公开(公告)号：JP2014067020A

公开(公告)日：2014-04-17

申请号：JP2013181117

申请日：2013-09-02

Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

Inventor： HIRANO MASAAKI ,  HARUNA TETSUYA ,  TAMURA YASUAKI ,  YAMAMOTO YOSHINORI

IPC: G02B6/02

CPC classification number: G02B6/02014 ,  G02B6/02019 ,  G02B6/02266 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/0365

Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber suitable for high density assembly and long distance transmission.SOLUTION: The optical fiber of the present invention is an optical fiber including a core part and a cladding part, and has, at a wavelength of 1550 nm, an effective cross section Aeff of 100 μmor less, a wavelength dispersion Disp of +19.0 ps/nm/km or more and +22 ps/nm/km or less, and a performance index FOM of +3.2 dB or more represented by a formula FOM=5 log{|Disp|*Leff}-10 log{Leff/Aeff}-100α where a Leff represents effective length and α represents transmission loss.

Abstract translation: 要解决的问题：提供适合于高密度组装和长距离传输的光纤。解决方案：本发明的光纤是包括芯部分和包层部分的光纤，并且在波长1550 nm，有效截面Aeff为100μm以下，波长色散Disp为+19.0ps / nm / km以上，+ 22ps / nm / km以下，性能指数FOM为+3.2dB以上，以 公式FOM = 5 log {| Disp | * Leff} -10 log {Leff / Aeff}-100α其中Leff表示有效长度，α表示传输损耗。

公开(公告)号：JP2012229150A

公开(公告)日：2012-11-22

申请号：JP2012003331

申请日：2012-01-11

Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

Inventor： HIRANO MASAAKI ,  HARUNA TETSUYA ,  TAMURA YOSHIAKI

IPC: C03C13/04 ,  G02B6/00

CPC classification number: G02B6/03644 ,  C03B37/01211 ,  C03B37/01228 ,  C03B37/0124 ,  C03B37/014 ,  C03B37/01807 ,  C03B37/01861 ,  C03B37/01869 ,  C03B37/027 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/50 ,  C03B2203/22 ,  C03C13/045 ,  G02B6/02 ,  G02B6/02042 ,  G02B6/03605 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/0365

Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber with less transmission loss and excellent radiationproof property.SOLUTION: A core portion of an optical fiber preform has a first core portion including a central axis, a second core portion disposed around the first core portion, and a third core portion disposed around the second core portion. The first core portion contains 10 atomic ppm or more of an alkali metal and 10 to 600 atomic ppm of chlorine, the second core portion contains 10 atomic ppm or less of the alkali metal and 10 to 600 atomic ppm of chlorine, and the third core portion contains 10 atomic ppm or less of the alkali metal and 2,000 atomic ppm or more of chlorine. An optical fiber has a core region doped with an alkali metal and chlorine, wherein the minimum concentration of chlorine in the core region is 1,000 atomic ppm or more, and the average concentration of the alkali metal therein in the core regions is 0.2 atomic ppm or more.

Abstract translation: 要解决的问题：提供具有较少传输损耗和优异防辐射性能的光纤。 解决方案：光纤预制棒的芯部分具有包括中心轴的第一芯部分，围绕第一芯部分设置的第二芯部分和围绕第二芯部分设置的第三芯部分。 第一核心部分含有10原子ppm以上的碱金属和10〜600原子ppm的氯，第二核部分含有10原子ppm以下的碱金属和10〜600原子ppm的氯，第三核 部分含有10原子ppm以下的碱金属和2,000原子ppm以上的氯。 光纤具有掺杂有碱金属和氯的芯区域，其中芯区域中的氯的最小浓度为1,000原子ppm以上，核区域中的碱金属的平均浓度为0.2原子ppm， 更多。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012044224A

公开(公告)日：2012-03-01

申请号：JP2011259161

申请日：2011-11-28

Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

Inventor： KAKUI MOTOKI ,  HARUNA TETSUYA

IPC: H01S3/06 ,  H01S3/23

Abstract: PROBLEM TO BE SOLVED: To provide a practical optical amplifier having high gain, and to provide a laser beam source device.SOLUTION: An optical fiber which is composed of a quartz based glass as a main component and added with Yb ions in at least a part of a core region, is used as each of a first optical amplifying waveguide 41 and a second optical amplifying waveguide 42. The first optical amplifying waveguide 41 is excited by excitation beams wave-guiding the core region and optically amplifies and outputs the beams input at an input end. The second optical amplifying waveguide 42 is excited by the excitation beams wave-guiding the core region and a first clad region, and inputs, optically amplifies, and outputs the beams optically amplified in the first optical amplifying waveguide 41.

