• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In forming an optical waveguide, a method of passing a hydrogen free vapor containing a compound consisting of C,N,O,S, or Se and at least one halogen therewith between a silica core and spaced cladding material prior to heat fusing said core and cladding material together.
    公开号:SU963459A3
    申请号:SU792842706
    申请日:1979-11-19
    公开日:1982-09-30
    发明作者:Кобаяси Риудзи；Вакабаяси Куниаки
    申请人:Мицубиси Кинзоку Кабусики Кайся (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a method for producing materials for optical waveguides (optical fibers) in which the attenuation of a light wave is very small. The prior art method is a rod in a tube as a typical method for producing materials for optical waveguides, which involves placing a quartz glass rod (core material) in a quartz glass tube (cladding material), fusing the core material and cladding material by heating and drawing (molding) fused together core material and cladding material t1J. However, this method has the disadvantage that the glass fiber thus obtained is characterized by a strong attenuation of light, since the boundary (the inner surface) formed during the fusion of the core material and the cladding material tends to include air bubbles and impurities. In order to eliminate this disadvantage, by reincorporating the core material into the cladding material, these two materials are mechanically and mechanically polished or mechanically chemically polished to clean their surfaces, for example, in a dust free room, but the problem is that the core materials and the cladding material thus treated are again exposed to air during further processing, and thus it is impossible to avoid repeated ingress of contaminating materials on the surface of the material and the core and cladding material. The purpose of the invention is to reduce the attenuation of light in a waveguide by improving the state of the boundary between the material of the rod and tube. This goal is achieved by the fact that in the method of obtaining a preform for an optical waveguide by introducing a quartz glass core containing 1.2–4% L into a quartz glass tube, feeding the reagent into the gap between them, heat treatment and stretching, supply of vapors of a reagent selected from the group СГл, СП,, CRrj, CCliFi, SFfc, SCl4, SOFa, SOCl, j., SeFg, SeCb, Se, Br. , SeOFa, SOBrj, .. Said reagent, passed in vapor form through the gap between the cladding material (tube) and core material (rod) inserted into the first, before and fusing together, acts as a vapor-phase processing agent at elevated temperature and emits contaminants present on the inner surfaces of the core material and the cladding material in the form of lightly volatile halides, thereby improving the state of the boundary (interface) formed by the fusion of the two materials, and thus significantly reduces the attenuation of light in the thus obtained fiberglass. These vapor-phase treating agents can also be used with a gas carrier such as N, He, etc. If an agent containing fluorine is used as a steam processing agent, it removes any contaminants on the surface of the core material and cladding material in the form of highly volatile fluorides, as indicated above, and at the same time releases the newly cleaned surface of the core material. and a cladding material to act as a disconnecting compound. The compound indicated as a vapor-phase treating agent should not contain hydrogen, since hydrogen penetrates quartz glass as an impurity and worsens the state of the interface between the core material and the cladding material. The core of anhydrous silica glass with the addition of A1, ..., obtained by the plasma method, is mechanically polished to a rod with a diameter of 10 mm (core material). The material is sequentially purified with trichloroethyl, methanol, distilled water and 10% HF solution, and again with distilled water, and then dried in a vacuum oven. At the same time, a clean quartz glass tube for the cladding material is cleaned in the same way as the core material and then installed on a glass processing machine. The core material is inserted into the cladding material and heated to SOO-IGOO C using an electric resistance furnace, an oxygen-hydrogen flame, and so on. So, when heated to the desired temperature, before fusing the core material and the cladding material, these two materials are subjected to vapor-phase processing by passing the CC1 in vapor state with gaseous Ng through the gap between these two materials. The contaminants present on the inner surface of the cladding material and on the surface of the core material interact with the SS and are removed in the form of volatile chlorides. Materials subjected to such vapor-phase processing are immediately fused, raising the temperature, avoiding exposure to air and re-contamination, and then co-stretched. Such a base is obtained for cooking for optical waveguides, in which light diminishes extremely little, i.e., materials in which the losses are extremely small, both due to the scattering of light and due to its absorption. As mentioned earlier, the vapor-phase treatment temperature is in the range of 