Invention Grant
- Patent Title: Circuitry and method for driving laser with temperature compensation
- Patent Title (中): 用温度补偿驱动激光器的电路和方法
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Application No.: US14338643Application Date: 2014-07-23
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Publication No.: US09031108B2Publication Date: 2015-05-12
- Inventor: Cheng-Ming Ying , Wei-Yu Wang , Yi-Jan Wang , Yen-Yu Chen
- Applicant: VIA TECHNOLOGIES, INC.
- Applicant Address: TW New Taipei
- Assignee: VIA TECHNOLOGIES, INC.
- Current Assignee: VIA TECHNOLOGIES, INC.
- Current Assignee Address: TW New Taipei
- Agency: McClure, Qualey & Rodack, LLP
- Priority: TW103113184A 20140410
- Main IPC: H01S3/00
- IPC: H01S3/00 ; H01S5/068 ; 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.
Public/Granted literature
- US20150043600A1 CIRCUITRY AND METHOD FOR DRIVING LASER WITH TEMPERATURE COMPENSATION Public/Granted day:2015-02-12
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