会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Wide temperature range uncooled lightwave transmitter having a heated
laser
    • 宽温度范围的未冷却的光波发射器具有加热的激光
    • US5740191A
    • 1998-04-14
    • US678438
    • 1996-07-13
    • Bryon Lynn KasperFridolin Ludwig Bosch
    • Bryon Lynn KasperFridolin Ludwig Bosch
    • H01S5/00H01S5/022H01S5/024H01S5/0683H01S3/04
    • H01S5/02453H01S5/02216H01L2224/48091H01L2224/48137H01S5/0014H01S5/02284H01S5/06837
    • A laser transmitter that includes a heating element coupled to the laser package and controlled to allow the laser to be kept at a higher temperature than ambient when low temperature extremes occur, thus limiting the range of wavelengths output by the laser over a given temperature range. The laser transmitter includes a semiconductor laser having an associated operating temperature; a laser driver circuit coupled to the semiconductor laser to control a modulation current and bias current conducted by the semiconductor laser; a heating element thermally coupled to the semiconductor laser; and a heating control circuit that (i) senses a temperature substantially representative of the ambient temperature surrounding the laser transmitter, (ii) energizes the heating element to provide heat to the semiconductor laser only when the temperature substantially representative of the ambient temperature is sensed below a predetermined minimum temperature, and (iii) upon energizing the heating element, controls heating of the heating element based on the temperature substantially representative of the ambient temperature.
    • 激光发射器,其包括耦合到激光器封装的加热元件,并被控制以允许激光器在低温极端发生时保持在比环境温度更高的温度,从而限制在给定温度范围内由激光器输出的波长范围。 激光发射器包括具有相关操作温度的半导体激光器; 耦合到所述半导体激光器的激光驱动器电路,以控制由所述半导体激光器传导的调制电流和偏置电流; 热耦合到所述半导体激光器的加热元件; 以及加热控制电路,其(i)感测基本上代表激光发射器周围的环境温度的温度,(ii)只有当基本上代表环境温度的温度被感测在下面时才激发加热元件以向半导体激光器提供热量 预定的最低温度,以及(iii)在加热元件通电时,基于基本上代表环境温度的温度来控制加热元件的加热。