500–1600 ° C. If it is below 500 ° C, the removal of impurities occurs very slowly, and if it does not exceed, the quartz glass is softened and deformed noticeably, making it difficult manufacturing process. Even within the specified interval of 500-1 ° C ° when the temperature exceeds 1200 ° C, the glass is already prone to deformation. Therefore, when heating the core material and the cladding material, it is preferable to move the local heating zone along the length direction of the cladding material into which the core material is inserted, at a constant speed of its rotation, rather than uniformly heating the cladding material along its entire length. Example 1. A high-purity synthetic quartz glass rod containing 4% is mechanically polished and then cleaned by ultrasonic treatment successively in perchlorethylene, methanol, distilled water, 10% HF solution, again in distilled water, and then dried with an electric dryer. . A 10 mm diameter rod thus obtained is inserted into a high purity synthetic quartz glass tube (inner, diameter 15 GF1, outer diameter 19 mm), which is cleaned in the same way as a silica glass core. Then a gas mixture consisting of CC1d, as a vapor-phase treating agent (500 ml / min) and gaseous (0.4 l / min) as a carrier, is passed through the gap between the tube and the rod and at the same time along the tube moves the local heating zone with temperature (oxygen-oxygen flame) 20 times more at a speed of 10 cm / min in the direction of flow of the gas mixture being blown. The gas mixture is then replaced with gaseous 0 and the heating is again continued 10 times to remove the carbonaceous materials deposited in the gap as a result of the thermal decomposition of the excess CCl. Thereafter, the supply of gaseous O is stopped and the tube and rod are fused by further increasing the temperature to stretch the fused tube and rod into an optical fiber with a core diameter of 120 µm in the usual way. The measured light attenuation in the thus obtained glass fiber is 3.9 dB / km at a wavelength of 0.8 µm. When the above CCl vapor-phase treatment is not carried out, the light attenuation in the fiber obtained with this fiber is 11.2 dB / km for a wavelength of 0.8 µm.
    Example 2. A rod of high-purity quartz glass containing 1.2% A is mechanically polished and washed in the same manner as in Example 1, and then sold at 120 s in an electric dryer. This rod is inserted into a quartz glass tube, the cladding layer of which has the BCl-j additive, created on its inner surface by vapor-phase reaction, the refractive index of the specified cladding layer pp 1.4515 and its thickness 0.5 mm. Then, through the gap between the tube and the prop rod: the mixture of gases consisting of SOBr (10 Gl / min) and gaseous N (0.5 l / min), and at the same time, the local heated zone with the temperature of the LES created by the flame luminous gas, moved along the tube of silica glass 15 times
    at a rate of 10 cm / min in the direction of the gas mixture flow. After that, only N gas is passed through for 10 min, and then the tube and the rod are spun by increasing the temperature, and then they are pulled into a fiber with a core diameter of 120 µm in a way. Light attenuation in the optical fiber thus obtained is
    0 as a result of measurements of 3.1 dB / km for a wavelength of 0.8 μm.
    When comparing an optical fiber in the case that no vapor processing is performed, the light wave attenuation of 10.5 dB / kg for
    5 of the same wavelength.
    Examples 3-16. In accordance with the procedure of Example 2, blanks for optical waveguides are obtained, with the difference that rods of high-purity quartz glass with a refractive index of 1.4585 are taken as the core material, an oxygen-hydrogen flame is used as a source for heating
    5a, the vapor-phase treating agents and the temperatures used are listed in the table.
    However, in examples 3, 8, 9 and 12 after the vapor-phase treatment of CPd.
    0 or CWd, respectively, heated with a floating hydrogen-hydrogen flame, is repeated 10 times by passing a stream of gaseous 0 at a flow rate of 0.5 l / min,
    5 as in Example 1 in order to remove the deviating coal materials.
    B also shows the attenuation values of light at a wavelength
    0 0.85 µm for the optical fibers obtained in each of Examples 3-16.
    CF
    SF 6
    SeF SOF SOC CCl Y1200
    3.5
    3.1 3.6 2.9
    权利要求:
    Claims (1)
    [1]
    3.8 3.3 For comparison, the attenuation of light in an optical fiber in the case where the paroping process as in Examples 3-16 is not carried out is 10.1 dB / km for a wavelength of 0.85 µm. The Invention A method for producing a billet for an optical waveguide by inserting a quartz glass rod containing 1.2-4% into a quartz glass tube, feeding the reagent into the continuation of the table between them, heat treatment and stretching, characterized in that in order to reduce the attenuation of light in the waveguide, reagent vapors selected from the groups CF4, CCH, CCH, CrH4, CCl2.F, SFfe, SCl4, SDFa, SOClg., SeFg, SeCl4,, SeOFa are supplied. 50Vg2. Sources of information taken into account in the examination 1. French patent 2302977, l. From 03 To 23/04, published 1970.
