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公开(公告)号：US06735983B1
公开(公告)日：2004-05-18
申请号：US09830939
申请日：2001-05-03
IPC分类号： C03B3702
CPC分类号： C03B37/0253 , C03B37/02736 , C03B37/029 , C03B2205/63 , C03B2205/70 , C03B2205/72 , C03B2205/80
摘要： A fiber drawing method according to the present invention is a drawing method of optical fiber for drawing an optical fiber 14 from one end of a fiber preform 13 by softening with heat, wherein the fiber preform 13 is set in a semi-closed space 10, 20 opening in part at a lower end in a fiber drawing furnace, the fiber preform 13 is heated by a heater 15 disposed on the lower end side of this semi-closed space 10, 20, and fiber drawing is carried out with adjusting a quantity of heat dissipation from the upper portion 20 of this semi-closed space.
摘要翻译： 根据本发明的纤维拉伸方法是通过用热软化从纤维预成型体13的一端拉伸光纤14的光纤的拉丝方法，其中纤维预制棒13设置在半封闭空间10中， 20在纤维拉伸炉的下端部分地开口，纤维预成型体13被设置在该半封闭空间10,20的下端侧的加热器15加热，并且通过调节量进行纤维拉伸 从该半封闭空间的上部20散热。
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公开(公告)号：US06810692B2
公开(公告)日：2004-11-02
申请号：US10445814
申请日：2003-05-28
IPC分类号： C03B37027
CPC分类号： C03B37/029 , C03B2205/63 , C03B2205/74 , C03B2205/80 , C03B2205/90 , C03B2205/92 , C03B2205/98
摘要： A furnace for drawing an optical fiber provided with a muffle tube (10) and inner tubes (5,5′) connected to the upper end of the core tube, wherein a preform (1) supported by a dummy rod (2) at the upper part thereof is disposed inside the muffle tube (10) and inner tubes (5,5′) so as to be movable downward together with dummy rod (2), the preform (1) is heated and melted by a heater (11) from the outside of the muffle tube (10) and an optical fiber (1a) is pulled out from the lower end of the preform (1); the furnace is further provided with one or a plurality of sets of separating plates (4, 17) adapted to partition a space in the inner tubes (5,5′) above the preform (1) into a plurality of portions in the advance direction of the preform and disposed in the space, and with gas blowing inlets (8) disposed in the parts of wall surfaces of the inner tubes (5,5′) which are below the separating plates (4, 17) and adapted to blow an inert gas into the inner tubes (5,5′) and the muffle tube (10), thereby preventing variations in diameter of the optical fiber (1a).
摘要翻译： 一种用于拉制设置有马弗管（10）的光纤和连接到芯管的上端的内管（5,5'）的炉，其中，在所述芯管的上端由所述虚拟棒（2）支撑的预成型件（1） 其上部设置在马弗管（10）和内管（5,5'）的内部，以便与虚拟棒（2）一起向下移动，预成型件（1）由加热器（11）加热和熔化， 从马弗管（10）的外部和光纤（1a）从预成型件（1）的下端拉出; 炉还设置有一组或多组分离板（4,17），其适于将预成型件（1）上方的内管（5,5'）中的空间分隔成前进方向的多个部分 并且设置在所述空间中，并且具有设置在所述分隔板（4,17）下方的内管（5,5'）的壁表面的部分中的气体吹入口（8），并且适于吹塑 惰性气体进入内管（5,5'）和马弗管（10），从而防止光纤（1a）的直径变化。
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公开(公告)号：US06668592B1
公开(公告)日：2003-12-30
申请号：US09622827
申请日：2000-08-24
IPC分类号： C03B37029
CPC分类号： C03B37/029 , C03B2205/63 , C03B2205/74 , C03B2205/80 , C03B2205/90 , C03B2205/92 , C03B2205/98
摘要： A furnace for drawing an optical fiber provided with a muffle tube (10) and inner tubes (5,5′) connected to the upper end of the core tube, wherein a preform (1) supported by a dummy rod (2) at the upper part thereof is disposed inside the muffle tube (10) and inner tubes (5,5′) so as to be movable downward together with dummy rod (2), the preform (1) is heated and melted by a heater (11) from the outside of the muffle tube (10) and an optical fiber (1a) is pulled out from the lower end of the preform (1); the furnace is further provided with one or a plurality of sets of separating plates (4, 17) adapted to partition a space in the inner tubes (5, 5′) above the preform (1) into a plurality of portions in the advance direction of the preform and disposed in the space, and with gas blowing inlets (8) disposed in the parts of wall surfaces of the inner tubes (5, 5′) which are below the separating plates (4,17) and adapted to blow an inert gas into the inner tubes (5,5′) and the muffle tube (10), thereby preventing variations in diameter of the optical fiber (1a).
