Optical fiber light coupling interface with an enlarged incident surface

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	Optical fiber light coupling interface with an enlarged incident surface
其他题名	Optical fiber light coupling interface with an enlarged incident surface
	TAKAHASHI, MITSUO
	1995-11-22
专利权人	SEIKOH GIKEN CO., LTD.
公开日期	1995-11-22
授权国家	欧洲专利局
专利类型	发明申请
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.
其他摘要	具有扩大的输入表面（7）的光纤光耦合接口（100）具有光耦合部分和光学元件，光耦合部分由直径扩大的光纤输入端面部分和一对锥形部分（22,23）组成。在所述光耦合部分外部形成的反射层使得从内部发出的光功率从其内部全反射。光耦合部分具有扩大的光纤输入端面，该光纤输入端面由扩大的芯（17）和扩大的包层（18）组成，它们通过这样的工艺制造，即压缩应力施加到光纤的一部分上（ 19）沿其光轴使光纤的半径增大，同时光纤的一部分通过加热熔化，光纤沿垂直于光纤光轴的平面切割。光纤半径增大的点，然后抛光平面。该对锥形部分（22,23）的特征在于，在扩大的光纤输入端面（7）附近的正常光纤部分的芯（17）和包层（18）的半径逐渐减小，因为距所述放大的光纤输入端面的距离增加然后再次增加，直到它经过最小半径点后达到正常的光纤半径。
主权项	An optical fiber light coupling interface (100) with an enlarged input surface (7) feeds light power dispersed from a light source (30) to a transmission optical fiber (19) or any other light propagation media comprising: an enlarged optical fiber input end-face (7) which consists of an enlarged core (17) and an enlarged clad (18) which are fabricated by such processes that a stress of compression applies to a part (20) of the optical fiber along the optical axis thereof so that the radius of said part of the optical fiber (19) is enlarged while said part of the optical fiber is fused by heating, said optical fiber is cut along the plane perpendicular to the optical axis of said optical fiber at the point where said radius of the optical fiber is enlarged, and then said plane is polished; a pair of tapered portions (22, 23) where the radii of the core (17) and clad (18) of the normal optical fiber portion near said extended optical fiber input end-face (7) are gradually decreased as the distance from said extended optical fiber input end-face increases, and then increased again until it goes to the normal optical fiber radius after passing through the minimum radius (21); and an optical reflection layer (24) formed outside said light coupling portion.
申请日期	1995-03-11
专利号	EP0683410A1
专利状态	失效
申请号	EP1995103537
公开（公告）号	EP0683410A1
IPC 分类号	G02B6/255 \| G02B6/42 \| G02B6/26
专利代理人	-
代理机构	ZENZ, JOACHIM KLAUS, DIPL.-ING.
文献类型	专利
条目标识符	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[P]. 1995-11-22.