    类似技术:
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    JPH1059730A|1998-03-03|Production of synthetic quartz glass
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    JPS61219733A|1986-09-30|Production of base material for optical fiber
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    同族专利:
    公开号 | 公开日
    AU5294179A|1980-05-29|
    GB2037273A|1980-07-09|
    CA1124523A|1982-06-01|
    JPS5852935B2|1983-11-26|
    NL7908383A|1980-05-22|
    JPS5571636A|1980-05-29|
    FR2441594A1|1980-06-13|
    FR2441594B1|1984-06-29|
    NL175903B|1984-08-16|
    GB2037273B|1983-01-19|
    AU527599B2|1983-03-10|
    DE2946011C2|1989-01-12|
    NL175903C|1985-01-16|
    US4263030A|1981-04-21|
    DE2946011A1|1980-06-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2241511A|1938-09-29|1941-05-13|Kimble Glass Co|Method of treating the surface of glass bodies|
    JPS535637B1|1971-05-19|1978-03-01|
    GB1435523A|1972-07-12|1976-05-12|Agency Ind Science Techn|Glass fibre optical waveguide|
    NL182310C|1972-11-25|1988-02-16|Sumitomo Electric Industries|GLASS FIBER FOR OPTICAL TRANSMISSION.|
    US4116653A|1975-07-04|1978-09-26|International Standard Electric Corporation|Optical fiber manufacture|
    DE2536456C2|1975-08-16|1981-02-05|Heraeus Quarzschmelze Gmbh, 6450 Hanau|Semi-finished product for the production of optical fibers and process for the production of the semi-finished product|
    CH620181A5|1975-08-16|1980-11-14|Heraeus Schott Quarzschmelze|Process for the preparation of synthetic quartz glass, apparatus to carry out the process, and the use of the synthetic quartz glass|
    US3980459A|1975-12-24|1976-09-14|Bell Telephone Laboratories, Incorporated|Method for manufacturing optical fibers having eccentric longitudinal index inhomogeneity|
    IT1063385B|1976-02-16|1985-02-11|Ind Zignago S Mapcherita S P A|GLASS TREATMENT PROCEDURE|
    CA2256124C|1998-12-23|2015-06-16|C.B.F. Leti S.A.|Chimeric gene formed of the dna sequences that encode the antigenic determinants of four proteins of l. infantum, and protein encoded by said gene, and pharmaceutical composition useful for preventing and/or treating leishmaniosis in animals or humans|
    JP5171147B2|2007-07-27|2013-03-27|アサヒ飲料株式会社|Partition plate transfer device|
    JP5096238B2|2008-06-18|2012-12-12|株式会社堀場製作所|Liquid suction device|JPS55162441A|1979-06-01|1980-12-17|Nippon Telegr & Teleph Corp <Ntt>|Manufacture of optical fiber base material|
    EP0154026B1|1980-07-17|1988-09-07|BRITISH TELECOMMUNICATIONS public limited company|A monomode optical fibre and a method of manufacture|
    DE3031160C2|1980-08-18|1993-03-25|Siemens Ag, 1000 Berlin Und 8000 Muenchen, De|
    DE3031147A1|1980-08-18|1982-03-18|Siemens AG, 1000 Berlin und 8000 München|METHOD FOR PRODUCING GLASS WITH A PRE-DETERMINED REFRIGERATION PROFILE AND ALKALINE-FREE GLASS FROM AN OXIS OF A BASE MATERIAL DOPED WITH ONE OR SEVERAL SUBSTANCES|
    FR2504514B1|1981-04-24|1985-05-31|Comp Generale Electricite|PROCESS FOR PREPARING AN OPTICAL FIBER BLANK|
    DE3128698C2|1981-07-21|1984-01-19|Heraeus Quarzschmelze Gmbh, 6450 Hanau|Quartz glass cladding tube|
    DE3315156A1|1983-04-27|1984-10-31|Standard Elektrik Lorenz Ag, 7000 Stuttgart|Process for the production of optical waveguides|
