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	Optical filter device
	NUMAI, TAKAHIRO
	1992-01-28
著作权人	NEC CORPORATION
专利号	US5084897
国家	美国
文献子类	授权发明
其他题名	Optical filter device
英文摘要	An optical filter device comprises a distributed feedback region and an active region which are arranged in series and coupled optically, and anti-reflection structures which are positioned at both ends of the distributed feedback region and active region thus coupled to be in contact therewith so that a predetermined wavelength of an optical signal is selected from optical signals of, for instance, as much as 60 channels so that a wavelength selection can be performed in a narrow bandwidth of less than approximately 1 to 2 ANGSTROM and in a wide tuning range of an optical signal wavelength in accordance with a carrier injection thereinto.
公开日期	1992-01-28
申请日期	1989-04-27
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/82015]
专题	半导体激光器专利数据库
作者单位	NEC CORPORATION
推荐引用方式 GB/T 7714	NUMAI, TAKAHIRO. Optical filter device. US5084897. 1992-01-28.

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