Control method and control circuit for laser diode, and optical transmitter using the same

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	Control method and control circuit for laser diode, and optical transmitter using the same
其他题名	Control method and control circuit for laser diode, and optical transmitter using the same
	HATTORI, KEITA
	2005-12-29
专利权人	APRESIA SYSTEMS, LTD.
公开日期	2005-12-29
授权国家	美国
专利类型	发明申请
摘要	A control method for a laser diode is conducted such that optical output and OMA (optical modulation amplitude) or extinction ratio of the laser diode are controlled while modulating the optical output of the laser diode by applying a bias current and a modulation current to the laser diode. The method has: a first step of measuring the optical output of the laser diode; a second step of measuring a slope efficiency or a corresponding value of the slope efficiency while conducting APC (automatic power control) to adjust the bias current such that the optical output coincides with a predetermined value; and a third step of adjusting the modulation current by AAC (automatic amplitude control) according to the slope efficiency or the corresponding value of the slope efficiency such that the OMA or extinction ratio coincides with a predetermined value.
其他摘要	实现激光二极管的控制方法，使得通过向激光器施加偏置电流和调制电流来调制激光二极管的光输出，同时控制激光二极管的光输出和OMA（光调制幅度）或消光比。二极管。该方法具有：测量激光二极管的光输出的第一步;第二步，测量斜率效率或斜率效率的对应值，同时进行APC（自动功率控制）以调节偏置电流，使得光输出与预定值一致;第三步，根据斜率效率或斜率效率的对应值，通过AAC（自动幅度控制）调节调制电流，使得OMA或消光比与预定值一致。
主权项	A control method for a laser diode, wherein optical output and OMA (optical modulation amplitude) or extinction ratio of the laser diode are controlled while modulating the optical output of the laser diode by applying a bias current and a modulation current to the laser diode, comprising: a first step of measuring the optical output of the laser diode; a second step of measuring a slope efficiency or a corresponding value of the slope efficiency while conducting APC (automatic power control) to adjust the bias current such that the optical output coincides with a predetermined value; and a third step of adjusting the modulation current by AAC (automatic amplitude control) according to the slope efficiency or the corresponding value of the slope efficiency such that the OMA or extinction ratio coincides with a predetermined value.
申请日期	2005-01-26
专利号	US20050286575A1
专利状态	授权
申请号	US11/042329
公开（公告）号	US20050286575A1
IPC 分类号	H01S3/13 \| H01S5/062
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/181661/57314
专题	半导体激光器专利数据库
作者单位	APRESIA SYSTEMS, LTD.
推荐引用方式 GB/T 7714	HATTORI, KEITA. Control method and control circuit for laser diode, and optical transmitter using the same. US20050286575A1[P]. 2005-12-29.