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1.发明授权
公开(公告)号：US5329600A
公开(公告)日：1994-07-12
申请号：US892208
申请日：1992-06-02
申请人： Eisuke Sasaoka , Masumi Fukuma , Hiroaki Takimoto , Hiroshi Suganuma , Hiroshi Yokota , Junichi Yoshikawa , Kazuhiko Arimoto
发明人： Eisuke Sasaoka , Masumi Fukuma , Hiroaki Takimoto , Hiroshi Suganuma , Hiroshi Yokota , Junichi Yoshikawa , Kazuhiko Arimoto
CPC分类号： G02B6/2835
摘要： In an optical fiber coupler fabricating process where couplers are successively formed by heating, elongating and cutting a plurality of long optical fibers, light is led into the first end of the fiber, reflected at the second end of the coupler, and the reflected light is monitored by photodetectors. In this manner, an exact splitting ratio can be obtained. Techniques for minimizing measuring errors caused by the inter-reflected-light interference, the inter-Rayleigh-scattering-light interference, and the interference between the reflected light and the Rayleigh scattering light, while exploiting the advantageous feature of the reflection monitor method that the fiber connection work for each fiber coupler fabrication is not required are disclosed.
摘要翻译： 在通过加热，拉长和切割多根长的光纤连续地形成耦合器的光纤耦合器制造过程中，光被引入光纤的第一端，在耦合器的第二端被反射，并且反射的光是 由光电检测器监测。 以这种方式，可以获得精确的分离比。 用于最小化由反射光干涉引起的测量误差，瑞利散射光干涉以及反射光和瑞利散射光之间的干扰的技术，同时利用反射监测方法的有利特征， 公开了不需要每个光纤耦合器制造的光纤连接工作。
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公开(公告)号：US5205851A
公开(公告)日：1993-04-27
申请号：US766202
申请日：1991-09-27
IPC分类号： G02B6/28
CPC分类号： G02B6/2856 , G02B6/2835
摘要： In a method of producing an optical fiber coupler, in which glass portions of a plurality of optical fibers are heated so as to be fusion bonded to each other and then, are heated so as to be stretched, the improvement comprising: a gas burner which acts as a heat source and has a plurality of gas nozzles arranged in an axial direction of the optical fibers so as to be fixed in position during heating of the glass portions.
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3.发明授权
公开(公告)号：US5261018A
公开(公告)日：1993-11-09
申请号：US840891
申请日：1992-02-26
申请人： Hiroshi Suganuma , Tomoyuki Hattori , Junichi Yoshikawa , Hiroaki Takimoto , Hiroshi Yokota , Nobuo Tomita , Kazuhiko Arimoto
发明人： Hiroshi Suganuma , Tomoyuki Hattori , Junichi Yoshikawa , Hiroaki Takimoto , Hiroshi Yokota , Nobuo Tomita , Kazuhiko Arimoto
CPC分类号： G02B6/2558 , G02B6/2835
摘要： The invention provides an optical-coupler reinforcing member for fixing and reinforcing a fiber-coupler body and a method of performing the reinforcing. The reinforcing member includes heat-shrinkage tubes which are shrunk by heating, and a hollow protection pipe provided in the heat-shrinkage tubes. Cylindrical heat-fusible adhesive members are provided on opposite ends of the protection pipe, and heating is made such that a fusing portion of an optical-fiber coupler body is inserted through the reinforcing member so that the heat-fusible adhesive members and the heat-shrinkage tubes are shrunk by heating to thereby fix and reinforce the optical coupler body.
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4.发明授权
公开(公告)号：US5695540A
公开(公告)日：1997-12-09
申请号：US441304
申请日：1995-05-15
申请人： Hiroshi Suganuma , Tomoyuki Hattori , Hiroaki Takimoto , Eisuke Sasaoka , Hiroshi Yokota , Kenichi Matsushita
发明人： Hiroshi Suganuma , Tomoyuki Hattori , Hiroaki Takimoto , Eisuke Sasaoka , Hiroshi Yokota , Kenichi Matsushita
CPC分类号： G02B6/2835 , G02B6/2856 , G02B6/2551
摘要： Optical fibers are fixed to elongating tables by optical fiber fixing jigs. Coatings are removed from portions of the fibers and respective fibers of two different groups are placed into tight contact with one another. The fibers are then heated by a gas burner 4A so as to be welded integrally with each other, and are then elongated. In one preferred embodiment, the fibers are arranged such that there are gaps therebetween. These gaps are substantially 250 .mu.m. The gaps are sufficiently wide that heating gas flows in a manner such that all the optical fiber strands are heated uniformly to make it possible uniform welding and elongation.