Abstract translation: 要解决的问题：提供具有高增益的实用光放大器，并提供激光束源装置。 解决方案：将由石英基玻璃作为主要成分并在至少一部分核心区域中添加Yb离子的光纤用作第一光学放大波导41和第二光学放大波导 放大波导42.第一光放大波导41由激发光束激发，对激发光束进行波导，并光学放大并输出在输入端输入的光束。 第二光放大波导42被激发光束激励，该激发束对芯区和第一包层区进行波导，并输入光学放大并输出在第一光放大波导41中被光放大的光束。 C）2012，JPO＆INPIT

公开(公告)号：JP2012020908A

公开(公告)日：2012-02-02

申请号：JP2010160966

申请日：2010-07-15

Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

Inventor： HARUNA TETSUYA ,  HIRANO MASAAKI ,  HIKICHI NOBUHIRO

IPC: C03B37/027 ,  G02B6/02 ,  G02B6/036

CPC classification number: G02B6/03627 ,  C03B37/02727 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/23 ,  C03B2205/40 ,  G02B6/0281 ,  G02B6/03655

Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber having a large relative refractive index difference and a reduced transmission loss, and to provide a method for producing the same.SOLUTION: An optical fiber preform 100, which is made of silica glass as the main component and which includes a core region having a relative refractive index difference of 2.0% or more and less than 3.0% on the basis of the refractive index of pure silica glass and a first cladding region provided around the core region and having a relative refractive index difference of -0.8% or more and less than -0.3% on the basis of the refractive index of pure silica glass, is drawn into a glass fiber. The glass fiber thus drawn is passed through an annealing furnace 21 installed below a drawing furnace 11, whereby the cooling rate of the glass fiber is reduced as compared with the case where it is cooled by air. As a result, the randomness of the bonds of atoms in glass is reduced to allow Rayleigh scattering to be suppressed. Therefore, even in the case where the relative index difference is increased, the transmission loss of the optical fiber can be reduced.

Abstract translation: 要解决的问题：提供一种相对折射率差大且传输损失减少的光纤，并提供一种制造该光纤的方法。 解决方案：一种由石英玻璃作为主要成分制成的光纤预制件100，其基于折射率包括相对折射率差为2.0％以上且小于3.0％的芯区域 的纯二氧化硅玻璃和设置在芯部区域周围的基于纯石英玻璃的折射率为-0.8％以上且小于-0.3％的相对折射率差的第一包层区域被拉伸成玻璃 纤维。 将如此拉伸的玻璃纤维通过安装在拉丝炉11下方的退火炉21，由此与通过空气冷却的情况相比，玻璃纤维的冷却速度降低。 结果，玻璃中的原子键的随机性被降低以允许抑制瑞利散射。 因此，即使在相对折射率差增加的情况下，也可以减小光纤的传输损耗。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2007063095A

公开(公告)日：2007-03-15

申请号：JP2005253893

申请日：2005-09-01

Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

Inventor： HARUNA TETSUYA ,  TARU TOSHIKI ,  KAKUI MOTOKI ,  ONISHI MASASHI

IPC: C03B8/04 ,  C03B37/014 ,  C03B37/018

CPC classification number: C03B37/018 ,  C03B37/01853 ,  C03B37/01869 ,  C03B2201/30 ,  C03B2201/32 ,  C03B2207/32

Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a glass body which is used for the manufacture of an optical fiber having small background loss and in which bismuth is added and the optical fiber made from the glass body manufactured by the manufacturing method.
SOLUTION: The glass body manufacturing method is provided with a deposition step S1, a sintering step S2, a diameter reducing step S3 and a collapsing step S4. The glass body manufacturing method is carried out by forming a glass fine particle layer 31 on the inner wall surface 10a of a glass pipe 10 using a MCVD method (deposition step) and after that, sintering the glass fine particle layer to form a glass layer 32 (sintering step), reducing the diameter of the glass pipe having the glass layer formed on the inner wall surface 10a (diameter reducing step) and collapsing the glass pipe having reduced diameter. In the deposition step, the glass fine particle layer is formed with the supply of an organic bismuth compound into the glass pipe and in the sintering step, the glass layer is formed while the organic bismuth compound is supplied into the glass pipe.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 解决的问题：提供一种制造玻璃体的方法，该玻璃体用于制造背景损耗小的光纤，并且添加有铋的玻璃体和由制造的玻璃体制成的光纤 方法。 解决方案：玻璃体制造方法具有沉积步骤S1，烧结步骤S2，直径减小步骤S3和折叠步骤S4。 玻璃体制造方法通过使用MCVD法（沉积步骤）在玻璃管10的内壁表面10a上形成玻璃微粒层31进行，然后烧结玻璃微粒层以形成玻璃层 32（烧结步骤），减小在内壁表面10a上形成的玻璃层的玻璃管的直径（直径减小步骤），并且缩小直径减小的玻璃管。 在沉积步骤中，通过向玻璃管中供应有机铋化合物形成玻璃微粒层，并且在烧结步骤中，在将有机铋化合物供应到玻璃管中的同时形成玻璃层。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2004083399A

