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1. 发明专利

CA2382134C DEVICE FOR REMOVING COATING ON OPTICAL FIBER 未知
公开(公告)号：CA2382134C
公开(公告)日：2006-01-10
申请号：CA2382134
申请日：2000-10-19
申请人： SHOWA ELECTRIC WIRE & CABLE CO , NIPPON TELEGRAPH & TELEPHONE
发明人： KOBAYASHI MASARU , SUMITA MAKOTO , ARISHIMA KOHICHI , MUTA KENICHI , ITOH MITUO , MURASE TOMOTAKA , YOSHIDA TAKUSHI , SHIRAISHI KEIKO
IPC分类号： G02B6/245 , G02B6/00 , G02B6/25 , G02B6/44 , H02G1/12
摘要： A cutting blade (6) is made to cut into the coating layer of an optical fibe r received by a receiving part (2). The optical fiber is drawn as it is to remove the coating layer from the optical fiber. The depth of the cut is controlled by a control means (7) provided to the receiving part (2). The bending modulus of elasticity and thickness of the cutting blade (6) are 900 - 20000 MPa and 0.06-1 mm, respectively. The edge of the cutting blade (6) is generally perpendicular to both sides. Since the material of the cutting bla de (6) is plastic, of the optical fiber is not damaged even if the cutting blad e (6) strikes the optical fiber, and an undue tension is not applied to the optical fiber because of high slidableness of the cutting blade (6) on the peripheral surface of the optical fiber.

2. 发明专利

CA2450972A1 OPTICAL FIBER COMPONENT FOR SPOT SIZE TRANSITION AND METHOD OF MAKING THE SAME 未知
公开(公告)号：CA2450972A1
公开(公告)日：2004-06-24
申请号：CA2450972
申请日：2003-11-27
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： MURASE TOMOTAKA , ONEDA SUSUMU , SHIRAISHI KEIKO , NAKAMURA NAOKO
IPC分类号： G02B6/36 , G02B6/02 , G02B6/255 , G02B6/26 , G02B6/24
摘要： A large-diameter core optical fiber and a small-diameter core high D optical fiber are fusion-spliced, and the vicinity of a spliced portion is heated to expand a core diameter of a core of the high D optical fiber and form a spot size transition portion, whereby spot sizes of the optical fiber and the high D optical fiber are matched and relative refractive index differences thereof are made substantially identical. Subsequently, an arbitrary position of the optical fiber is cut such that the spliced portion and the spot size transition portion are placed inside a ferule, and the optical fiber is arranged on a light incident and outgoing end face side of the ferrule to form an optical fiber component. It is advisable to expand the core diameter of the core while monitoring a transition loss of the spliced portion. In this way, an optical fiber component having an optimal spot size transition portion can be manufactured without requiring an advanced technique, and an optical fiber component, which does not cause increase in a transition loss even in the case in which a high .DELTA. optical fiber is spliced with an ordinary optical fiber used in a communication network, can be provided.

3. 发明专利

CA2513988A1 RESIN COATED OPTICAL FIBER, METHOD OF REMOVING COATING FROM RESIN COATED OPTICAL FIBER AND PROCESS FOR PRODUCING OPTICAL FIBER PART 未知
公开(公告)号：CA2513988A1
公开(公告)日：2004-03-04
申请号：CA2513988
申请日：2003-08-21
申请人： SHOWA ELECTRIC WIRE & CABLE CO , NIPPON TELEGRAPH & TELEPHONE
发明人： TAKEUCHI HIROKAZU , NAGASE RYO , FUNABIKI NOBUO , MURASE TOMOTAKA , NAKAMURA NAHOKO , OHNEDA SUSUMU , SHIRAISHI KEIKO , TABATA MITSUHIRO , ITOH MITSUO , YANAGI SHUICHI , IWANO SHINICHI , MIYAKE TAISEI
IPC分类号： G02B6/02 , G02B6/245 , G02B6/44 , G02B6/00 , G02B6/36
摘要： Optical fiber core wire (1) comprising optical fiber open wire (2) and, sequentially provided on the circumference thereof, primary coating layer (3 a) and secondary coating layer (3b) both constituted of a urethane base ultraviolet hardenable resin. The thicknesses of primary coating layer (3a) and secondary coating layer (3b) are in the range of 60 to 200 .mu.m and 20 to 300 .mu.m, respectively. The pulling force for simultaneously removing the primary coating layer (3a) and secondary coating layer (3b) is 100 gf or les s. The tensile strength of primary coating layer (3a) is in the range of 0.5 to 1 MPa. The swelling ratio of primary coating layer (3a) after immersion in a solvent is in the range of 5 to 150%. The Young~s modulus of secondary coati ng layer (3b) is in the range of 100 to 1500 MPa. This optical fiber core wire allows to have the coatings thereof removed without deterioration of the strength or other properties of optical fiber open wire and can avoid remaining of coating waste on the surface of optical fiber open wire after coating removal operation.