摘要翻译： 光纤通过光纤固定夹固定在伸长台上。 从纤维的部分去除涂层，并且将两个不同组的相应纤维彼此紧密接触。 然后通过气体燃烧器4A加热纤维，以便彼此整体焊接，然后被拉长。 在一个优选实施例中，纤维布置成使得它们之间存在间隙。 这些差距大致是250亩。 间隙足够宽，使得加热气体以使得所有光纤线均匀地加热以使其可能均匀的焊接和伸长的方式流动。
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5.发明授权Method of producing optical fiber couplers using rectifier rods to provide even heat distribution 失效使用整流棒制造光纤耦合器以提供均匀散热的方法
公开(公告)号：US5417734A
公开(公告)日：1995-05-23
申请号：US145509
申请日：1993-11-04
申请人： Hiroshi Suganuma , Tomoyuki Hattori , Hiroaki Takimoto , Eisuke Sasaoka , Hiroshi Yokota , Kenichi Matsushita
发明人： Hiroshi Suganuma , Tomoyuki Hattori , Hiroaki Takimoto , Eisuke Sasaoka , Hiroshi Yokota , Kenichi Matsushita
CPC分类号： G02B6/2835 , G02B6/2856 , G02B6/2551
摘要： Optical fibers are fixed to elongating tables by optical fiber fixing jigs. Coatings are removed from portions of the fibers and respective fibers of two different groups are placed into tight contact with one another. Rectifier rods, supported movably by rectifier rod supporting members, are disposed outside the optical fiber strands. The fibers are then heated by a gas burner 4A so as to be welded integrally with each other, and are then elongated. By using rectifier rods, the outside optical fiber strands of the groups being welded are not so strongly heated that uniform welding and elongation can be realized. In one preferred embodiment, the fibers are arranged such that there are gaps therebetween. These gaps are substantially 250 .mu.m. The gaps are sufficiently wide that heating gas flows in a manner such that all the optical fiber strands are heated uniformly to make it possible uniform welding and elongation.
摘要翻译： 光纤通过光纤固定夹固定在伸长台上。 从纤维的部分去除涂层，并且将两个不同组的相应纤维彼此紧密接触。 由整流棒支撑件可移动地支撑的整流棒设置在光纤线束的外部。 然后通过气体燃烧器4A加热纤维，以便彼此整体焊接，然后被拉长。 通过使用整流棒，被焊接的组的外部光纤线束不会被强烈加热，从而可以实现均匀的焊接和伸长。 在一个优选实施例中，纤维布置成使得它们之间存在间隙。 这些差距大致是250亩。 间隙足够宽，使得加热气体以使得所有光纤线均匀地加热以使其可能均匀的焊接和伸长的方式流动。
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公开(公告)号：US5325450A
公开(公告)日：1994-06-28
申请号：US25643
申请日：1993-03-03
CPC分类号： G02B6/2856 , G02B6/2835
摘要： An optical fiber coupler having a crosstalk characteristic of at least 18 dB. The optical fiber coupler includes a plurality of optical fibers. A length of glass in the optical fibers is exposed by removing the covering. The glass lengths are fused together and extended, during which time the fibers are twisted and subjected to a tension. The twisted fibers are then fixed to a protecting member while the tension is sustained.
摘要翻译： 具有至少18dB的串扰特性的光纤耦合器。 光纤耦合器包括多个光纤。 通过去除覆盖物来曝光光纤中的玻璃长度。 玻璃长度熔合在一起并延伸，在此期间纤维被扭曲并受到张力。 然后将扭曲的纤维固定在保护构件上，同时保持张力。
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公开(公告)号：US5247598A
公开(公告)日：1993-09-21
申请号：US875284
申请日：1992-04-29
CPC分类号： G02B6/2558 , G02B6/2821 , G02B6/2835 , G02B6/36
摘要： A reinforcing apparatus for an optical-fiber coupler is formed by placing fused optical fibers into a grooved U-shaped base structure. A cover which has a different longitudinal length than the base structure is centered on top of the U-shaped base structure. There exists an exposed groove section of the U-shaped base structure which lies on either side of the cover. An adhesive is inserted into these exposed groove sections so as to fix the reinforcing casing and the optical-fiber coupler to each other.
