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1. 发明申请

US20020174689A1 Manufacturing method of optical fiber preform 有权
标题翻译：光纤预制棒的制造方法
公开(公告)号：US20020174689A1
公开(公告)日：2002-11-28
申请号：US10103786
申请日：2002-03-25
申请人： Sumitomo Electric Industries, Ltd.
发明人： Masashi Onishi , Eiji Yanada , Masaaki Hirano , Hideyuki Ijiri
IPC分类号： G01N023/00
CPC分类号： C03B37/01228
摘要： A method for manufacturing an optical fiber preform that can produce an optical fiber having desired characteristics over the longer length thereof. A crude preform provided with a core region and a cladding region is prepared (Step S1), and at a plurality of positions in the longitudinal direction of the crude preform, a refractive index profile in the cross-section of the crude preform is measured (Step S2). Then, the shape of the cladding region is demarcated based on the shape of the profile (Step S3). Subsequently, the crude preform is ground based on the results of the demarcation (Step S4). Thus, an optical fiber preform that enables the manufacture of an optical fiber having target characteristics is manufactured.
摘要翻译：一种光纤预制棒的制造方法，该光纤预制棒可以在其较长的长度上产生具有所需特性的光纤。制备具有芯区域和包层区域的粗制预制件（步骤S1），并且在粗制预成型件的纵向方向上的多个位置处，测量粗制预成型体的横截面中的折射率分布（步骤S2）。然后，基于轮廓的形状划定包层区域的形状（步骤S3）。随后，基于划分的结果研磨粗制预成型件（步骤S4）。因此，制造能够制造具有目标特性的光纤的光纤预制棒。

2. 发明申请

US20020159689A1 Optical fiber transmission- line 失效
标题翻译：光纤传输线
公开(公告)号：US20020159689A1
公开(公告)日：2002-10-31
申请号：US10126608
申请日：2002-04-22
申请人： Sumitomo Electric Industries, Ltd.
发明人： Masashi Onishi , Eisuke Sasaoka
IPC分类号： G02B006/28 , H04B010/16
CPC分类号： G02B6/29377 , H04B10/25253
摘要： A dispersion-managed optical fiber transmission-line with which the formation of side bands around the optical signal wavelength can be suppressed even when carrying out high-speed signal transmission. An optical fiber transmission-line 1 constitutes one repeater span installed between a transmitter (or repeater) 2 and a receiver (or repeater) 3 and is made up of N sections 41 through 4N in sequence from the transmitter 2 to the receiver 3. The chromatic dispersion at the wavelength 1.55 nullm is positive in the sections 4n where the value of n is odd and is negative in the sections 4n where the value of n is even. The ratio between the maximum value and the minimum value of the average chromatic dispersions Dn of the sections 4n is at least 1.3 and not greater than 10.0.
摘要翻译：即使进行高速信号传输，也能够抑制光信号波长周围的边带的形成的色散管理的光纤传输线。光纤传输线1构成安装在发射机（或中继器）2和接收机（或中继器）3之间的一个中继器阵列，并且由发射机2到接收机3依次由N个部分41至4N组成。波长1.55μm处的色散在n为奇数的区间4n中为正，在n的值为n的区间4n为负。区间4n的平均色散Dn的最大值和最小值之间的比例为至少1.3且不大于10.0。

3. 发明申请

US20010046358A1 Optical fiber, method of making the same, and optical transmission system including the same 失效
标题翻译：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：US20010046358A1
公开(公告)日：2001-11-29
申请号：US09899020
申请日：2001-07-06
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Eisuke Sasaoka , Masashi Onishi , Katsuya Nagayama , Kaoru Okuno , Kazuya Kuwahara
IPC分类号： G02B006/16
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。

