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	Optical filter element
	NUMAI TAKAAKI
	1988-10-24
著作权人	日本電気株式会社
专利号	JP1988256927A
国家	日本
文献子类	发明申请
其他题名	Optical filter element
英文摘要	PURPOSE:To obtain a large variable tuning width of selected wavelength by interposing a distributed feedback area which has a phase shift structure between plural active areas, coupling the active areas with the distributed feedback area optically, and forming the end surfaces of the active areas in nonreflection structure. CONSTITUTION:The distributed feedback area which has the phase shift structure is interposed between the plural active areas, which are coupled optically with the distributed feedback area; and the end surfaces of the active areas are formed in nonreflection structure. Further, when a relation Eg1
公开日期	1988-10-24
申请日期	1987-04-14
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/63077]
专题	半导体激光器专利数据库
作者单位	日本電気株式会社
推荐引用方式 GB/T 7714	NUMAI TAKAAKI. Optical filter element. JP1988256927A. 1988-10-24.

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