiver module. The apparatus also includes an interface coupled to the optical transceiver and comprising a plurality of pins. The interface is configured to communicate a burst data word at a data rate of about one data word within about a shortest burst time based on multiplexing one of a plurality of control and/or monitoring signals onto one of the plurality of pins.

Fast transceiver control interface

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.

Optical time domain reflectometer test signal modulation circuit, and passive optical network system and apparatus using same

Growing community of inventors

Shenzhen, China

Zebin Li