摘要翻译： 一种用于拉制设置有马弗管（10）的光纤和连接到芯管的上端的内管（5,5'）的炉，其中，在所述芯管的上端由所述虚拟棒（2）支撑的预成型件（1） 其上部设置在马弗管（10）和内管（5,5'）的内部，以便与虚拟棒（2）一起向下移动，预成型件（1）由加热器（11）加热和熔化， 从马弗管（10）的外部和光纤（1a）从预成型件（1）的下端拉出; 该炉还设置有一组或多组分离板（4,17），其适于将预成型件（1）上方的内管（5,5'）中的空间分隔成前进方向的多个部分 并且设置在所述空间中，并且具有设置在所述分离板（4,17）下方的内管（5,5'）的壁表面的部分中的气体吹入口（8），并且适于吹塑 惰性气体进入内管（5,5'）和马弗管（10），从而防止光纤（1a）的直径变化。
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公开(公告)号：US06907757B2
公开(公告)日：2005-06-21
申请号：US10078269
申请日：2002-02-20
IPC分类号： G02B6/00 , C03B37/027 , C03B37/029 , C03B37/07 , C03B37/02
CPC分类号： C03B37/029 , C03B2205/63 , Y02P40/57
摘要： The drawing method of the present invention uses a drawing furnace comprising a furnace muffle tube, a furnace body and a heater. According to the method, an optical fiber preform is inserted from the inlet of the furnace muffle tube, the optical fiber preform is melted by means of a heater, under a specified gas atmosphere, and is drawn toward the outlet of the furnace muffle tube by means of a specified drawing tension. The optical fiber preform and the drawing furnace used in this method both satisfy the condition of below-indicated formula (1): L/D≧8 (1) wherein L indicates the length of the furnace body in the drawing direction and D indicates the diameter of the optical fiber preform. Through this method, even for the case of drawing optical fibers having a large relative index difference between the central core and the cladding, optical fibers wherein residual amounts of lattice defects are sufficiently reduced and degradation of characteristics under a hydrogen atmosphere is sufficiently suppressed can be obtained efficiently and at low cost.
摘要翻译： 本发明的拉拔方法使用包括炉马弗管，炉体和加热器的拉丝炉。 根据该方法，从炉马弗管的入口插入光纤预制棒，在特定的气体气氛下，通过加热器将光纤预制棒熔化，并通过炉管马弗管的出口向炉马弗管的出口拉出 指定图纸张力的手段。 本方法中使用的光纤预制棒和拉丝炉均满足下述式（1）的条件：<？in-line-formula description =“In-line formula”end =“lead”？> L / D > = 8（1）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中L表示炉体在拉伸方向上的长度，D表示光纤的直径 预制件。 通过这种方法，即使在中心纤芯和包层之间绘制相对折射率差大的光纤的情况下，也可充分地抑制晶格缺陷残留量的充分降低，氢气氛下的特性劣化得到充分抑制的光纤， 有效地以低成本获得。
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公开(公告)号：US06399158B1
公开(公告)日：2002-06-04
申请号：US09485883
申请日：2000-02-18
IPC分类号： C08F248
CPC分类号： B05D3/067 , B05C3/12 , B05C9/14 , B05D2256/00 , C03C25/12
摘要： The amount of dimming components originating in an ultraviolet-curing resin and adhering to a quartz tube is reduced, and a decline in the ultraviolet transmittance is prevented, during ultraviolet-curing of a resin coated on a liner body through an ultraviolet-transmitting tubular member placed inside a curing apparatus and of curing ultraviolet-curing resin by irradiating ultraviolet rays from outside the ultraviolet-transmitting tubular member. Embodiments include coating the inner surface of the ultraviolet-transmitting tubular member with titanium and employing an atmosphere of lover 0.1% oxygen.
