公开(公告)号：EP2692705A1

公开(公告)日：2014-02-05

申请号：EP12864976.1

申请日：2012-12-28

申请人： Sumitomo Electric Industries, Ltd.

发明人： HARUNA, Tetsuya ,  HIRANO, Masaaki ,  TAMURA, Yoshiaki

IPC分类号： C03B37/014 ,  G02B6/00

CPC分类号： C03C25/607 ,  C03B37/01807 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/50 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/26 ,  C03B2207/90 ,  C03C25/104 ,  G02B6/02395 ,  G02B6/03611 ,  G02B6/03627 ,  Y10T428/2964

摘要： A method for making a high quality optical fiber preform, wherein the generation of foreign substance on the inner surface of a glass pipe can be suppressed at the process of carrying out thermal diffusion of an alkali metal element. The method comprises: (1) a thermal diffusion process for thermally defusing the alkali metal element into the inner side of a silica glass pipe by heating the glass pipe from the outside by a heat source while vapors of alkali metal salt generated by heating an alkali metal salt is supplied to the inside of the glass pipe from an end thereof; (2) a collapsing process for forming a core rod by collapsing the glass pipe after the thermal diffusion process; and (3) a process for adding a cladding part around the circumference of the core rod, wherein at the start of the thermal diffusion, the alkali metal salt is heated at a temperature for making the vapor pressure of the alkali metal salt to be 0.1 kPa or less, and thereafter the alkali metal salt is heated up to a temperature for making the vapor pressure of the alkali metal salt to be larger than 0.1 kPa.

摘要翻译： 制造高品质光纤预制件的方法，其中在进行碱金属元素的热扩散的过程中可以抑制在玻璃管的内表面上产生杂质。 该方法包括：（1）通过热源将来自外部的玻璃管加热，将碱金属元素热分解成石英玻璃管的内侧的热扩散过程，同时通过加热碱产生碱金属盐的蒸气 金属盐从其一端供应到玻璃管的内部; （2）在热扩散处理之后通过使玻璃管折叠而形成芯棒的塌缩处理; （3）在芯棒的周围添加包覆部的工序，其中在热扩散开始时，碱金属盐在使碱金属盐的蒸气压为0.1的温度下被加热 kPa以下，然后将碱金属盐加热到使碱金属盐的蒸气压大于0.1kPa的温度。

公开(公告)号：EP1805537A4

公开(公告)日：2008-11-19

申请号：EP05857962

申请日：2005-10-19

申请人： CORNING INC

发明人： BERKEY GEORGE E ,  CHEN XIN ,  LI MING-JUN ,  NOLAN DANIEL A ,  WALTON DONNELL T ,  WANG JI ,  ZENTENO LUIS A ,  KOH JOOHYUN

IPC分类号： G02B6/02 ,  C03B37/023

CPC分类号： H01S3/06716 ,  C03B37/01234 ,  C03B37/0124 ,  C03B37/01413 ,  C03B37/01446 ,  C03B2201/12 ,  C03B2201/14 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/36 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/23 ,  C03B2205/10 ,  C03B2207/90 ,  G02B6/023 ,  G02B6/02338 ,  G02B6/02366 ,  G02B6/024 ,  G02B6/03611 ,  G02B6/0365 ,  G02B6/03666 ,  G02B2006/1208 ,  H01S3/06729 ,  H01S3/1618 ,  H01S3/1695

摘要： An optical fiber including: (i) a silica based, rare earth doped core (12) having a first index of refraction n1; (ii) a silica based inner cladding (14) surrounding the core and having a second index of refraction n2, such that n1>n2, the inner cladding having a plurality of air holes (24, 26) extending longitudinally through the length of the optical fiber; (iii) a silica based outer cladding (16) surrounding the inner cladding and having a third index of refraction n3, such that n2>n3; wherein the optical fiber supports a single polarization mode within the operating wavelength range.

公开(公告)号：EP1016636A1

公开(公告)日：2000-07-05

申请号：EP99125712.2

申请日：1999-12-23

申请人： Hoya Corporation

发明人： Tanaka, Akiyoshi

IPC分类号： C03B37/018

CPC分类号： C03B37/01838 ,  C03B2201/30 ,  C03B2201/34 ,  C03B2201/40 ,  C03B2201/50 ,  C03B2201/54 ,  C03B2207/90

摘要： A method for manufacturing optical fiber preform comprising a core glass containing a light emitting substance (e.g. rare earth metal dopant) and a cladding glass, easily controlling an amount of the light emitting substance incorporated into the core glass without requiring any complicated step, includes the steps of forming a porous layer made of a precursor of the core glass on an inner surface of a hollow tube having an inner surface made of the cladding glass, spraying a medium containing the light emitting substance onto the porous layer, forming a layer of the core glass containing the light emitting substance by sintering the porous layer containing the light emitting substance, and forming a preform rod by collapsing the obtained hollow tube into a solid article. Alternatively, another method according to the invention includes the steps of spraying a medium containing a precursor of the core glass on the inner surface of the hollow tube, forming the core glass layer by sintering the formed precursor layer, and forming a preform rod by collapsing the obtained hollow tube into a solid article. A third method comprises spraying sequentially core-forming material and light emitting substance and a fourth method simultaneous spraying of both. An optical fiber can be formed by drawing the thus obtained optical fiber preforms.