    US6295844B1|1983-09-22|2001-10-02|Danh C. Tran|Apparatus and method for drawing glass fibers|
    JPS60200844A|1984-03-27|1985-10-11|Kokusai Denshin Denwa Co Ltd <Kdd>|Dehydration treatment of optical material by glow discharge|
    JPH0138063B2|1984-06-04|1989-08-10|Shinetsu Chem Ind Co|
    CA1236695A|1984-09-17|1988-05-17|Koichi Abe|Optical fiber|
    JPH0134938B2|1984-11-13|1989-07-21|Sumitomo Electric Industries|
    JPH0510288B2|1985-04-03|1993-02-09|Sumitomo Electric Industries|
    JPH044986B2|1985-04-18|1992-01-30|
    DE3521119C2|1985-06-13|1987-11-05|Heraeus Quarzschmelze Gmbh, 6450 Hanau, De|
    JPH0341415B2|1986-10-15|1991-06-24|
    US5069701A|1987-07-13|1991-12-03|Hughes Aircraft Company|Preparation of fluoride glass by chemical vapor deposition|
    DE3731604A1|1987-09-19|1989-03-30|Philips Patentverwaltung|METHOD FOR PRODUCING A MONOMODE LIGHT FIBER|
    IT1223660B|1988-07-04|1990-09-29|Pirelli Cavi Spa|PROCEDURE FOR THE MANUFACTURE OF INTEGRATED OPTICAL GUIDES IN FLUORIDE-BASED GLASS|
    US5047076A|1988-12-07|1991-09-10|Sip - Societa Italiana Per L-Esercizio Delle Telecomunicazioni P.A.|Method of fabricating optical fibres by solution-doping|
    DE3921086A1|1989-06-28|1991-01-03|Kabelmetal Electro Gmbh|METHOD FOR THE PRODUCTION OF LIGHT-WAVE GUIDES WITH MELTING OF A TUBE PIPE ONTO A RAW PREFORM|
    DE3941865A1|1989-12-19|1991-06-20|Rheydt Kabelwerk Ag|Effective impurity removal from optical fibre preform - by diffusion into layer removed before tube collapsing|
    DE3941864A1|1989-12-19|1991-06-20|Rheydt Kabelwerk Ag|Impurity removal in optical fibre preform prodn. - by impurity diffusion into layers removed before collapsing|
    DE3941863A1|1989-12-19|1991-06-20|Rheydt Kabelwerk Ag|Light wave conductors mfr. for optical fibres - by coating internal surface of tube with diffusion layer to remove impurities prior to coating when glass core layer and drawing|
    DE4016030C2|1990-05-18|1992-12-03|Heraeus Quarzglas Gmbh, 6450 Hanau, De|
    JPH04270132A|1991-02-25|1992-09-25|Sumitomo Electric Ind Ltd|Production of glass matrix for optical fiber|
    US5735927A|1996-06-28|1998-04-07|The United States Of America As Represented By The Secretary Of The Navy|Method for producing core/clad glass optical fiber preforms using hot isostatic pressing|
    RU2156485C1|1999-05-19|2000-09-20|Научный центр волоконной оптики при Институте общей физики РАН|Photosensitive fibre-optic light conduit and photoinduced structure|
    US6542690B1|2000-05-08|2003-04-01|Corning Incorporated|Chalcogenide doping of oxide glasses|
    US6947651B2|2001-05-10|2005-09-20|Georgia Tech Research Corporation|Optical waveguides formed from nano air-gap inter-layer dielectric materials and methods of fabrication thereof|
    US7469557B2|2004-06-12|2008-12-30|Teresanne Griffin|Method for forming a capillary column for filtering, separation and concentration|
    DE102004039645B3|2004-08-14|2006-01-05|Heraeus Tenevo Ag|Method for producing an optical component made of quartz glass as well as suitable precursor for carrying out the method|
    US8950215B2|2010-10-06|2015-02-10|Apple Inc.|Non-contact polishing techniques for reducing roughness on glass surfaces|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP53143160A|JPS5852935B2|1978-11-20|1978-11-20|
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