发明授权
- 专利标题: Circuitry and method for driving laser with temperature compensation
- 专利标题(中): 用温度补偿驱动激光器的电路和方法
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申请号: US14338643申请日: 2014-07-23
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公开(公告)号: US09031108B2公开(公告)日: 2015-05-12
- 发明人: Cheng-Ming Ying , Wei-Yu Wang , Yi-Jan Wang , Yen-Yu Chen
- 申请人: VIA TECHNOLOGIES, INC.
- 申请人地址: TW New Taipei
- 专利权人: VIA TECHNOLOGIES, INC.
- 当前专利权人: VIA TECHNOLOGIES, INC.
- 当前专利权人地址: TW New Taipei
- 代理机构: McClure, Qualey & Rodack, LLP
- 优先权: TW103113184A 20140410
- 主分类号: H01S3/00
- IPC分类号: H01S3/00 ; H01S5/068 ; H01S5/183
摘要:
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.
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