4. 发明申请

US20010028775A1 Optical fiber 有权
标题翻译：光纤
公开(公告)号：US20010028775A1
公开(公告)日：2001-10-11
申请号：US09793415
申请日：2001-02-27
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Takemi Hasegawa , Eisuke Sasaoka , Masayuki Nishimura , Masashi Onishi
IPC分类号： G02B006/22
CPC分类号： G02B6/02333 , C03B37/01231 , C03B37/0253 , C03B37/027 , C03B37/02727 , C03B37/02763 , C03B37/02781 , C03B2203/14 , C03B2203/18 , C03B2203/36 , C03B2203/42 , C03B2205/08 , C03B2205/10 , C03B2205/20 , C03C25/6206 , G02B6/02033 , G02B6/02228 , G02B6/02247 , G02B6/02276 , G02B6/02347 , G02B6/02357 , G02B6/02361 , G02B6/02376 , G02B6/03627
摘要： In an optical fiber composed of a core region and a cladding region surrounding the core region and having a plurality of regions made of sub mediums having refractive indices different from a refractive index of a main medium disposed in a main medium constituting this cladding region, these regions made of the sub mediums are arranged in one given or a plurality of a given circular annular regions and the centers of the regions made of the sub mediums in respective circular annular regions are arranged on the same circumference centered at the center of the core.
摘要翻译：在由芯区域和围绕芯区域的包层区域构成的光纤中，具有由构成该包层区域的主介质的折射率不同于设置在构成该包层区域的主介质的折射率的副介质的多个区域构成的光纤，由副介质制成的区域被布置在一个给定的或多个给定的圆形环形区域中，并且由各个圆形环形区域中的副介质制成的区域的中心布置在以芯的中心为中心的同一圆周上。

5. 发明申请

US20040173584A1 Glass-processing method and glass-processing apparatus for the method 有权
标题翻译：玻璃加工方法和玻璃加工装置的方法
公开(公告)号：US20040173584A1
公开(公告)日：2004-09-09
申请号：US10780716
申请日：2004-02-19
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Masashi Onishi , Masaaki Hirano , Tetsuya Nakanishi
IPC分类号： B23K010/00
CPC分类号： H05H1/30 , C03B23/043 , C03B23/207 , C03B29/02 , C03B37/0124 , C03B37/01815 , C03B37/01823 , Y02P40/57
摘要： A glass-processing method adjusts the range of the heating region according to the work piece and processing condition, and a glass-processing apparatus implements the method. The method incorporates the heating of a glass body with a thermal plasma torch comprising (a) a main body provided with a plurality of ports from which a gas issues and (b) a device for applying a high-frequency electric field to the gas fed into the main body. The method comprises the steps of (1) adjusting the plasma flame's size perpendicular to the center axis of the main body by controlling the flow rate of the gas fed into each port according to the size of the glass body, the processing condition, or both and (2) heating the glass body. The apparatus comprises (a) a thermal plasma torch for heating a glass body, comprising (a1) a main body provided with a plurality of ports from which a gas issues and (a2) a device for applying a high-frequency electric field to the gas fed into the main body and (b) a device for adjusting the flow rate of the gas fed into each port.
摘要翻译：玻璃加工方法根据工件和加工条件调节加热区域的范围，玻璃加工装置实施该方法。该方法包括用热等离子体焰炬加热玻璃体，其包括（a）主体，其设置有多个端口，气体从该端口发出，以及（b）用于将高频电场施加到气体馈送的装置进入主体。该方法包括以下步骤：（1）通过根据玻璃体的尺寸，加工条件或两者来控制进入每个端口的气体的流量来调节垂直于主体的中心轴的等离子体火焰的尺寸和（2）加热玻璃体。该装置包括：（a）用于加热玻璃体的热等离子体焰炬，包括（a1）设置有气体发生的多个端口的主体，以及（a2）用于将高频电场施加到送入主体的气体和（b）用于调节供给到每个端口的气体的流量的装置。