4. 发明专利

JP2005189566A Optical fiber ribbon 审中-公开
标题翻译：光纤罗宾
公开(公告)号：JP2005189566A
公开(公告)日：2005-07-14
申请号：JP2003431768
申请日：2003-12-26
申请人： Showa Electric Wire & Cable Co Ltd , 昭和電線電纜株式会社
发明人： SHIRAISHI KEIKO , MURASE TOMOTAKA , NAKAMURA NAOKO
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide a optical fiber ribbon having an excellent side pressure resistance. SOLUTION: In the optical fiber ribbon 1, a plurality of primary coated optical fibers 2 and a plurality of dummy fibers 3 are arranged in parallel and a common cover layer 4 is formed thereon. The dummy fibers 3 are arranged near both side end parts in a cross-section surface of the optical fiber ribbon 1. Further, the thickness of the common cover layer 4 of the part on which the dummy fibers 3 are arranged is made larger than the thickness of the common cover layer of the part of the primary coated optical fibers 2. The optical fiber ribbon 1 has a higher effect and also has an excellent single fiber separation property when the optical fiber ribbon comprises fine diameter primary coated optical fibers in particular. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供具有优异的耐侧压性的光纤带。解决方案：在光纤带1中，多个初级涂覆光纤2和多个虚拟光纤3平行布置，并且在其上形成公共覆盖层4。虚拟纤维3布置在光纤带1的横截面的两侧端部附近。此外，配置有虚设纤维3的部分的共同覆盖层4的厚度大于初级被覆光纤2的一部分的公共覆盖层的厚度。光纤带1具有更高的效果，并且当光纤带特别是包括细直径的初级涂覆光纤时，也具有优异的单纤维分离性。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2002006144A DEVICE FOR REMOVING COAT FOR COATED OPTOCAL FIBER RIBBON AND METHOD FOR REMOVING COAT 失效
公开(公告)号：JP2002006144A
公开(公告)日：2002-01-09
申请号：JP2000187233
申请日：2000-06-22
申请人： SHOWA ELECTRIC WIRE & CABLE CO , NIPPON TELEGRAPH & TELEPHONE
发明人： SHIRAISHI KEIKO , SAKAKIBARA MASAKI , MURASE TOMOTAKA , YOSHIDA TAKUJI , KOBAYASHI MASARU , SUMITA MAKOTO
IPC分类号： G02B6/00 , H02G1/12
摘要： PROBLEM TO BE SOLVED: To provide a device for removing the coat of a coated optical fiber ribbon 1 that comprises the pressure groove-forming means which comprises a pair (upper and under) of function boards 3 having curved surfaces at their front ends, the coat-gripping means which grips the coat part on a terminal side with a pair (upper and under) of coat-gripping boards 4, and the pulling means for pulling out the coat part; and also a method for removing the coat by the use of the above device. SOLUTION: It is possible to remove the coat without any damage to the coated optical fiber ribbon 1, since the pressure groove is formed by the function boards 3 which have the curved surfaces at their front ends.

6. 发明专利

JPH11311726A COATED OPTICAL FIBER RIBBON 失效
公开(公告)号：JPH11311726A
公开(公告)日：1999-11-09
申请号：JP12091198
申请日：1998-04-30
申请人： SHOWA ELECTRIC WIRE & CABLE CO , NIPPON TELEGRAPH & TELEPHONE
发明人： YAGI KENJI , MURASE TOMOTAKA , SHIRAISHI KEIKO , MUTA KENICHI
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide a coated optical fibers capable of increasing the density of the optical fibers of an optical fiber cable and easily dealing with the high density of PLC, and having high fiber density. SOLUTION: This ribbon 10 is constituted by arraying in parallel optical fibers 11 each consisting of an optical fiber 13 formed by providing a clad layer on a core and a nopeeling thin layer 14 formed of synthetic resin having good adhesive strength to the clad layer of the optical fiber 13 and a 50 to 250 kg/mm Young's modulus at room temperature to a thickness of 2 to 15 μm, and providing a batch coating 12 in two-layered structure at the outer periphery by stacking a primary coating 15 of synthetic resin having a 0.01 to 0.5 kg/mm Young's modulus at room temperature and a secondary coating 16 of synthetic resin having a 10 to 200 kg/mm Young's modulus at room temperature in order.