公开(公告)日：2004-03-18

申请号：JP2003189835

申请日：2003-07-01

Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

Inventor： HARUNA TETSUYA ,  TAKAGI MASAHIRO

IPC: G02B6/00 ,  C03B37/018

CPC classification number: C03B37/01807 ,  C03B37/01838 ,  Y02P40/57

Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a preform for an optical fiber, to the core of which rare-earth elements etc. are added, and the optical fiber used for optical communication using the preform. SOLUTION: In a method comprising a depositing process where a glass microparticle layer is formed by depositing glass microparticles inside a quartz glass tube, a solution impregnating process where the glass microparticle layer is impregnated with a solution containing additives, a transparentizing process where the glass microparticle layer is transparentized after a drying process, and a process where the quartz glass tube is collapsed and a preform is formed, the glass microparticle layer deposited in the depositing process is made ≥2 layers and the thickness of each layer is COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2013032241A

公开(公告)日：2013-02-14

申请号：JP2011168706

申请日：2011-08-01

Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

Inventor： HARUNA TETSUYA ,  HIRANO MASAAKI ,  TAMURA YOSHIAKI

IPC: C03B37/012 ,  C03B37/018 ,  C03C13/04

CPC classification number: C03B37/01807 ,  C03B37/01211 ,  C03B37/014 ,  C03B2201/20 ,  C03B2201/50 ,  C03B2203/22 ,  C03C13/04 ,  G02B6/02014 ,  G02B6/02242 ,  G02B6/02266 ,  G02B6/03627

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing an optical fiber preform that is suitable for producing a low attenuation optical fiber with high yield.SOLUTION: The method for manufacturing an optical fiber preform comprises a step of preparing a core rod and a step of adding a cladding region. At the step of preparing a core rod, the core rod is produced including a first core region 21 with a Cl concentration of less than 600 atomic ppm, a second core region 22 with a Cl concentration of less than 600 atomic ppm around the first core region, and a third core region 23 with a Cl concentration of 3,000 atomic ppm or more around the second core region, wherein an alkali metal is selectively added to the first core region among the first, second, and third core regions. At the step of adding a cladding region around the core rod, a cladding region 30 is formed around the core rod by heating at a temperature of 1,200°C, or higher for 7 hours or less.

Abstract translation: 要解决的问题：提供一种适用于以高产率生产低衰减光纤的光纤预制棒的制造方法。 解决方案：制造光纤预制棒的方法包括制备芯棒的步骤和添加包层区域的步骤。 在制备芯棒的步骤中，制造芯棒，其包括Cl浓度小于600原子ppm的第一芯区域21，第一芯体周围的Cl浓度小于600原子ppm的第二芯区域22 以及围绕第二芯区域的Cl浓度为3000原子ppm以上的第三核心区域23，其中在第一，第二和第三核心区域中的第一核心区域选择性地添加碱金属。 在芯棒周围添加包层区域的步骤中，通过在1200℃以上的温度加热7小时以下，在芯棒周围形成包层区域30。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012162443A

公开(公告)日：2012-08-30

申请号：JP2011137372

申请日：2011-06-21

Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

Inventor： HIRANO MASAAKI ,  HARUNA TETSUYA ,  TAMURA YOSHIAKI

IPC: C03B37/012 ,  C03B20/00 ,  C03C13/04 ,  G02B6/00

CPC classification number: C03B37/01807 ,  C03B2201/50

Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber preform from which an optical fiber added in the core region with an alkaline metal and having a low transmission loss can be manufactured in a high yield.SOLUTION: A method for manufacturing an optical fiber preform includes an alkaline metal addition step of adding an alkaline metal to a pipe composed of a quartz-based glass, an oxygen molecule addition step of adding oxygen molecules to the glass pipe, and a solid-rendering step of heating and rendering the glass pipe solid. In the optical fiber preform, the core part contains an alkaline metal-added core glass part in which an alkaline metal is added, and the maximum concentration of the oxygen molecule in the core part is ≥30 mol-ppb, and the average value of the concentration of the alkaline metal in the core part is ≥5 atom-ppm.

