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1. 发明授权

US5024505A Array splice for ribbon-like multi-core optical fibers 失效
标题翻译：带状多芯光纤的阵列接头
公开(公告)号：US5024505A
公开(公告)日：1991-06-18
申请号：US474952
申请日：1990-02-05
申请人： Junji Fujikawa , Fumiaki Tamura
发明人： Junji Fujikawa , Fumiaki Tamura
IPC分类号： G02B6/255 , G02B6/38
CPC分类号： G02B6/3801 , G02B6/3803
摘要： An array splice for ribbon-like multi-core optical fibers comprises capillary tubes of ultraviolet-transmitting glass each having an inner diameter slightly larger than the outer diameter of the clad of an optical fiber, each glass capillary tube including tapered portions on the opposite ends thereof for insertion of optical fiber bodies, and a groove formed in the middle upper surface region thereof for discharging bubbles and adhesive agent, and a base including recesses formed in the middle upper surface region thereof for receiving and supporting the lower portions of the tube walls of the glass capillary tubes, and a plurality of front-edged separators each disposed at the opposite ends of the associated receiving and supporting recess. The separators are disposed with approximately the same pitch as that for the capillary tubes. Defined between adjacent separators are optical fiber insertion paths having a width which increases with increasing distances from the opposite ends of each capillary tube.

2. 发明授权

US5061034A Permanent connector for optical fibers 失效
标题翻译：光纤永久连接器
公开(公告)号：US5061034A
公开(公告)日：1991-10-29
申请号：US465173
申请日：1990-02-26
申请人： Junji Fujikawa , Fumiaki Tamura
发明人： Junji Fujikawa , Fumiaki Tamura
IPC分类号： G02B6/255 , G02B6/38
CPC分类号： G02B6/2558 , G02B6/2555
摘要： A permanent connector for optical fibers comprises a protective glass tube (2), a capillary tube (1) received therein and eccentrically joined thereto, the two tubes being made of ultraviolet-transmitting glass, and an adhesive-passing groove (1c) formed in the middle portion of the capillary tube (1) and opening on the side opposite to the side where they are joined together. An ultraviolet-curing type adhesive agent is charged into the permanent connector for optical fibers and the ends of optical fibers (3, 4) are inserted thereinto through the opposite ends thereof until the clads (3a, 4a) are butted against each other in the capillary tube (1) while pushing out the adhesive agent and air. And ultraviolet rays are radiated to cure the adhesive agent (6), thereby connecting the optical fibers (3, 4) together.

3. 发明授权

US4988161A Optical fiber fixing element and method of manufacturing same 失效
标题翻译：光纤固定元件及其制造方法
公开(公告)号：US4988161A
公开(公告)日：1991-01-29
申请号：US398561
申请日：1989-08-25
申请人： Junji Fujikawa , Fumiaki Tamura
发明人： Junji Fujikawa , Fumiaki Tamura
IPC分类号： G02B6/36 , G02B6/38
CPC分类号： G02B6/3837 , G02B6/3644 , G02B6/3834 , G02B6/3684 , G02B6/3854 , G02B6/3861
摘要： An optical fiber fixing element consists of a glass tube having an inner hole for receiving a clad portion of an optical fiber and which is formed at one end with a conical flared portion converging into the inner hole and a recess for receiving a cover portion of the optical fiber thereinto, both the flared portion and the recess being formed concentrically with the glass tube. A method of manufacturing such optical fiber fixing element is also provided which comprises forming an erosion resistant film on an outer surface, other than an end face, of a glass tube having an inner hole, treating the end face of the glass tube with a glass erosive solution to thereby form a flared portion, and grinding the flared portion to thereby form a recess in the flared portion.
摘要翻译：光纤固定元件由玻璃管组成，该玻璃管具有用于容纳光纤的包层部分的内孔，并且一端形成有会聚在该内孔中的锥形扩口部，以及用于容纳光纤在其中，扩口部分和凹部都与玻璃管同心地形成。还提供了一种制造这种光纤固定元件的方法，该方法包括在具有内孔的玻璃管的外表面的外表面上形成耐腐蚀膜，用玻璃管处理玻璃管的端面从而形成扩口部分，并且研磨扩张部分，从而在扩口部分中形成凹部。

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