公开(公告)号：US06591041B2

公开(公告)日：2003-07-08

申请号：US09819642

申请日：2001-03-29

申请人： Satoru Tomaru ,  Osamu Kobayashi ,  Takashi Uetake

发明人： Satoru Tomaru ,  Osamu Kobayashi ,  Takashi Uetake

IPC分类号： G02B626

CPC分类号： G02B6/29332 ,  G02B6/2835 ,  G02B6/2843

摘要： An optical fiber coupler according to the present invention comprises two optical fibers which each include a core portion serving to propagate light and a clad portion surrounding said core portion, the two optical fibers extending substantially in parallel in a same flat plane, and a melting portion in which the clad portions of the two optical fibers are fused together substantially in a line contact. Two optical fibers are arranged in parallel to permit at least parts of the clad portions to be brought into contact with each other. In this state, the two optical fibers are heated and fused mutually substantially in a line contact and are further drawn for fabrication thereof. The optical fibers are heated preferably employing an electric ceramic microheater. The two optical fibers may be same or different in structural parameters.