公开(公告)号：US09031108B2

公开(公告)日：2015-05-12

申请号：US14338643

申请日：2014-07-23

Applicant: VIA TECHNOLOGIES, INC.

Inventor： Cheng-Ming Ying ,  Wei-Yu Wang ,  Yi-Jan Wang ,  Yen-Yu Chen

IPC: H01S3/00 ,  H01S5/068 ,  H01S5/183

CPC classification number: H01S5/06804 ,  H01S5/0427 ,  H01S5/183

Abstract: A temperature-compensated laser driving circuit for driving a laser component is provided. The temperature-compensated laser driving circuit includes: a temperature compensation circuit, configured to generate a second current based on a first current and a temperature-independent current; and a modulation current generating circuit, configured to generate a modulation current based on the second current, and calibrate optical power output of the laser component based on the modulation current. The first current is proportional to the absolute temperature. The second current and the first current have a slope relative to the absolute temperature respectively, and the slope of the second current relative to the absolute temperature is larger than of the slope of the first current relative to the absolute temperature.

Abstract translation: 提供了用于驱动激光部件的温度补偿激光驱动电路。 温度补偿激光器驱动电路包括：温度补偿电路，被配置为基于第一电流和与温度无关的电流产生第二电流; 以及调制电流产生电路，被配置为基于所述第二电流产生调制电流，并且基于所述调制电流来校准所述激光器部件的光功率输出。 第一个电流与绝对温度成正比。 第二电流和第一电流分别具有相对于绝对温度的斜率，并且第二电流相对于绝对温度的斜率大于第一电流相对于绝对温度的斜率。