7. 发明专利

JP2005272285A Method for producing preform rod for photonic crystal fiber 审中-公开
标题翻译：用于生产光子晶体纤维的预制棒的方法
公开(公告)号：JP2005272285A
公开(公告)日：2005-10-06
申请号：JP2004092518
申请日：2004-03-26
申请人： Showa Electric Wire & Cable Co Ltd , 昭和電線電纜株式会社
发明人： FUJITA HITOSHI , MATSUYAMA EIJI , SHIRAISHI KEIKO , MURASE TOMOTAKA
IPC分类号： G02B6/00 , C03B37/012
CPC分类号： C03B37/0122 , C03B2203/14 , C03B2203/42
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a preform rod for a photonic crystal fiber free from the collapse of air holes during the drawing of the preform rod even when drawing the preform rod and the turbulence of the alignment of the air holes and having stabilized characteristics. SOLUTION: In the method for producing the preform rod for the photonic crystal fiber having the air holes arranged around a core as a clad, the air holes are formed by arranging a multiple rod-like member 3 having the outer peripheral part composed of glass 1 and the center part composed of a metal 2 to be tightly close contact around a solid member 4 to become the core to form a bundle 5 for air hole, heating the bundle 5 for air hole to fuse and integrate the glass 1 of the multiple rod-like member 3 and dipping the bundle 5 for air hole into a liquid capable of dissolving the metal to dissolve and remove the metal 2 in the multiple rod-like member 3. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于制造光子晶体纤维的预制棒的方法，即使在拉伸预成型棒时也不会在预成型棒的拉拔期间气孔的塌陷，并且该对准的湍流气孔并具有稳定的特性。解决方案：在用于制造具有布置在芯周围的空气孔作为包层的光子晶体纤维的预制棒的方法中，通过布置具有外周部分的多个杆状构件3来形成气孔玻璃1和由金属2组成的中心部分紧密接触实心构件4以成为芯，以形成用于空气孔的束5，加热用于空气孔的束5以熔化并整合玻璃1的玻璃1 多棒状构件3并将用于空气孔的束5浸入能够溶解金属的液体中，以溶解并除去多个棒状构件3中的金属2.版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2005003899A Optical fiber array for converting mode field diameter and its manufacturing method 审中-公开
标题翻译：用于转换模式场直径的光纤阵列及其制造方法
公开(公告)号：JP2005003899A
公开(公告)日：2005-01-06
申请号：JP2003166805
申请日：2003-06-11
申请人： Showa Electric Wire & Cable Co Ltd , 昭和電線電纜株式会社
发明人： MURASE TOMOTAKA , SHIRAISHI KEIKO , NAKAMURA NAOKO , ONEDA SUSUMU
IPC分类号： G02B6/04
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber array for converting a mode field diameter, an optical fiber array which is used for connecting between multiple SMFs of a different mode field diameter or between a multiple SMF and a PLC and which has less connection loss, and also to provide its manufacturing method. SOLUTION: In an optical fiber array which is structured by arranging in parallel a plurality of cores having a high refractive index and by covering the circumference all together with a clad having a low refractive index, the cores are provided with a refractive index distribution of a graded index type. This optical fiber array is made by drilling a plurality of holes in quartz glass, drawing lines after inserting a core rod in these holes, and cutting off at prescribed intervals. According to the invention, it can provide the optical fiber array for converting a mode field diameter as well as the manufacturing method, eliminating a complex conventional process and enabling a nearly constant stable connection loss to be realized for each optical fiber of a multiple optical fiber. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供用于转换模场直径的光纤阵列，用于连接不同模场直径的多个SMF之间或多个SMF与PLC之间的光纤阵列，其具有更少的连接损耗，也提供其制造方法。解决方案：在通过并排布置具有高折射率的多个芯体并且通过用低折射率的覆层一起覆盖圆周而构成的光纤阵列中，芯具有折射率分布式分类索引类型。该光纤阵列通过在石英玻璃中钻出多个孔，在将芯棒插入这些孔中之后绘制线，并以规定的间隔切断来制造。根据本发明，可以提供用于转换模场直径的光纤阵列以及制造方法，消除复杂的常规工艺，并且能够实现对多光纤的每个光纤几乎恒定的稳定的连接损耗。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JPH08306240A HEAT RESISTANT, RADIATION RESISTANT CABLE AND ITS MANUFACTURE 失效
公开(公告)号：JPH08306240A
公开(公告)日：1996-11-22
申请号：JP11206695
申请日：1995-05-10
申请人： SHOWA ELECTRIC WIRE & CABLE CO , TOSHIBA CORP , JAPAN ATOMIC ENERGY RES INST
发明人： SHIONO TAKEO , NAKAMURA HIROSHI , MURASE TOMOTAKA , MITSUI HISAYASU , SEGUCHI TADAO , YAGI TOSHIAKI
IPC分类号： C08G73/10 , H01B3/30 , H01B7/28 , H01B7/29 , H01B13/06 , H01B7/34
摘要： PURPOSE: To provide a cable whose heat resistant temperature is 250 deg.C or higher and radiation resistance is excellent by arranging an insulating cover prepared by irradiating a radiation having a specific condition to a resin composition whose main component is specific thermoplastic polyimide in the outer circumference of a conductor. CONSTITUTION: Thermoplastic polyimide having a repeated unit represented by the formula as a base skeleton is extruded in the outer circumference of a conductor made of an annealed copper wire, a sliver plated annealed copper wire or the like for covering, a radiation of 5MGy or more is irradiated under a temperature of 60 deg.C or higher. Preferable heating temperature is 200-250 deg.C, irradiation in an inert gas atmosphere such as a nitrogen atmosphere is desirable for preventing oxidation deterioration of a material, and since the excess amount of radiation deteriorates physical property, irradiation by 100MGy or less of electron beams or 10MGy or less of rays is desirable. The glass transition point of an insulating cover obtained is shifted to a high temperature side, and the use at 250 deg.C or higher is made possible.