摘要翻译： 一种用于制造光纤预制件，其包括一个芯玻璃包含发光物质（例如稀土金属掺杂剂）和包层玻璃，容易地控制掺入到芯玻璃中的发光物质的量，而不需要任何复杂的步骤的方法，包括 形成由芯玻璃的前体的多孔层的步骤上的具有由包层玻璃的内表面上的中空管，喷涂含有轻到多孔层的发光物质的介质中，形成的一个层内表面 芯玻璃通过烧结包含发光物质的多孔层，并且通过折叠所述中空管获得成固体制品形成预制棒包含发光物质。 可替代地，雅丁本发明的另一方法包括喷涂含中空管的内表面上的芯玻璃的前体的培养基中，通过烧结所形成的前体层形成芯玻璃层，并通过折叠形成预制棒的步骤 得到的中空管成固体制品。 第三种方法包括喷涂依次形成芯的材料和发光物质和二者的第四方法同时喷雾。 光纤可通过拉伸如此获得的光纤预制件来形成。

公开(公告)号：EP0561371B1

公开(公告)日：1997-02-05

申请号：EP93104338.4

申请日：1993-03-17

申请人： SUMITOMO ELECTRIC INDUSTRIES, LIMITED

发明人： Ishikawa, Shinji, c/o Yokohama Works ,  Urano, Akira, c/o Yokohama Works ,  Aikawa, Haruhiko, c/o Yokohama Works ,  Hirose, Chizai, c/o Yokohama Works ,  Kanamori, Hiroo, c/o Yokohama Works ,  Saitoh, Masahide, c/o Yokohama Works

IPC分类号： C03C17/02 ,  C03C3/06 ,  C03B19/14 ,  G02B6/12

CPC分类号： C03B19/1453 ,  C03B19/14 ,  C03B19/1415 ,  C03B2207/90 ,  C03C17/001 ,  C03C17/02 ,  C23C14/10 ,  C23C16/44 ,  C23C16/453

公开(公告)号：EP0561371A2

公开(公告)日：1993-09-22

申请号：EP93104338.4

申请日：1993-03-17

申请人： SUMITOMO ELECTRIC INDUSTRIES, LIMITED

发明人： Ishikawa, Shinji, c/o Yokohama Works ,  Urano, Akira, c/o Yokohama Works ,  Aikawa, Haruhiko, c/o Yokohama Works ,  Hirose, Chizai, c/o Yokohama Works ,  Kanamori, Hiroo, c/o Yokohama Works ,  Saitoh, Masahide, c/o Yokohama Works

IPC分类号： C03C17/02 ,  C03C3/06 ,  C03B19/14 ,  G02B6/12

CPC分类号： C03B19/1453 ,  C03B19/14 ,  C03B19/1415 ,  C03B2207/90 ,  C03C17/001 ,  C03C17/02 ,  C23C14/10 ,  C23C16/44 ,  C23C16/453

摘要： A method of producing an oxide glass thin film includes a process to obtain a transparent glass film, in which volatilization of additives in a porous film deposited is effectively suppressed and which can provide an oxide glass thin film having a desired arrangement of refractive index with a low optical loss. The method is for producing an oxide glass thin film, in which glass fine particles mainly containing SiO₂ with additives are deposited on a substrate to form a porous thin film and then heated to form a transparent glass film. In the method, vapor of oxides of additive components is mixed in an atmosphere in which the porous thin film is heated to form the transparent glass film, whereby stopping the volatilization of the additives in the porous film deposited, preventing diffusion of the additives added to a core layer, and preventing the volatilization of glass transition temperature lowering components of additives (P₂O₅, B₂O₃, GeO₂, etc.). By these, a desired arrangement of refractive index may be obtained, and an oxide glass thin film may be obtained while lowering the optical loss such as the optical scattering, which could be caused by bubbles in an unsintered portion.

摘要翻译： 制造氧化物玻璃薄膜的方法包括获得透明玻璃膜的方法，其中沉积的多孔膜中的添加剂的挥发被有效地抑制，并且可以提供具有期望的折射率布置的氧化物玻璃薄膜 光损耗低。 该方法用于生产氧化物玻璃薄膜，其中主要含有SiO 2的玻璃微粒子与添加剂沉积在基底上以形成多孔薄膜，然后加热形成透明玻璃膜。 在该方法中，将添加成分的氧化物蒸气在加热多孔薄膜的气氛中混合，形成透明玻璃膜，由此停止多孔膜中的添加剂的挥发，防止添加添加剂的扩散 核心层，并且防止添加剂（P 2 O 5，B 2 O 3，GeO 2等）的玻璃化转变温度降低成分的挥发。 通过这些，可以获得期望的折射率布置，并且可以在降低可能由未烧结部分中的气泡引起的光学散射等光损耗的同时获得氧化物玻璃薄膜。

