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    • 4. 发明授权
    • Method for producing a glass thin film with controlloing an oxide vapor
of an additive
    • 用添加剂的氧化物蒸气调制玻璃薄膜的方法
    • US5503650A
    • 1996-04-02
    • US330602
    • 1994-10-28
    • Shinji IshikawaAkira UranoHaruhiko AikawaChizai HiroseHiroo KanamoriMasahide Saitoh
    • Shinji IshikawaAkira UranoHaruhiko AikawaChizai HiroseHiroo KanamoriMasahide Saitoh
    • C03B19/14C03C17/00C03C17/02C23C14/10C23C16/44C23C16/453C03B37/018
    • C03B19/1453C03B19/14C03B19/1415C03C17/001C03C17/02C23C14/10C23C16/44C23C16/453C03B2207/90
    • 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 SiO.sub.2 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 (P.sub.2 O.sub.5, B.sub.2 O.sub.3, GeO.sub.2, 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.
    • 制造氧化物玻璃薄膜的方法包括获得透明玻璃膜的方法,其中有效地抑制了沉积的多孔膜中的添加剂的挥发,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,添加成分的氧化物蒸气在多孔薄膜被加热的气氛中混合,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。
    • 7. 发明授权
    • Optical waveguide and method of fabricating the same
    • 光波导及其制造方法
    • US5551966A
    • 1996-09-03
    • US181126
    • 1994-01-13
    • Chisai HiroseHiroo KanamoriAkira UranoShinji IshikawaHaruhiko AikawaMasahide Saito
    • Chisai HiroseHiroo KanamoriAkira UranoShinji IshikawaHaruhiko AikawaMasahide Saito
    • C03B8/04C03C13/04G02B6/132G02B6/136
    • G02B6/136C03C13/045G02B6/132
    • In the method for forming an optical waveguide according to this invention, an optical waveguide comprising a core of quartz as a main component, and a cladding layers surrounding the core is formed by deposition of glass fine particles by flame hydrolysis deposition and vitrifying the glass fine particle layers. This method includes a step of transiently increasing a feed amount of phosphorus to a flame burner in forming glass fine particle layers to be the cladding layers. Feeding phosphorus in this step for the first time after a glass fine particle layer is deposited without feeding phosphorus to the flame burner, whereby generation of foreign objects near the core dan be suppressed. The method for fabricating an optical waveguide according to this invention is for fabricating a core 132a or cladding layers 122 142 surrounding the core 132a by flame hydrolysis deposition and is characterized in that the glass fine particle layers are vitrified after the deposition of the phosphorus-content glass fine particle layer, whereby glass films 122a, 122b with a thickness of below 10 .mu.m are formed. This glass film forming step is repeated twice or more times to form the core or the glass layers to be the cladding layers surrounding the core. This invention can suppress inhomogeneous vitrified films and especially can make phosphorus concentrations in the cladding layers uniform. As a result, prapagation losses can be made small.
    • 在本发明的光波导形成方法中,以石英为核心的光波导和围绕芯的包层形成,通过火焰水解沉积玻璃微粒并使玻璃微细化 颗粒层。 该方法包括在形成作为包覆层的玻璃微粒子层时,向火焰燃烧器短暂地增加磷的供给量的步骤。 在玻璃微粒层沉积后,在该步骤中首先进料磷,而不向磷火焰炉供给磷,从而抑制在核心附近产生异物。 根据本发明的制造光波导的方法是通过火焰水解沉积来制造围绕芯132a的芯132a或包层122 142,其特征在于在沉积磷含量之后玻璃微粒层被玻璃化 玻璃微粒层,由此形成厚度低于10μm的玻璃膜122a,122b。 将该玻璃成膜工序重复两次以上,形成作为芯周围的包层的芯或玻璃层。 本发明可以抑制不均匀的玻璃化膜,特别是可以使包层中的磷浓度均匀。 因此,可以减少预算损失。
    • 10. 发明授权
    • Method of curing coated optical fibers
    • 固化涂层光纤的方法
    • US06612134B1
    • 2003-09-02
    • US08973213
    • 1997-12-04
    • Koji ShimodaHaruhiko AikawaMotohide YoshidaTakashi Hasegawa
    • Koji ShimodaHaruhiko AikawaMotohide YoshidaTakashi Hasegawa
    • C03B37018
    • C03C25/12C03C23/0075C03C25/1065
    • The present invention relates to a method of making an optical fiber product. In particular, this manufacturing method is characterized in that, between a drawing step in which a coated optical fiber comprising a glass fiber and a primary coating layer disposed around the outer periphery of the glass fiber is wound around a reel and a processing step in which the coated optical fiber wound around the reel is rewound around a bobbin, a control step is provided for holding the coated optical fiber wound around the reel in a place with a mean atmospheric temperature T (>0° C.) for at least 30,000/T2 (hr) and, in the case where a coloring layer or the like is disposed around the outer periphery of the coated optical fiber, for at least 30,000/T2 (hr) but not longer than 210,000/T2 (hr). The optical fiber product such as a ribbon-type optical fiber obtained in consequence of this control step, effectively suppressed are increase in transmission loss caused by delamination between the glass fiber and the primary coating layer disposed around its outer periphery, and delamination of the coloring layer disposed around the outer periphery of the coated optical fiber or the like.
    • 本发明涉及一种制造光纤产品的方法。 特别地,该制造方法的特征在于,将包括玻璃纤维的涂覆光纤和布置在玻璃纤维的外周周围的主要涂层缠绕在卷轴上的拉伸步骤和其中 缠绕在卷轴上的被覆光纤围绕绕线筒回绕,提供控制步骤,用于将缠绕在卷轴上的涂覆的光纤保持在平均气温T(> 0℃)的地方至少30,000 / T2(小时),并且在着色层等围绕涂覆光纤的外周设置至少30,000 / T2(小时)但不大于210,000 / T2(小时)的情况。 有效地抑制了由该控制步骤得到的带状光纤等光纤产品,由玻璃纤维与设置在其外周侧的一次被覆层之间的分层而导致的传输损耗的增加,着色 层设置在被覆光纤等的外周。