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1.发明公开An optical fiber coupler, a process for fabricating the same and an optical amplifier using the same 有权光纤耦合器制造方法，以及与此光纤耦合器的光放大器
公开(公告)号：EP1056170A2
公开(公告)日：2000-11-29
申请号：EP00110971.9
申请日：2000-05-26
发明人： Okuda, Michitaka, Kyocera Corp., Yokohama Office , Ajima, Hiromi, Kyocera Corp., Yokohama Office , Takei, Yusuke, Kyocera Corp., Yokohama Office , Fujimoto, Hiroshi, Kyocera Corp., Yokohama Office , Miyake, Kazuyuki, Mitsubishi Cable, Ind. Ltd., , Kawamura, Tatsuhiro, Mitsubishi Cable, Ind. Ltd., , Sudo, Yasuhide, Mitsubishi Cable, Ind. Ltd.,
CPC分类号： G02B6/2835 , H01S3/06708 , H01S3/06754 , H01S3/06758 , H01S3/1601 , H01S3/1603
摘要： An optical fiber coupler for optical fiber amplifier use in the field of optical communications is provided. The optical fiber coupler comprises: a rare earth-doped fiber as an optical amplifying element; a quasi rare earth-doped fiber for entrance of input signal light; a fused-stretch fiber portion as a multiplexing element which connects a part of the rare earth-doped fiber and a parts the quasi rare earth-doped fiber, wherein the fused-stretch fiber portion formed by stretched a fused mixture of parts of the rare earth-doped fiber and the quasi rare earth-doped fiber; and a single mode fiber which is jointed at a fused joint portion to another shortened rare earth-doped fiber connected to the fused-stretch fiber portion on a side connected by the quasi rare earth-doped fiber. The quasi rare earth-doped fiber has substantially equal propagation constant to the rare earth-doped fiber without substantially containing rare earth elements. The optical fiber coupler is fabricated by the steps of jointing a single mode fiber with a rare earth-doped fiber by fusing abutted end faces of both fibers to form a combined fiber; and fusing parallel contact parts of a quasi rare earth-doped fiber and of the rare earth-doped fiber of the combined fiber and then elongating the fused parts in a desired diameter to form a fused-stretch fiber portion.
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2.发明授权An optical fiber coupler, a process for fabricating the same and an optical amplifier using the same 有权光纤耦合器制造方法，以及与此光纤耦合器的光放大器
公开(公告)号：EP1056170B1
公开(公告)日：2007-11-28
申请号：EP00110971.9
申请日：2000-05-26
申请人： KYOCERA CORPORATION
发明人： Okuda, Michitaka, Kyocera Corp., Yokohama Office , Ajima, Hiromi, Kyocera Corp., Yokohama Office , Takei, Yusuke, Kyocera Corp., Yokohama Office , Fujimoto, Hiroshi, Kyocera Corp., Yokohama Office , Miyake, Kazuyuki, Mitsubishi Cable, Ind. Ltd., , Kawamura, Tatsuhiro, Mitsubishi Cable, Ind. Ltd., , Sudo, Yasuhide, Mitsubishi Cable, Ind. Ltd.,
CPC分类号： G02B6/2835 , H01S3/06708 , H01S3/06754 , H01S3/06758 , H01S3/1601 , H01S3/1603
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