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91. 发明专利

JPS5542269A PRODUCTION OF HIGH PURITY GLASS 失效
公开(公告)号：JPS5542269A
公开(公告)日：1980-03-25
申请号：JP11613778
申请日：1978-09-21
申请人： HITACHI CABLE
发明人： NAKAGAWA JIYUNKICHI , TOKUNAGA TOSHIHIDE , YABUKI TSUTOMU
IPC分类号： C03C13/04 , C03B32/00 , C03B37/014 , G02B6/00
摘要： PURPOSE:To obtain high purity glass of reduced impurity content by separation- eluting B2O3.R2O phase from glass after which the resulting porous glass is heat treated in a hydrogen-free, chlorine-contg. dry gas stream and converted into glass. CONSTITUTION:Borosilicate glass contg. monovalent metal oxides is separated into SiO2 phase and sol. B2O3.R2O phase by heat treatment, and it is dipped in an aq. soln. to elute the B2O3.R2O phase. The resulting porous SiO2 phase glass is heat treated in a hydrogen-free, chlorine-contg. dry gas stream and converted into glass. By heating the porous glass in a chlorine-contg. gas atmosphere it can be purified and converted into glass in the same process. In case OH is allowed to remain, the glass can be purified in a hydrogen chloride-contg. gas atmosphere, and hydrogen is usable as carrier gas.

92. 发明专利

JPS54116426A PRODUCTION OF OPTICAL FIBER 失效
公开(公告)号：JPS54116426A
公开(公告)日：1979-09-10
申请号：JP2018878
申请日：1978-02-23
申请人： HITACHI CABLE
发明人： NAKAGAWA JIYUNKICHI , TOKUNAGA TOSHIHIDE
IPC分类号： C03B37/012 , G02B6/00
摘要： PURPOSE:A glass tube that is coated with the interlayer of glass film on the inner surface is shrinked in the inner diameter to the outer diameter of the core rod, thereby producing optical fibers with high roundness and no inclination in film thickness by the rod-in-tube method. CONSTITUTION:After glass tube 1 is coated with glass film 2 as the interlayer on the inner surface, the inner diameter is shrinked by use of burner 4. Then core rod 3 with the outer diameter close to the inner one of glass tube 1 is inserted and the both are integrated by fusing with heat. They are sufficiently treated with heat to adhere core rod 3 closely to glass tube 1 and remove strains at the interface. When the heating process is carried out by standing the glass tube upright, the inclination in wall thickness and reduction in roundness can be effectively reduced. Then, the resulting rod is drawn into small cross section to produce said optical fibers.

93. 发明专利

JPS53121638A PRODUCTION OF OPTICAL FIBERS 失效
公开(公告)号：JPS53121638A
公开(公告)日：1978-10-24
申请号：JP3632777
申请日：1977-03-31
申请人： HITACHI CABLE
发明人： NAKAGAWA JIYUNKICHI , TOKUNAGA TOSHIHIDE , YABUKI TSUTOMU
IPC分类号： C03B37/018 , G02B6/00
摘要： PURPOSE:To enhance accuracy and produce an optical fiber which does not restrict transmission zone and does not cause an increase in transmission loss by forming a film of core glass to the inside wall of glass tube through a specific glass barrier layer.

94. 发明专利

JPS5245685A EPOXY RESIN COMPOSITIONS 失效
公开(公告)号：JPS5245685A
公开(公告)日：1977-04-11
申请号：JP12225475
申请日：1975-10-09
申请人： HITACHI CABLE
发明人： WAKATSUKI SADAO , TOKUNAGA TOSHIHIDE
IPC分类号： C08F299/00 , C08F222/10 , C08F290/00 , C08F299/02 , C08G59/00 , C08G59/18 , C08G59/40
摘要： PURPOSE:A composition suitable for use in electrical insulating parts, various kinds of shaped articles, cast articles, impregnated articles adhesives, etc., whose viscosity and curability, etc. can be controlled by0mixing an unsaturated dibasic acid monoester, a monomer, and a catalyst with an epoxy resin.

95. 发明专利

JP2001083343A GLASS WAVEGUIDE MODULE AND METHOD FOR ITS PRODUCTION 失效
公开(公告)号：JP2001083343A
公开(公告)日：2001-03-30
申请号：JP25594599
申请日：1999-09-09
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , TAKASUGI SATORU
IPC分类号： G02B6/12 , G02B6/13
摘要： PROBLEM TO BE SOLVED: To provide a glass waveguide module which is short in rising time and is small in electric power consumption and a process for producing the same. SOLUTION: With this glass waveguide module, a gelatinous resin 21 is packed as a thermally insulating material into a package 14 of a glass waveguide module 20 constituted by building the array type glass waveguide 1 mounted with a heater 13 into the package 14, by which the gelatinous resin 21 is closely and sufficiently packed into the package 14 and, therefore, the heat of the heater 13 is rapidly transmitted to the array type glass waveguide 1. Consequently, the glass waveguide module 20 which is short in the rising time and is small in the electric power consumption may be obtained.

