Huawei Technologies Co., Limited

Yu Xiong

Bo Huang

Li Zeng

Xiaofei Zeng

Shengmeng Fu

Peng Zha

Yanxin Wang

Jiangwei Man

Chengyan Wang

Zelin Wang

Rixiang Cao

Zhe Yu

Zhiqiang Li

Xin Fu

Yong Luo

Hongyu Li

Liang Cao

Jiehui Hu

Wenming Wang

Xiongwei Yan

Xiaobo Lan

Jianpeng Hu

Shirong Chen

Jingtang Li

Bin Ren

Nan Huai

Xiangjun Lai

This application provides example receiver optical sub-assemblies, example bi-directional optical sub-assemblies, and example optical network devices. One example receiver optical sub-assembly includes a photodiode, a trans-impedance amplifier, and a first filter component. The photodiode is configured to convert an optical signal into an electrical signal, a positive electrode of the photodiode is connected to an input terminal of the trans-impedance amplifier, and a negative electrode of the photodiode is configured to connect to a power supply. The trans-impedance amplifier is configured to amplify the electrical signal output by the photodiode, where a power terminal of the trans-impedance amplifier is configured to connect to a power supply, and a first ground terminal of the trans-impedance amplifier is configured to connect to an external ground.

Receiver optical sub-assembly, bi-directional optical sub-assembly, optical module, and optical network device

Mobile phone

This application provides a receiver optical sub-assembly, a bi-directional optical sub-assembly, and an optical network device to improve anti-electromagnetic crosstalk performance of the receiver optical sub-assembly. The receiver optical sub-assembly includes: a photodiode, a trans-impedance amplifier, and a first filter component. The photodiode is configured to convert an optical signal into an electrical signal, a positive electrode of the photodiode is connected to an input terminal of the trans-impedance amplifier, and a negative electrode of the photodiode is configured to connect to a power supply. The trans-impedance amplifier is configured to amplify the electrical signal output by the photodiode, a power terminal of the trans-impedance amplifier is configured to connect to a power supply, and a first ground terminal of the trans-impedance amplifier is configured to connect to an external ground.

An optical receiver is disclosed, including an optoelectronic detector, a transimpedance amplification (TIA) circuit, a single-ended-to-differential converter, an I/O interface, and a controller. The optoelectronic detector, having bandwidth lower than required system transmission bandwidth, converts an optical signal into a current signal. The TIA circuit compensate gain for the received current signal based on a received control signal, to obtain a voltage signal, where a frequency response value of the current signal within first bandwidth is greater than that within the bandwidth of the optoelectronic detector, and any frequency in the first bandwidth is not lower than an upper cut-off frequency of the optoelectronic detector. The single-ended-to-differential converter converts the voltage signal into a differential voltage signal. The I/O interface outputs the differential voltage signal. The controller generates the control signal based on the differential voltage signal. The optical receiver disclosed can reduce costs while ensuring signal quality.

Optical receiver

The present disclosure relates to optical receivers. One example optical receiver includes an optoelectronic detector, a transimpedance amplification (TIA) circuit, a single-ended-to-differential converter, an I/O interface, and a controller. The optoelectronic detector, having bandwidth lower than required system transmission bandwidth, converts an optical signal into a current signal. The TIA circuit compensates gain for the received current signal based on a received control signal to obtain a voltage signal, where a frequency response value of the current signal within first bandwidth is greater than that within the bandwidth of the optoelectronic detector, and any frequency in the first bandwidth is not lower than an upper cut-off frequency of the optoelectronic detector. The single-ended-to-differential converter converts the voltage signal into a differential voltage signal. The I/O interface outputs the differential voltage signal. The controller generates the control signal based on the differential voltage signal.

The present invention provides a method for information exchange in an access network, an apparatus, and a system, and relates to the communications field. The method includes: receiving, by an access device, a configuration command from a network management server; converting the configuration command into an OpenFlow-protocol-based openflow message; and sending the openflow message to a terminal device, so that the terminal device configures an openflow flow table according to the openflow message.

Method for information exchange in access network, apparatus, and system

An optical fiber connector includes a main body (), a sleeve (), and a plug (). The main body () includes a first cube and a second cube that are formed by means of injection molding, where a first cavity () is disposed inside the first cube, and the first cavity () is used to adapt to an optical fiber sub-assembly inserted from a first end face of the first cube; at least two hook-like structures () are formed, by means of injection molding, on the first cube extending from a second end face that is parallel to the first end face into the first cavity (), and the hook-like structures () are used to tightly lock the optical fiber sub-assembly when the optical fiber sub-assembly is inserted from the first end face.

Optical fiber connector and optical fiber connector component system

The present invention relates to a BFD session negotiation method. The BFD session negotiation method includes: generating a first discriminator value, where the first discriminator value is unique in a local area network to which a local device belongs; generating a first BFD control packet, where the first BFD control packet includes the first discriminator value; and sending the first BFD control packet to a peer device, so that the peer device performs a session negotiation with the local device according to the first discriminator value.

Bidirectional forwarding detection BFD session negotiation method, device, and system

The embodiments of present invention disclose a method and a device for making uplink standby, including: configuring more than one uplink for an Internet Group Management Protocol (IGMP) proxy device, and choosing one of the more than one uplink as a primary uplink; the IGMP proxy device replicating a multicast packet received over the primary uplink and sending the multicast packet replicated over a downlink to a multicast host. In the method provided by the embodiments of the present invention, only the primary uplink is used, which reduces the link bandwidth waste of the multicast host and improves the multicast data transmission efficiency. Flexible methods are adopted for checking the availability of the primary uplink so that the IGMP proxy device may detect in real time whether the primary uplink is available and choose a new primary uplink in time to guarantee the normal multicast communication.

Method and device for making uplink standby

Growing community of inventors

Wuhan, China

Yu Xiong