Huawei Technologies Co., Limited

Source Photonics (Chengdu) Company Limited

Qi Peng

Chaoyuan Sun

Meiling Lu

Hong Yang

Yongmeng Tian

Xuejing Zhang

Huan Jiang

Yunwu Peng

Guoqiang Wang

An online voltage adjustment circuit for a board power supply, where a first voltage division circuit is coupled in parallel to a first bias resistor, a second voltage division circuit is coupled in parallel to a second bias resistor, and a detection chip obtains an initial output voltage of the board power supply. Based on the initial output voltage and a preset voltage, a control chip controls a first switch on the first voltage division circuit to be on or off, and a second switch on the second voltage division circuit to be on or off. As a result, a feedback value of a feedback pin of the board power supply changes, and then an output voltage of the board power supply changes, thereby adjusting the output voltage of the board power supply.

Online voltage adjustment circuit for board power supply

The present invention relates to an optical module and optical module system using the same. The optical module comprises a transceiving unit, an antenna and an MCU. The transceiving unit receives control commands from one or more control computers via the antenna and transfers them to the MCU. Then the MCU processes the control commands and provides feedback information to the one or more control computers through the transceiving unit. In the optical module of the present invention, as a result of an additional IOT wireless unit, the optical module is capable of communicating with remote control computers, thereby achieving remote testing and control for optical modules, instead of using conventional control methods for optical modules.

Optical module, optical module system and monitor method using the same

An optical or optoelectronic receiver, an optoelectronic transceiver including the same, and a method and system for protecting a photodetector in the same are disclosed. The method of protecting a photodetector generally includes providing a control voltage to the photodetector so that a current flows through the photodetector, and determining that a transient event has occurred or a transient state exists in the receiver. During the transient event or transient state, the method maintains the control voltage at a normal operating voltage when the current through the photodetector is at or below a predetermined threshold current, and switches the control voltage to a safe mode voltage when the current through the photodetector is above the predetermined threshold current.

Optical receiver, optical transceiver comprising the same, and method of protecting a photodetector in the optical receiver with a transient event or a transient state determination

A charging method and apparatus are provided. The charging method includes obtaining power supply energy needed by a storage system during a power failure, detecting a temperature of an environment in which a supercapacitor is located in order to obtain environmental temperature information of the supercapacitor, where the supercapacitor is configured to provide the power supply energy to the storage system, determining a charging voltage of the supercapacitor according to the environmental temperature information and the power supply energy, and charging the supercapacitor according to the determined charging voltage. Therefore, the supercapacitor can be charged according to an actual charging voltage of the supercapacitor such that a life of the supercapacitor is prolonged.

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Chengdu, China

Qi Peng