Wavelength and output power stabilizing apparatus for semiconductor laser

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	Wavelength and output power stabilizing apparatus for semiconductor laser
其他题名	Wavelength and output power stabilizing apparatus for semiconductor laser
	HORI, NOBUO; OHTOMO, FUMIO; UCHIYAMA, TAKUMI
	1991-08-20
专利权人	KABUSHIKI KAISHA TOPCON, 75-1, HASUNUMA-CHO, ITABASHI-KU, TOKYO, JAPAN, A CORP. OF JAPAN
公开日期	1991-08-20
授权国家	美国
专利类型	授权发明
摘要	An output power and wavelength stabilizing apparatus of a semiconductor laser has an injection current supplying source adapted to supply injection current to a single-mode semiconductor laser, a first light receiving portion adapted to receive a part of the output power of the semiconductor laser through a first optical element with varying spectral characteristics in the wavelength area of the semiconductor laser and to output a first signal, a second light receiving portion adapted to receive a part of the output power of the semiconductor laser through a second optical element with varying spectral characteristics opposite to that of the first optical element and to output a second signal, a wavelength fluctuation detecting portion for producing a difference signal related to the first signal and the second signal and obtaining a fluctuation of the wavelength of the semiconductor laser based on the difference signal, an output fluctuation detecting portion for producing a signal related to the sum of the first and the second signals and obtaining the fluctuation of output power of the semiconductor laser based on the sum signal, and a temperature control portion for controlling the temperature of the semiconductor laser to a predetermined operating temperature based on the fluctuation of the output power of the semiconductor laser obtained by the output power fluctuation detecting portion so that the output power of the semiconductor laser can be maintained constant. The injection current supplying source is used to control the wavelength of the semiconductor laser based on the fluctuation of the wavelength of the semiconductor laser obtained by the wavelength fluctuation detecting portion such that the wavelength remains constant.
其他摘要	半导体激光器的输出功率和波长稳定装置具有注入电流提供源，适于向单模半导体激光器提供注入电流，第一光接收部分适于通过a接收半导体激光器的输出功率的一部分。第一光学元件，在半导体激光器的波长区域中具有变化的光谱特性并输出第一信号，第二光接收部分适于通过具有相反光谱特性的第二光学元件接收半导体激光器的输出功率的一部分波长波动检测部分，用于产生与第一信号和第二信号有关的差信号，并获得波长的波长，以及输出第二信号的波长波动检测部分。基于差信号的半导体激光器，输出波动检测部分，用于产生与第一和第二信号之和有关的信号，并根据和信号获得半导体激光器输出功率的波动，以及温度控制基于由输出功率波动检测部分获得的半导体激光器的输出功率的波动，用于将半导体激光器的温度控制到预定工作温度的部分，使得半导体激光器的输出功率可以保持恒定。注入电流提供源用于基于由波长波动检测部分获得的半导体激光器的波长的波动来控制半导体激光器的波长，使得波长保持不变不变。
申请日期	1989-04-25
专利号	US5042042
专利状态	失效
申请号	US07/342788
公开（公告）号	US5042042
IPC 分类号	H01S5/00 \| H01S5/0683 \| H01S5/0687 \| H01S5/068 \| H02S3/13
专利代理人	-
代理机构	FINNEGAN,HENDERSON,FARABOW,GARRETT & DUNNER
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/34878
专题	半导体激光器专利数据库
作者单位	KABUSHIKI KAISHA TOPCON, 75-1, HASUNUMA-CHO, ITABASHI-KU, TOKYO, JAPAN, A CORP. OF JAPAN
推荐引用方式 GB/T 7714	HORI, NOBUO,OHTOMO, FUMIO,UCHIYAMA, TAKUMI. Wavelength and output power stabilizing apparatus for semiconductor laser. US5042042[P]. 1991-08-20.

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