Abstract translation: 要解决的问题：提供一种可以以高产率制造光纤预制件，由此可以以高产率制造在核心区域中加入碱金属并具有低传输损耗的光纤。 解决方案：一种光纤预制棒的制造方法，其特征在于，在由石英系玻璃构成的管中添加碱金属，将氧分子添加到玻璃管中的氧分子添加工序， 将玻璃管固体加热和再现的固体渲染步骤。 在光纤预制体中，核心部分含有碱金属添加的核心玻璃部分，其中添加碱金属，核心部分中的氧分子的最大浓度为≥30mol-ppb，平均值 核心部分中碱金属的浓度为≥5原子ppm。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2009167049A

公开(公告)日：2009-07-30

申请号：JP2008006074

申请日：2008-01-15

Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

Inventor： HARUNA TETSUYA ,  ISHIKAWA MANABU

IPC: C03B37/018 ,  H01S3/06 ,  H01S3/10

CPC classification number: C03C3/06 ,  C03B37/01807 ,  C03B37/01853 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/28 ,  C03B2201/36 ,  C03C4/12 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/28 ,  C03C2201/36 ,  C03C2203/44 ,  H01S3/06716 ,  H01S3/176

Abstract: PROBLEM TO BE SOLVED: To provide a producing method and the like of a preform where the preform to produce a low-loss optical fiber added with a rare earth element and a P element can be produced efficiently. SOLUTION: The producing method of the preform comprises a first step to deposit glass containing P 2 O 5 on the inside wall of a quartz pipe and a second step to introduce a gas containing Cl 2 in the quartz pipe and to dehydrate the glass containing P 2 O 5 by heating the quartz pipe. The preform added with the rare earth element at a core part is produced by performing the first step and the second step alternately and repeatedly. In the producing method of the preform comprising further a third step to deposit glass not containing P 2 O 5 on the inside wall of the quartz pipe, it is favorable that the first step, the second step and the third step are performed repeatedly in this order and that glass containing the rare earth element and not containing P 2 O 5 is deposited on the inside wall of the quartz pipe in the third step. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了提供预成型件的制造方法等，可以有效地制造预成型体，以生产添加有稀土元素和P元素的低损耗光纤。 解决方案：预型件的制造方法包括在石英管的内壁上沉积含有P O 5 的玻璃的第一步骤，并将第二步骤 在石英管中引入含有Cl 2 的气体，并通过加热石英管使含有P 2 O 5 的玻璃脱水。 在核心部分添加有稀土元素的预成型件通过交替地重复地进行第一步骤和第二步骤来制造。 在预成形坯的制造方法中，还具有在石英管的内壁上沉积不含P O 5 的玻璃的第三工序，所以优选的是， 步骤，第二步骤和第三步骤按顺序重复进行，并且含有稀土元素并且不含P O 5 的玻璃沉积在内壁上 的石英管在第三步。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008180650A

公开(公告)日：2008-08-07

申请号：JP2007015373

申请日：2007-01-25

Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

Inventor： TANAKA MASATO ,  NAKANISHI TETSUYA ,  HARUNA TETSUYA ,  HIRANO MASAAKI ,  OKUNO TOSHIAKI ,  SASAKI TAKASHI ,  ONISHI MASASHI

IPC: G01N21/01 ,  G01J3/10 ,  G01N21/27 ,  G02B6/04 ,  G02B6/12 ,  G02B6/32 ,  G02B27/09 ,  G02B27/48 ,  G02F1/01 ,  G02F1/035 ,  G02F1/09 ,  G02F1/365 ,  H01S3/00

CPC classification number: G01J3/10 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/0229 ,  G01J3/0297 ,  G01J3/06 ,  G01J3/14 ,  G01J3/1895 ,  G01J3/26 ,  G01J3/433 ,  G01J2003/065

Abstract: PROBLEM TO BE SOLVED: To provide a light source unit and a spectrum analyzer capable of reducing the influence due to the interference in wavelength component on analysis, or the like. SOLUTION: This spectrum analyzer 1 comprises the light source unit 2 for emitting light onto a sample A; a detector 3 for detecting light reflected, transmitted, or scattered from the sample A; and a sample mounting section 4 for mounting the sample A. The light source unit 2 comprises a wide-band light source 20 and a light irradiation section 23. The wide-band light source 20 generates wide-band light P1 such as super-continuum light (SC light). The light source unit 2 has an interference suppressing means for suppressing interference in each wavelength component of the wide-band light P1. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供能够减少由于分析时的波长分量的干扰引起的影响的光源单元和频谱分析仪等。 解决方案：该频谱分析仪1包括用于将光发射到样品A上的光源单元2; 用于检测从样品A反射，透射或散射的光的检测器3; 以及用于安装样本A的样本安装部分4.光源单元2包括宽带光源20和光照射部分23.宽带光源20产生诸如超连续体的宽带光P1 光（SC灯）。 光源单元2具有用于抑制宽带光P1的每个波长分量中的干扰的干扰抑制装置。 版权所有（C）2008，JPO＆INPIT