专利内容由知识产权出版社提供
专利名称：Process for producing an optical fiber
coupler
发明人：Suganuma, Hiroshi, c/o Yokohama Works of
Sumitomo,Hattori, Tomoyuki, c/o YokohamaWorks of Sumitomo,Takimoto, Hiroaki, c/oYokohama Works of Sumitomo,Okawa,Yoshiharu, c/o Yokohama Works ofSumitomo,Yokota, Hiroshi, c/o YokohamaWorks of Sumitomo,Arimoto, Kazuhiko, c/oSumiden Opcom Ltd.
申请号：EP92110256.2申请日：19920617公开号：EP0519440A3公开日：19930623
专利附图：
摘要：The first process for producing an optical fiber coupler includes a first step (1)wherein at least one of the optical fibers to be used is stripped of the coating, a secondstep (2) in which the bare portion of that optical fiber is heated for a predetermined timeto diffuse the dopants, a third step (3) wherein the other optical fibers which have notbeen heat-treated are stripped of their coating, a fourth step (4) in which the bareportions of all the optical fibers are heated as they are brought into intimate contact,thereby forming a unitary portion, and a fifth step (5) wherein the unitary portion is drawnvia heating to form the coupling portion of an optical fiber coupler. The second processfor producing an optical fiber coupler includes stripping the coating from at least oneoptical fiber, fixing the fiber so as to impart an axial stress thereto and then heating thebare portion of the stripped optical fiber thereby thinning the diameter of the heatedportion, and then proceeding in the same manner as described with respect to the thirdthrough fifth steps of the first embodiment of the present invention. The processesaccording to the present invention enable a wide-band optical fiber coupler to be easilyproduced without using optical fibers of different structures but using optical fibers of
identical structures.
申请人：SUMITOMO ELECTRIC INDUSTRIES, LTD.,SUMIDEN OPCOM, LTD.
地址：5-33, Kitahama 4-chome, Chuo-ku Osaka-shi, Osaka 541 JP,6-31, Omori-Nishi 7-chome Ota-ku, Tokyo JP
国籍：JP,JP
代理机构：Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
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