10. 发明专利

JP2006084697A Method and manufacturing apparatus of manufacturing low-loss optical fiber 审中-公开
标题翻译：制造低损耗光纤的方法和制造设备
公开(公告)号：JP2006084697A
公开(公告)日：2006-03-30
申请号：JP2004268524
申请日：2004-09-15
申请人： Showa Electric Wire & Cable Co Ltd , 昭和電線電纜株式会社
发明人： YAMADA NORIHIKO , MORISHITA YUICHI , MURASE TOMOTAKA , ONUKI AKIRA
IPC分类号： G02B6/00 , G02B6/02
摘要： PROBLEM TO BE SOLVED: To provide a method and a manufacturing apparatus for a low-loss optical fiber, whose structure is simpler and whose working efficiency is higher than those with a conventional technology. SOLUTION: An optical fiber is accepted as a product when disappearance of the peak of absorption of the wavelength of 630 nm band by non-cross linked oxygen defect (NBOHC) appearing before a deuterium processing is confirmed on the deuterium processing. The confirmation is performed by measuring a transmission loss in the range of wavelengths from 600 nm to 1,100 nm at every prescribed time interval or at arbitrary times during the deuterium processing, or by continuously measuring the transmission loss during the deuterium processing by making light incident from a single light source having 630 nm. By performing the above confirmation, a conventional hydrogen processing is unnecessary and a step of manufacturing the low-loss optical fiber is made remarkably efficient. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：提供一种低损耗光纤的方法和制造装置，其结构更简单并且其工作效率高于常规技术的工作效率。解决方案：在氘处理确认氘处理之前出现的非交联氧缺陷（NBOHC）消失630nm波段的波长吸收峰值时，可以接受光纤作为产品。通过在每个规定的时间间隔或在氘处理期间的任意时间测量在600nm至1100nm的波长范围内的传输损耗，或者通过连续测量氘处理期间的传输损耗，通过使光从具有630nm的单个光源。通过执行上述确认，不需要常规氢处理，并且制造低损耗光纤的步骤显着有效。版权所有（C）2006，JPO＆NCIPI

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