公开(公告)号：EP0331483A3

公开(公告)日：1990-08-16

申请号：EP89302073.5

申请日：1989-03-02

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Fujiura, Kazuo ,  Ohishi, Yasutake ,  Fujiki, Michiya ,  Kanamori, Terutoshi ,  Takahashi, Shiro

IPC分类号： C03C1/00 ,  C03C13/04 ,  C03C3/32 ,  C03B37/018

CPC分类号： C03B37/01807 ,  C03B19/1415 ,  C03B19/1476 ,  C03B37/01815 ,  C03B37/01861 ,  C03B2201/82 ,  C03B2207/30 ,  C03B2207/81 ,  C03B2207/90 ,  C03C1/00 ,  C03C3/325 ,  C03C13/042 ,  Y10S65/16

摘要： Provided is a process for preparing a homogenous fluoride glass containing high purity BaF₂ through the CVD process characterized in that the used gaseous mixture comprising: a barium β-diketonate complex serving as a first starting material and represented by the following general formula (1) of:
wherein R is an alkyl group having 1 to 7 carbon atoms, R′ is a substituted alkyl group having fluorine atoms substituting hydrogen atoms and represented by C n F 2n+1 where n is an integer of from 1 to 3; and
a gaseous or vaporizable compound of the matallic element constituting said fluoride glass, the gaseous or vaporizable compound serving as a second starting material; and a fluorine-containing gas serving as fluorinating agent. Further provided is a process for preparing a preform for a fluoride optical fiber which is low in trasmission loss, by depositing the fluoride glass over the interior wall of a cylindrical tube or the wall of rod-like glass substrate through the CVD process followed by collapsing.

公开(公告)号：EP0223853A1

公开(公告)日：1987-06-03

申请号：EP86904479.0

申请日：1986-04-23

申请人： Hughes Aircraft Company

发明人： BLAIR, Richard, G.

IPC分类号： G02B6 ,  C03B37 ,  C03C1 ,  C03C13

CPC分类号： C03C13/045 ,  C03B37/01807 ,  C03B2201/34 ,  C03B2207/81 ,  C03B2207/87 ,  C03B2207/90 ,  C03C1/00

摘要： Procédé permettant d'incorporer un dopant métallique dans le noyau de silice dopé d'une ébauche de fibres optiques, le composé précurseur du dopant étant un chélate métallique possédant une pression de vapeur suffisamment élevée, ce chélate pouvant être volatilisé à des températures relativement faibles (par exemple, entre 100o et 250oC), et pouvant être aisément incorporé dans les courants gazeux du composé précurseur de noyau utilisé normalement pour le dépôt du noyau dopé, ce chélate métallique étant dérivé d'un ligant de beta-dicetone fluoré de formule le générale (I), où R, R1 et R2 sont des groupes alkyle perfluorés composés de 1 à 7 atomes de carbone ou des groupes aryle perfluorés.

公开(公告)号：EP0081282B1

公开(公告)日：1986-05-28

申请号：EP82305052.1

申请日：1982-09-24

申请人： Corning Glass Works

发明人： Miller, Stephen Bruce ,  Schultz, Peter Charles

IPC分类号： C03B37/025

CPC分类号： C03B37/01861 ,  C03B37/014 ,  C03B37/0142 ,  C03B37/01807 ,  C03B2201/70 ,  C03B2201/82 ,  C03B2201/84 ,  C03B2207/06 ,  C03B2207/28 ,  C03B2207/30 ,  C03B2207/50 ,  C03B2207/85 ,  C03B2207/90 ,  Y10S65/16

公开(公告)号：EP0040540A3

公开(公告)日：1982-06-30

申请号：EP81302204

申请日：1981-05-19

申请人： J.C. SCHUMACHER COMPANY

发明人： McMenamin, Joseph C.

IPC分类号： G05D07/06 ,  G05D11/00 ,  G01F01/68

CPC分类号： C03B37/01413 ,  B01J4/008 ,  C03B2207/86 ,  C03B2207/87 ,  C03B2207/88 ,  C03B2207/89 ,  C03B2207/90 ,  C23C16/52 ,  G01F1/68 ,  G05D7/0635

摘要： The previous methods of controlling the flow of vapor transported by a carrier gas from a bubbler (10) to a using system have customarily been the thermal-conductivity mass flow meter and the temperature controlled vaporizer bubbler (10). However, such control methods have the disadvantage that fluctuations occur in the vapor mass flow. In accordance with the present invention the flow of vapor transported by a carrier gas from a bubbler (10) to a using system is controlled to provide on uninterrupted uniform mass flow ofthevaporto the using system. Control of the flow of vapor is achieved by controlling the temperature (48) and pressure (50) within the bubbler (10).