6. 发明申请

US20030215200A1 Dispersion compensation unit and optical communication system 失效
标题翻译：色散补偿单元和光通信系统
公开(公告)号：US20030215200A1
公开(公告)日：2003-11-20
申请号：US10428779
申请日：2003-05-05
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Tomoyuki Yokokawa , Masashi Onishi , Takashi Fujii
IPC分类号： G02B006/26
CPC分类号： G02B6/02261 , G02B6/02019 , G02B6/02271 , G02B6/0228 , G02B6/02285 , G02B6/03644 , G02B6/278 , G02B6/29376 , G02B6/29377 , G02B6/4457 , H01S3/06725 , H04B10/2525
摘要： The present invention relates to a dispersion compensation unit capable of compensating for both the chromatic dispersion and dispersion slope of a non-zero dispersion-shifted optical fiber. The dispersion compensation unit is formed by winding a first optical fiber and second optical fiber into coil shapes and storing them in a case. The first optical fiber has a negative chromatic dispersion D1 and a negative dispersion slope S1 at a wave length in use. The second optical fiber has a positive chromatic dispersion D2 and a positive dispersion slope S2 at the wavelength in use.
摘要翻译：本发明涉及一种能够补偿非零色散位移光纤的色散和色散斜率的色散补偿单元。色散补偿单元通过将第一光纤和第二光纤卷绕成线圈形状并将其存储在壳体中而形成。第一光纤在使用波长处具有负色散D1和负色散斜率S1。第二光纤在使用波长处具有正色散D2和正色散斜率S2。

7. 发明申请

US20030142938A1 Coiled optical assembly and fabricating method for the same 审中-公开
标题翻译：卷绕光学组件及其制造方法
公开(公告)号：US20030142938A1
公开(公告)日：2003-07-31
申请号：US10360722
申请日：2003-02-10
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Yasushi Koyano , Eisuke Sasaoka , Shigeru Tanaka , Kohei Kobayashi , Masashi Onishi
IPC分类号： G02B006/02 , G02B006/16 , G02B006/00
CPC分类号： G02B6/4457 , G02B6/02261 , G02B6/02395 , G02B6/03627 , H01S3/06704
摘要： After a wide-band DCF is wound around a bobbin to form an optical fiber coil 32, the latter is removed from the bobbin and placed into a bundle state (the state where the increase in transmission loss in the wavelength band of 1.55 nullm caused by distortions in winding is reduced by 0.1 dB/km or more) released from distortions in winding. A resin 42 is used as a coil-tidying member so as to secure the optical fiber coil 32 to a storage case 40 at four positions. Both ends of the optical fiber coil 32 are connected to pigtail fibers at fusion-splicing parts 44, respectively. Even when the storage case 40 is closed with a lid after the optical fiber coil 32 is secured to the storage case 40 with the resin 42, there remain interstices within the bundle of the optical fiber coil 32 and a space between the optical fiber coil 32 and the storage case 40. As a result, even when the optical fiber coil 32 in a bundle state is accommodated in the storage case 40, transmission loss and the like would not increase.
摘要翻译：在宽带DCF缠绕在线轴上以形成光纤线圈32之后，将其从线轴上取下并放置成捆状态（由1.55μm的波长带的传输损耗的增加引起的状态绕组失真减少了0.1 dB / km以上）。树脂42用作线圈整理构件，以将光纤线圈32固定在四个位置处的存储盒40上。光纤线圈32的两端分别在熔接部分44处连接到尾纤。即使当光纤线圈32用树脂42固定在存储盒40上之后，当用盖子封闭存储盒40时，在光纤线圈32的束内仍然有空隙，并且光纤线圈32之间的空间结果，即使束状态的光纤线圈32被容纳在收容箱40中，传输损耗等也不会增加。

8. 发明申请

US20030090781A1 Raman amplifier 有权
公开(公告)号：US20030090781A1
公开(公告)日：2003-05-15
申请号：US10286864
申请日：2002-11-04
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Masashi Onishi , Toshiaki Okuno
IPC分类号： H01S003/00
CPC分类号： H01S3/302 , H01S3/06754 , H01S3/094003
摘要： A Raman amplifier applicable to a wavelength division multiplexing optical transmission system is proposed. The Raman amplifier, which can make good use of a wavelength range, comprises an optical fiber for Raman amplification and a pump light introducing means. The zero-dispersion wavelength of the optical fiber and the wavelength of the pump light are nearly equal. The wavelength of pump light is preferably in the range where the absolute magnitude of the chromatic dispersion of the optical fiber is less than 0.3 psnullnmnull1nullkmnull1. A range near a zero-dispersion wavelength cannot be utilized as a signal range because waveform deterioration of signal light occurs due to four wave mixing. This range can be utilized effectively as a wavelength range of exciting light for Raman amplification.