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公开(公告)号：US5395101A
公开(公告)日：1995-03-07
申请号：US212689
申请日：1994-03-14
CPC分类号： G02B6/2835 , G02B6/3616 , G02B6/3636 , Y10S269/902 , Y10S269/903
摘要： A clamp for optical fiber couplers manufacturing apparatus comprises a slotted member having a slot into which optical fibers are inserted and having an opening outwardly winder from the slot so that the optical fibers are introduced into the slot, and a pushing member movably disposed adjacent the slot for pushing the optical fibers through the opening into the slot, wherein the slotted member is away from the pushing member when the fibers are not clamped, and the slotted member is fixed at a position where the slotted member clamps the fibers.
摘要翻译： 用于光纤耦合器制造装置的夹具包括具有狭槽的开槽部件，光纤插入该狭缝中，并且具有从槽开口向外卷绕的狭槽，使得光纤被引入槽中;以及推动构件，其可移动地设置在狭槽附近 用于将光纤通过开口推入槽中，其中当纤维未被夹紧时，开槽构件远离推动构件，并且开槽构件固定在开槽构件夹持纤维的位置。
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公开(公告)号：US5309536A
公开(公告)日：1994-05-03
申请号：US899783
申请日：1992-06-17
申请人： Hiroshi Suganuma , Tomoyuki Hattori , Hiroaki Takimoto , Yoshiharu Okawa , Hiroshi Yokota , Kazuhiko Arimoto
发明人： Hiroshi Suganuma , Tomoyuki Hattori , Hiroaki Takimoto , Yoshiharu Okawa , Hiroshi Yokota , Kazuhiko Arimoto
CPC分类号： G02B6/2856 , G02B6/2835
摘要： The first process for producing an optical fiber coupler includes a first step wherein at least one of the optical fibers to be used is stripped of the coating, a second step in which the bare portion of that optical fiber is heated for a predetermined time to diffuse the dopants, a third step wherein the other optical fibers which have not been heat-treated are stripped of their coating, a fourth step in which the bare portions of all the optical fibers are heated as they are brought into intimate contact, thereby forming a unitary portion, and a fifth step wherein the unitary portion is drawn via heating to form the coupling portion of an optical fiber coupler. The second process for producing an optical fiber coupler includes stripping the coating from at least one optical fiber, fixing the fiber so as to impart an axial stress thereto and then heating the bare portion of the stripped optical fiber thereby thinning the diameter of the heated portion, and then proceeding in the same manner as described with respect to the third through fifth steps of the first embodiment of the present invention. The processes according to the present invention enable a wide-band optical fiber coupler to be easily produced without using optical fibers of different structures but using optical fibers of identical structures.
摘要翻译： 制造光纤耦合器的第一种方法包括：第一步骤，其中使用的光纤中的至少一种被剥离涂层;第二步骤，将该光纤的裸露部分加热预定时间以扩散 掺杂剂，第三步骤，其中未经热处理的其它光纤被剥离，其第四步是将所有光纤的裸露部分紧密接触加热，从而形成 以及第五步骤，其中整体部分通过加热被拉伸以形成光纤耦合器的耦合部分。 制造光纤耦合器的第二工艺包括从至少一根光纤剥离涂层，固定光纤以向其施加轴向应力，然后加热剥离的光纤的裸露部分，从而使加热部分的直径变薄 ，然后以与关于本发明的第一实施例的第三至第五步骤所述相同的方式进行。 根据本发明的方法使得能够容易地制造宽带光纤耦合器，而不使用不同结构的光纤，而是使用相同结构的光纤。
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公开(公告)号：US5176730A
公开(公告)日：1993-01-05
申请号：US843941
申请日：1992-02-18
IPC分类号： G02B6/28
CPC分类号： G02B6/2835
摘要： The invention provides a method for producing an optical-fiber coupler with a preset branching ratio. The present invention relates to a method in which part of a plurality of optical fibers are made to closely contact with each other so as to form a coupler. The coupler is heated to thereby obtain a predetermined branching ratio; the flow rate of a gas to be supplied to a heat source is increased/decreased by a quantity proportional to a difference between the drawing speed and a preset drawing speed while predetermined tension is applied to the optical fibers.
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