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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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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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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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4.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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5.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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6.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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7.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：US4832720A
公开(公告)日：1989-05-23
申请号：US102248
申请日：1987-09-28
IPC分类号： G02B6/00 , C03B20/00 , C03B37/012 , C03B37/028
CPC分类号： C03B37/01222 , C03B37/027 , C03B2203/34
摘要： A multi-core optical fiber with improved dimensional accuracy is produced by a method comprisinginserting at least two core glass rods in bores formed in a cladding glass rod having a refractive index lower than that of the core glass rods to be inserted,heating a composite of the cladding glass rod and the core glass rods to integrate them together, anddrawing the integrated composite to fabricate a multi-core optical fiber.The drawing may be carried out simultaneously with the integration step.
摘要翻译： 通过包括在形成于折射率低于待插入的芯玻璃棒的折射率的包层玻璃棒的孔中插入至少两个核心玻璃棒的方法来制造具有改进的尺寸精度的多芯光纤，加热复合材料 的包层玻璃棒和芯玻璃棒将它们集成在一起，并绘制集成复合材料以制造多芯光纤。 该图可以与集成步骤同时进行。
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公开(公告)号：US4793842A
公开(公告)日：1988-12-27
申请号：US139141
申请日：1987-12-21
IPC分类号： G02B6/00 , C03B20/00 , C03B37/012 , C03B37/025 , G02B6/02 , C03B37/014 , C03B37/027
CPC分类号： C03B37/01211 , Y02P40/57 , Y10S65/16 , Y10S65/90
摘要： A rod-in-tube method for producing a glass preform for use in the fabrication of an optical fiber, which comprises steps of inserting a glass rod constituting a core material in a glass tube constituting a cladding material, heating the rod-tube composite by an outer heating source with introducing, in the gap between the rod and the tube, a gaseous mixture containing a silicon halogenide, a fluorine-containing compound and oxygen gas in which a ratio of silicon and fluorine (Si/F) is larger than 1/300 and smaller than 1/5, and heating and fusing the composite at a temperature not lower than 1,900.degree. C. with filling the gap by a gaseous mixture comprising a halogen-containing compound and oxygen gas; from which glass preform, an optical fiber with low attenuation of light transmission, particularly in a long wavelength range, is fabricated.
摘要翻译： 一种用于制造用于制造光纤的玻璃预制棒的棒管式方法，包括以下步骤：将构成芯材的玻璃棒插入构成包层材料的玻璃管中，通过以下步骤加热棒管复合物： 外部加热源，其在棒和管之间的间隙中引入含有硅和氟（Si / F）比大于1的硅卤化物，含氟化合物和氧气的气体混合物 / 300且小于1/5，并且在不低于1900℃的温度下加热和熔合复合材料，通过包含含卤化合物和氧气的气体混合物填充间隙; 制造玻璃预制件，具有低透光衰减的光纤，特别是在长波长范围内。
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