Method for Control of Optical Intensity and Extinction Ratio of Laser Modulation in an Optical Transmitter

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	Method for Control of Optical Intensity and Extinction Ratio of Laser Modulation in an Optical Transmitter
其他题名	Method for Control of Optical Intensity and Extinction Ratio of Laser Modulation in an Optical Transmitter
	REDMAN-WHITE, WILLIAM; COUE, DOMINIQUE; WHITFIELD, COLIN; ROOKES, CHRISTIAN; HUTCHINS, DEREK; BROCKLEHURST, GEORGE
	2018-08-02
专利权人	HILIGHT SEMICONDUCTOR LIMITED
公开日期	2018-08-02
授权国家	美国
专利类型	发明申请
摘要	A system for controlling an optical intensity and modulation of an optical data transmitter which includes current driver circuitry configured to provide a drive current to a laser diode wherein said current comprises a fixed component and a modulated component, said modulated component having a magnitude related to an input data stream. The monitor circuitry contains a photodiode and a first transimpedance amplifier coupled to said photodiode, said monitor circuitry configured to provide an output signal related to an optical intensity of said laser diode. The system further includes replica monitor circuitry containing a replica capacitor with a replica capacitance and a second transimpedance amplifier configured to be substantially identical in construction to said first transimpedance amplifier, said second transimpedance amplifier coupled to said replica capacitor. The system further includes replica capacitance control circuitry configured to control said replica capacitance of said replica capacitor to match a capacitance associated with said photodiode.
其他摘要	一种用于控制光学强度和光学数据发射器调制的系统，包括配置成向激光二极管提供驱动电流的电流驱动器电路，其中所述电流包括固定部件和调制部件，所述调制部件具有与之相关的幅度。输入数据流。监视器电路包含光电二极管和耦合到所述光电二极管的第一跨阻抗放大器，所述监视器电路配置成提供与所述激光二极管的光强度相关的输出信号。该系统还包括复制监视器电路，其包含具有复制电容的复制电容器和第二跨阻抗放大器，第二跨阻抗放大器被配置为与所述第一跨阻抗放大器的结构基本相同，所述第二跨阻抗放大器耦合到所述复制电容器。该系统还包括复制电容控制电路，其被配置为控制所述复制电容器的所述复制电容以匹配与所述光电二极管相关联的电容。
主权项	A system for controlling an optical intensity and modulation of an optical data transmitter comprising: current driver circuitry configured to provide a drive current to a laser diode wherein said current comprises a fixed component and a modulated component, said modulated component having a magnitude related to an input data stream; monitor circuitry, comprising a photodiode and a first transimpedance amplifier coupled to said photodiode, said monitor circuitry configured to provide an output signal related to an optical intensity of said laser diode; replica monitor circuitry comprising a replica capacitor with a replica capacitance and a second transimpedance amplifier configured to be substantially identical in construction to said first transimpedance amplifier, said second transimpedance amplifier coupled to said replica capacitor; and replica capacitance control circuitry configured to control said replica capacitance of said replica capacitor to match a capacitance associated with said photodiode.
申请日期	2018-01-30
专利号	US20180219354A1
专利状态	申请中
申请号	US15/883443
公开（公告）号	US20180219354A1
IPC 分类号	H01S5/0683 \| H04B10/50
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/57690
专题	半导体激光器专利数据库
作者单位	HILIGHT SEMICONDUCTOR LIMITED
推荐引用方式 GB/T 7714	REDMAN-WHITE, WILLIAM,COUE, DOMINIQUE,WHITFIELD, COLIN,et al. Method for Control of Optical Intensity and Extinction Ratio of Laser Modulation in an Optical Transmitter. US20180219354A1[P]. 2018-08-02.