摘要翻译： 源于紫外线固化树脂并附着在石英管上的调光组分的量减少，并且在通过紫外线透射管状部件涂覆在衬垫体上的树脂的紫外线固化期间，可以防止紫外线透过率的下降 放置在固化装置的内部，并且通过从紫外线透过管状部件的外部照射紫外线来固化紫外线固化树脂。 实施例包括用钛涂覆紫外线透射管状部件的内表面并使用情况为0.1％氧气的气氛。
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公开(公告)号：US06928840B1
公开(公告)日：2005-08-16
申请号：US10089719
申请日：2000-10-11
IPC分类号： C03B37/027 , C03B37/029 , G02B6/00 , C03B37/025 , C03B37/03
CPC分类号： C03B37/02718 , C03B37/029 , C03B2205/56 , C03B2205/82 , C03B2205/83 , C03B2205/90
摘要： A drawing apparatus 1 comprises a drawing furnace 11, a protecting tube 21, and a resin curing unit 31. A buffer chamber 41 is disposed between the drawing furnace 11 and the protecting tube 21, and has a length L1 in the drawing direction of the optical fiber 3. The buffer chamber 41 is constituted by a first buffer cell 42 and a second buffer cell 45. In the space within the buffer chamber 41, an He gas, which is an atmosphere gas within the drawing furnace 11, and the air, which is an atmosphere gas within the protecting tube 21, exist in a mixed state. The optical fiber 3 drawn upon heating in the drawing furnace 11 is fed to the protecting tube 21, and a predetermined part of the optical fiber 3 is annealed at a predetermined cooling rate. Thereafter, a coating die 62 coats the optical fiber 3 with a UV resin solution 63, and the resin curing unit 31 cures the UV resin 63, whereby a coated optical fiber 4 is obtained.
摘要翻译： 拉制装置1包括拉丝炉11，保护管21和树脂固化单元31。 缓冲室41设置在拉丝炉11和保护管21之间，并且在光纤3的拉伸方向上具有长度L 1。 缓冲室41由第一缓冲单元42和第二缓冲单元45构成。 在缓冲室41内的空间内，作为吸入炉11内的气氛气体的He气体和作为保护管21内的气氛气体的空气以混合状态存在。 在拉丝炉11中加热拉制的光纤3被送入保护管21，光纤3的规定部分以规定的冷却速度进行退火。 此后，涂布模具62用UV树脂溶液63涂覆光纤3，树脂固化单元31固化UV树脂63，从而获得涂覆的光纤4。
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7.发明授权Method and apparatus for fabricating coated optical fiber, and coated optical fiber 有权用于制造涂覆光纤和涂覆光纤的方法和装置公开(公告)号：US06519404B1
公开(公告)日：2003-02-11
申请号：US09890166
申请日：2001-07-27
IPC分类号： G02B602
CPC分类号： C03B37/032 , C03B37/027 , C03B37/02745 , C03B2203/06 , C03B2203/19 , C03B2203/36 , C03B2205/06 , C03C25/12 , C03C25/18
摘要： In a fabrication method of coated optical fiber 21, the coated optical fiber 21 is fabricated by heating to soften an end of an optical fiber preform 11 to draw a glass fiber 13 out therefrom, laying coatings 16, 19 on the glass fiber 13 to make the coated optical fiber 21, and guiding the coated optical fiber 21 via a swing guide roller 23 periodically swinging, to twist the coated optical fiber 21, thereby imparting twists about the axis to the glass fiber 13 inside the coated optical fiber 21. The fabrication method comprises a step of passing the coated optical fiber 21 having passed the swing guide roller 23, through a free zone (between 26 and 27) in which the coated optical fiber 21 is allowed to freely rotate about the axis, and thereby longitudinally canceling out elastic torsion stored in the coated optical fiber 21 because of longitudinally alternate inversion of twist directions thereof, wherein a zone length L (m) of the free zone is not less than Lo (m) defined as follows: Lo (m)=[a maximum drawing speed of the coated optical fiber (m/min)]/[the number of clockwise and counterclockwise swing motions per unit time of the swing guide roller (motions/min)].
