Semiconductor laser drive circuit and information recording device

OPT OpenIR > 半导体激光器专利数据库

	Semiconductor laser drive circuit and information recording device
其他题名	Semiconductor laser drive circuit and information recording device
	USUI, TAKASHI
	2013-03-14
专利权人	KABUSHIKI KAISHA TOSHIBA
公开日期	2013-03-14
授权国家	世界知识产权组织
专利类型	发明申请
摘要	According to an embodiment, a semiconductor laser drive circuit includes first and second high-speed current sources, a low-speed current source, and a coupler. The first and second high-speed current sources have the same or substantially the same characteristics, and the low-speed current source has a characteristic of rising slower than the high-speed current sources. The coupler includes a first output side transmission path for the first high-speed current source having a first characteristic impedance, a second output side transmission path for the second high-speed current source having the first characteristic impedance, and a third output side transmission path for the low-speed current source, and combines signals flowing through the first to third output side transmission paths and outputs the result to the semiconductor laser. The coupler has two resistors of the same resistance value arranged and connected in series between the first and second output side transmission paths, the third output side transmission path is connected to an intermediate point where the resistors are connected, and the first and second output side transmission paths are extended by a predetermined distance by lines having a second characteristic impedance, which is greater than the first characteristic impedance, and connected.
其他摘要	根据一个实施例，半导体激光器驱动电路包括第一和第二高速电流源，低速电流源和耦合器。第一和第二高速电流源具有相同或基本相同的特性，并且低速电流源具有比高速电流源慢上升的特性。耦合器包括用于具有第一特征阻抗的第一高速电流源的第一输出侧传输路径，用于具有第一特征阻抗的第二高速电流源的第二输出侧传输路径，以及第三输出侧传输路径对于低速电流源，并组合流过第一至第三输出侧传输路径的信号，并将结果输出到半导体激光器。耦合器具有两个相同电阻值的电阻器，它们在第一和第二输出侧传输路径之间串联和串联连接，第三输出侧传输路径连接到电阻器连接的中间点，第一和第二输出侧传输路径通过具有第二特征阻抗的线延伸预定距离，所述第二特征阻抗大于第一特征阻抗并连接。
主权项	-
申请日期	2011-09-09
专利号	WO2013035196A1
专利状态	未确认
申请号	PCT/JP2011/070604
公开（公告）号	WO2013035196A1
IPC 分类号	H01S5/06 \| G11B7/125
专利代理人	KURATA, MASATOSHI ET AL.
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/61727
专题	半导体激光器专利数据库
作者单位	KABUSHIKI KAISHA TOSHIBA
推荐引用方式 GB/T 7714	USUI, TAKASHI. Semiconductor laser drive circuit and information recording device. WO2013035196A1[P]. 2013-03-14.