9. 发明申请

US20010010162A1 Method of making optical fiber 审中-公开
标题翻译：制造光纤的方法
公开(公告)号：US20010010162A1
公开(公告)日：2001-08-02
申请号：US09725036
申请日：2000-11-29
申请人： Sumitomo Electric Industries, Ltd.
发明人： Kazuya Kuwahara , Ichiro Tsuchiya , Katsuya Nagayama , Masashi Onishi , Hiroshi Takamizawa
IPC分类号： C03B037/07 , C03B037/075
CPC分类号： G02B6/02247 , C03B37/0253 , C03B2203/06 , C03B2203/18 , C03B2203/36 , C03B2205/40 , G02B6/03627
摘要： When drawing an optical fiber from a preform, positive and negative dispersion sections of an optical fiber are provided, respectively, with target glass diameters different from each other, whereby the positive and negative dispersion sections attain their respective desirable values of chromatic dispersion. Also, the positive and negative dispersion sections and a transient section therebetween are provided, respectively, with values of control constant different from each other, which are used to converge the measured glass diameter to said target diameter, for adjusting the drawing speed, whereby the transient section is shortened. Alternatively, the positive and negative dispersion sections of the optical fiber are provided with respective target drawing speeds different from each other, whereby the transient section is shortened.
摘要翻译：当从预成型件拉制光纤时，分别提供具有彼此不同的目标玻璃直径的光纤的正和负分散部分，由此正和负色散部分达到它们各自期望的色散值。此外，分别提供正和负色散部分和它们之间的瞬态部分，其中控制常数彼此不同，用于将测量的玻璃直径收敛到所述目标直径，用于调整拉伸速度，由此瞬态部分缩短。或者，光纤的正和负色散部分设置有彼此不同的各个目标绘图速度，从而缩短了瞬变部分。

10. 发明申请

US20040231361A1 Method and apparatus for manufacturing glass tube 失效
标题翻译：制造玻璃管的方法和装置
公开(公告)号：US20040231361A1
公开(公告)日：2004-11-25
申请号：US10796052
申请日：2004-03-10
申请人： Sumitomo Electric Industries, Ltd.
发明人： Tomomi Moriya , Masashi Onishi , Kazuyuki Sohma , Masaaki Hirano , Eiji Yanada , Tadashi Enomoto
IPC分类号： C03B023/045
CPC分类号： C03B37/01254 , C03B19/1469 , C03B23/045 , C03B23/0493 , C03B23/0496 , Y02P40/57
摘要： Stress exerted on an inner or outer circumferential side of a glass tube 6 is controlled when a glass material 3 is heated and softened by a heating element 41 provided around the glass material 3 and a piercing plug 31 is relatively pressed into a softened region of the glass material 3 to thereby form the glass material 3 into the glass tube 6 gradually. For example, the control of the stress can be carried out by controlling an internal or external pressure of the glass tube 6. As a result, the deformation of the glass tube 6 just after piercing is prevented so that the glass tube 6 can be obtained with high quality. It is also possible to solve the problem that cracks may occur easily at the time of reheating because of residual stress distribution after cooling.
摘要翻译：当玻璃材料3被设置在玻璃材料3周围的加热元件41加热和软化时，控制施加在玻璃管6的内周侧或外周侧上的应力，并且穿孔塞31被相对地压入到玻璃材料3，从而逐渐将玻璃材料3形成到玻璃管6中。例如，可以通过控制玻璃管6的内部或外部压力来进行应力的控制。结果，防止玻璃管6刚刚穿刺后的变形，从而可以获得玻璃管6 具有高品质。也可以解决由于冷却后的残余应力分布而在再加热时容易发生裂纹的问题。

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