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	Optical fiber light coupling interface with an enlarged incident surface
	TAKAHASHI, MITSUO
	1995-11-22
著作权人	SEIKOH GIKEN CO., LTD.
专利号	EP0683410A1
国家	欧洲专利局
文献子类	发明申请
其他题名	Optical fiber light coupling interface with an enlarged incident surface
英文摘要	An optical fiber light coupling interface (100) with an enlarged input surface (7) has a light coupling portion consisting of an enlarged optical fiber input end-face portion in diameter and a pair of tapered portions (22, 23), and an optical reflection layer formed outside said light coupling portion so that light power incidents thereon from inside is totally reflected therefrom. The light coupling portion having the enlarged optical fiber input end-face which consists of an enlarged core (17) and an enlarged clad (18) which are fabricated by such processes that a stress of compression is applied to a part of the optical fiber (19) along the optical axis thereof so that the radius of the art of the optical fiber is enlarged while the part of the optical fiber is fused by heating, the optical fiber is cut along the plane perpendicular to the optical axis of the optical fiber at the point where the radius of the optical fiber is enlarged, and then the plane is polished. The pair of tapered portions (22, 23) are characterized in that the radii of the core (17) and clad (18) of the normal optical fiber portion near the enlarged optical fiber input end-face (7) are gradually decreased as the distance from said enlarged optical fiber input end-face increases and then increased again until it goes to the normal optical fiber radius after passing through the minimum point of radius.
公开日期	1995-11-22
申请日期	1995-03-11
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/52015]
专题	半导体激光器专利数据库
作者单位	SEIKOH GIKEN CO., LTD.
推荐引用方式 GB/T 7714	TAKAHASHI, MITSUO. Optical fiber light coupling interface with an enlarged incident surface. EP0683410A1. 1995-11-22.

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