摘要翻译： 在涂覆光纤21的制造方法中，通过加热来制造涂覆光纤21，以软化光纤预制棒11的端部，从中拉出玻璃纤维13，将玻璃纤维13上涂覆涂层16,19 涂布光纤21，经由摆动导向辊23周期性摆动地引导被覆光纤21，使被覆光纤21扭曲，从而使被覆光纤21内的玻璃纤维13绕轴线扭曲。 方法包括使已经通过摆动引导辊23的涂覆光纤21通过允许涂覆光纤21绕轴线自由旋转的自由区（26和27之间）的步骤，从而纵向消除 由于其扭转方向的纵向交替反转，存储在涂覆光纤21中的弹性扭转，其中自由区的区段长度L（m）不小于如下定义的Lo（m） ：Lo（m）= [涂覆光纤的最大拉伸速度（m / min）] / [摆动导辊的每单位时间的顺时针和逆时针摆动运动的数量（运动/分钟）]。
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8.发明授权Optical fiber, method of making the same, and optical transmission system including the same 失效光纤，其制造方法以及包括该光纤的光传输系统公开(公告)号：US06567597B2
公开(公告)日：2003-05-20
申请号：US09899020
申请日：2001-07-06
IPC分类号： G02B602
CPC分类号： G02B6/03644 , C03B37/0253 , C03B37/027 , C03B37/02745 , C03B37/032 , C03B2203/19 , C03B2203/36 , C03B2205/06 , G02B6/02247 , G02B6/02285 , G02B6/278
摘要： The present invention provides an optical fiber and the like comprising a structure making it possible to realize optical communications with a higher speed and a larger capacity as compared with conventional optical transmission systems. The optical fiber according to the present invention is an optical fiber in which at least one first portion having a positive chromatic dispersion at a predetermined wavelength within a wavelength band in use and at least one second portion having a negative chromatic dispersion at the predetermined wavelength are arranged adjacent each other along the longitudinal direction thereof. In particular, the optical fiber comprises a polarization coupling structure for inducing coupling between polarization modes of propagating light. This polarization coupling structure randomly causes coupling between polarization modes of the propagating light, whereby polarization mode dispersion decreases at the predetermined wavelength. As a consequence, transmission characteristics are effectively restrained from deteriorating due to polarization mode dispersion. Specifically, the polarization coupling structure is a twist applied to the optical fiber.
摘要翻译： 本发明提供一种光纤等，其包括与常规光传输系统相比可以实现具有更高速度和更大容量的光通信的结构。 根据本发明的光纤是一种光纤，其中在使用中的波长带内的预定波长具有正色散的至少一个第一部分和在预定波长处具有负色散的至少一个第二部分是 沿着其纵向彼此相邻布置。 特别地，光纤包括用于在传播光的偏振模式之间引起耦合的偏振耦合结构。 该偏振耦合结构随机引起传播光的偏振模式之间的耦合，从而偏振模色散在预定波长处降低。 结果，由于偏振模式色散，传输特性被有效地抑制为劣化。 具体地，偏振耦合结构是施加到光纤上的扭转。
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公开(公告)号：US20060101861A1
公开(公告)日：2006-05-18
申请号：US11245095
申请日：2005-10-07
IPC分类号： C03B37/029
摘要： A drawing apparatus 1 comprises a drawing furnace 11, a heating furnace 21, and a resin curing section 31. An optical fiber 3 drawn upon heating in the drawing furnace 11 is sent to a heating furnace 21, where a predetermined part of the optical fiber 3 is annealed at a predetermined cooling rate. The temperature of a heater 22 of the heating furnace 21 at the furnace center is set to a temperature within the range from 1200 to 1600° C. Thereafter, the optical fiber 3 is coated with a UV resin liquid 52 by a coating die 51, and the UV resin 52 is cured in the resin curing section 31, so as to yield a coated optical fiber 4.
摘要翻译： 拉伸装置1包括拉丝炉11，加热炉21和树脂固化部31。 将在拉丝炉11中加热而拉制的光纤3送入加热炉21，在加热炉21中，光纤3的规定部分以规定的冷却速度进行退火。 炉中心的加热炉21的加热器22的温度设定在1200〜1600℃的温度范围内。此后，通过涂布模51将光纤3涂覆有紫外线树脂液52， 并且在树脂固化部分31中固化UV树脂52，以产生涂覆的光纤4。
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公开(公告)号：US06935139B2
公开(公告)日：2005-08-30
申请号：US10143925
申请日：2002-05-14
IPC分类号： G02B6/00 , C03B37/027 , C03B37/029
CPC分类号： C03B37/029 , C03B37/027 , C03B37/02718 , C03B2205/56 , C03B2205/63 , Y02P40/57
摘要： The method of manufacturing an optical fiber in accordance with the present invention comprises a step of yielding an optical fiber by drawing an optical fiber preform softened upon heating, wherein a temperature at which the optical fiber preform is softened is at least 1800° C., whereas the optical fiber preform or optical fiber has a glass cooling rate of 4000° C./sec or less when attaining a temperature of 1800° C.
摘要翻译： 根据本发明的制造光纤的方法包括通过拉伸在加热时软化的光纤预制棒来产生光纤的步骤，其中光纤预制件软化的温度为至少1800℃， 而当达到1800℃的温度时，光纤预制棒或光纤的玻璃冷却速度为4000℃/秒以下。
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