Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

Liqiang Yu

Wei Chen

Liming Fang

Xiaofeng Zhang

Jing Hu

Sulin Yang

Dekun Liu

Shengping Li

Xuejin Yan

Jianmin Gong

Zhenwei Cui

Yanfeng Jiang

Junzhe Liu

A depth obtaining component includes a laser driver array and a laser array. The laser array includes a plurality of lasers. The laser driver array includes one or more control units, and each control unit is configured to control selection of one or more lasers in the laser array. The one or more control units are disposed in a charge loop of the laser driver array. A laser corresponding to the control unit can be flexibly selected based on a first switch module and a capacitive module in the control unit. In this way, scanning laser emission of the laser array can be implemented based on the laser drive circuit, no scanning device such as a micro electro mechanical systems mirror needs to be additionally disposed, and circuit support can be provided for implementing a small-sized, power-efficient, and cost-effective optical transmit end.

Depth obtaining component and electronic device

An optical signal modulation circuit includes a laser (DFB), a modulator (EAM), and an operational amplifier. The laser (DFB) generates a laser to stimulate the modulator (EAM) to generate a photon-generated current (i), a first port (a) of the modulator (EAM) is connected to a first input voltage (V), a second port (b) of the modulator (EAM) is connected to an inverting input end of the operational amplifier, a non-inverting input end of the operational amplifier is connected to a second input voltage (V), and an output end of the operational amplifier is connected to the first port (a) of the modulator. In the modulation circuit, a photon-generated current (i) of the EAM is fed back to the operational amplifier, to implement a linear relationship between the second input voltage (V) and the photon-generated current (i) of the EAM, and obtain a linear EML transmission curve, namely, a high-linearity EML.

Optical signal modulation circuit and apparatus

An optical filter comprising a first distributed Bragg reflector (DBR) layer, a second DBR layer, and an intrinsic semiconductor layer positioned between the first DBR layer and the second DBR layer, with the intrinsic semiconductor layer providing a passband wavelength for the optical filter based on a carrier density of the intrinsic semiconductor layer.

Carrier density-based tunable filter

Growing community of inventors

Shenzhen, China

Liqiang Yu