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	Wavelength selecting laser
	OOSHIMA SHIGERU; ITOU TAKAO
	1982-12-24
著作权人	TOKYO SHIBAURA DENKI KK
专利号	JP1982210685A
国家	日本
文献子类	发明申请
其他题名	Wavelength selecting laser
英文摘要	PURPOSE:To reduce the size and weight of a wavelength selecting laser and to digitally readily set and modulate the wavelength of the laser by feeding back to a variable wavelength terminal to be fixed to an arbitrary wavelength. CONSTITUTION:A laser light is incident to a photodetector array 7 thorugh a first lens 4, a Bragg diffraction grating 5 and a second lens 6. The lights of respective wavelengths are incident to photodetectors corresponding to the wavelengths lambda1, lambda2,...lambdan. On the other hand, signal 10 for selecting desired wavelength is fed to a wavelength selector 9, is compared with a signal from a wavelength detector, is then judged, and is applied as an output to a temperature controller 1 The controller controls the current of a temperature varying unit 12 to alter the temperature, thereby moving the wavelength of the laser. The wavelength of the laser can be fixed to the wavelength determined by the wavelength selection signal by this feedback.
公开日期	1982-12-24
申请日期	1981-06-19
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/62827]
专题	半导体激光器专利数据库
作者单位	TOKYO SHIBAURA DENKI KK
推荐引用方式 GB/T 7714	OOSHIMA SHIGERU,ITOU TAKAO. Wavelength selecting laser. JP1982210685A. 1982-12-24.

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