96. 发明专利

JP2001066450A METHOD FOR PRODUCTION OF GLASS WAVEGUIDE 失效
公开(公告)号：JP2001066450A
公开(公告)日：2001-03-16
申请号：JP24541999
申请日：1999-08-31
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE
IPC分类号： G02B6/13 , G02B6/12
摘要： PROBLEM TO BE SOLVED: To obtain a glass waveguide having low loss and good optical characteristics without producing air bubbles by subjecting a core glass waveguide after formed to a treatment with supercritical water. SOLUTION: A core glass film 22a of a TiO2-SiO2-based glass is formed by an electron beam vapor deposition method on a Si or SiO2-based substrate 20. Then a tungsten silicide (WSi) film 25a is formed by a sputtering method on the core glass film 22a. Then a photoresist pattern 26 as a mask pattern for an optical circuit of a splitter is formed on the WSi film 25a. Then WSi film is etched with NF3 gas by using the hotoresist pattern 26 as a mask and using a reactive ion etching device to form a WSi pattern 25. After the WSi pattern 25 is formed, the photoresist pattern 26 on the WSi pattern 25 is removed. Then the substrate 20 is introduced into a chamber and treated with supercritical water to remove the deposit of compounds with W, Si and the resist produced during etching.

97. 发明专利

JPH09311236A PRODUCTION OF GLASS WAVEGUIDE 失效
公开(公告)号：JPH09311236A
公开(公告)日：1997-12-02
申请号：JP185497
申请日：1997-01-09
申请人： HITACHI CABLE
发明人： KAMOSHITA TOSHIKAZU , TOKUNAGA TOSHIHIDE , NISHIZAWA RYOJI , KOBAYASHI NOBUHITO
IPC分类号： G02B6/13
摘要： PROBLEM TO BE SOLVED: To prevent air bubbles from remaining or generating in a clad layer on the periphery of a core waveguide and more particularly on the periphery at the branching point of this core waveguide. SOLUTION: This process for production comprises forming the core waveguide on a quartz glass substrate by a stage for photolithography and ion etching and depositing a porous glass film by a flame hydrolysis method, etc., thereon, thereby forming the substrate 5 with the porous glass film. The gradient of the in-furnace temp. of a heating furnace constituted by providing the furnace with a quartz furnace core tube 7, a heater 8, etc., is so set that the transparent vitrification of the porous glass film starts from the quartz glass substrate side.

98. 发明专利

JPH0862442A MANUFACTURE OF GLASS WAVEGUIDE 失效
公开(公告)号：JPH0862442A
公开(公告)日：1996-03-08
申请号：JP19977394
申请日：1994-08-24
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , KIKUCHI FUJIO
IPC分类号： G02B6/13
摘要： PURPOSE: To provide a glass waveguide with low loss by uniforming a core glass film with a quartz glass film even when its surface is defective. CONSTITUTION: A core glass film 2 is formed on a quartz glass base 1 by electron beam evaporation, and a quartz glass film (quartz glass film) 6 is formed on the core glass film 2 by plasma CDV method in order to uniform the surface. Therefore, the application of a resist film in photolithography process is uniformed, and an unnecessary part is removed from the quartz glass film 6 and the core glass film 2 by photolithography and reactive ion etching, whereby an uniform core waveguide 2 having no crack can be formed. A porous glass is successively accumulated on the base 1, and this porous glass layer is transparentized to form a clad layer 4, whereby a glass waveguide with low loss is manufactured.

99. 发明专利

JPH07318734A QUARTZ GLASS WAVEGUIDE AND ITS PRODUCTION 失效
公开(公告)号：JPH07318734A
公开(公告)日：1995-12-08
申请号：JP11527794
申请日：1994-05-27
申请人： HITACHI CABLE
发明人： OKANO HIROAKI , UETSUKA NAOTO , KAMOSHITA TOSHIKAZU , MUTO YASUHARU , TOKUNAGA TOSHIHIDE
IPC分类号： G02B6/12 , G02B6/122 , G02B6/13
摘要： PURPOSE:To provide a quartz glass waveguide in which the loss in the dependency on polarized light is extremely low because an abnormal glass layer having high P2O5 density and higher refractive index than a core waveguide is not formed on the interface between a clad layer and a quartz glass substrate or a core waveguide, and to provide its production method. CONSTITUTION:After the core waveguide 3 is formed on a quartz glass substrate 1, a porous glass layer 4a of SiO2 with addition of B2O3 but containing no P2O5 is deposited to 250-350mum thickness by flame deposition method. Then a porous glass layer 4b of SiO2 with addition of B2O5 and P2O5 is formed to 10-50mum thickness by flame deposition method on the porous glass layer 4a. Then the substrate is put in an electric furnace, heated and sintered in a He gas atmosphere to 1330 deg.C to convert into transparent glass. Thus, a clad layer 5 comprising SiO2-B2O3-P2O5 glass and a thin film glass layer 6 having uneven distribution of P2O5 are formed.

100. 发明专利

JPH0582333B2 失效
公开(公告)号：JPH0582333B2
公开(公告)日：1993-11-18
申请号：JP14112284
申请日：1984-07-06
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , TERAOKA TATSUO , FUJITA TSUNEYOSHI
IPC分类号： C03B37/018 , G02B6/00 , C03B8/04

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