Method of making synthetic silica glass
    41.
    发明授权
    Method of making synthetic silica glass 有权
    制造合成石英玻璃的方法

    公开(公告)号:US6116055A

    公开(公告)日:2000-09-12

    申请号:US191123

    申请日:1998-11-13

    摘要: Disclosed is a synthetic silica-glass fabricating method in which the doping of chlorine into silica glass made by using a flame hydrolysis or thermal oxidation is increased. The process comprises the steps of producing a porous deposit of silica-glass particles through treatment of gaseous silicon compounds by the flame hydrolysis or the thermal oxidation process; and consolidating the porous deposit by a heat treatment in an atmosphere including an inert gas and silicon tetrachloride (SiCl.sub.4) gas.

    摘要翻译: 公开了一种合成二氧化硅玻璃制造方法,其中通过使用火焰水解或热氧化将氯掺入二氧化硅玻璃中增加。 该方法包括通过火焰水解或热氧化方法处理气态硅化合物来生产二氧化硅玻璃颗粒的多孔沉积物的步骤; 并且在包括惰性气体和四氯化硅(SiCl 4)气体的气氛中通过热处理来固化多孔沉积物。

    Dispersion-shifted fiber
    42.
    发明授权
    Dispersion-shifted fiber 失效
    色散位移光纤

    公开(公告)号:US6072929A

    公开(公告)日:2000-06-06

    申请号:US998425

    申请日:1997-12-24

    IPC分类号: C03B37/014 G02B6/02

    摘要: The present invention aims to provide a dispersion-shifted fiber which can effectively restrain nonlinear optical effects from occurring and has a configuration suitable for long-haul light transmission. The dispersion-shifted fiber has, as various characteristics at a wavelength of 1,550 nm, a dispersion level of 1.0 to 4.5 ps/nm/km in terms of absolute value, a dispersion slope not greater than 0.13 ps/nm.sup.2 /km in terms of absolute value, an effective core cross-sectional area not less than 70 .mu.m.sup.2, and a transmission loss not greater than 0.25 dB/km with respect to light in a 1.55-.mu.m wavelength band.

    摘要翻译: 本发明的目的在于提供一种可以有效地抑制非线性光学效应发生并具有适于长距离透光的结构的色散位移光纤。 色散位移光纤作为波长为1,550nm的各种特性具有以绝对值表示的1.0至4.5ps / nm / km的色散水平,不大于0.13ps / nm 2 / km的色散斜率 相对于1.55μm波段的光,绝对值,有效芯截面积不小于70μm2,传输损耗不大于0.25dB / km。

    Increasing a fluorine compound flow rate during a VAD process
    43.
    发明授权
    Increasing a fluorine compound flow rate during a VAD process 失效
    在VAD过程中增加氟化合物流量

    公开(公告)号:US5895515A

    公开(公告)日:1999-04-20

    申请号:US754990

    申请日:1996-11-22

    IPC分类号: C03B37/014 C03B37/018

    摘要: In a soot-deposition container, raw material gas and at the tip of a starting glass rod, combustion gas, and carrier gas are supplied to a core-depositing burner and raw material gas, combustion gas, carrier gas, and gas for doping of fluorine are supplied to a cladding-depositing burner, thereby forming porous glass soot comprised of glass soot for core and glass soot for cladding. With growth of soot, the supply amount of the fluorine-doping gas is increased while supply amounts of the other gases are kept constant. Next, dehydration process and transparentizing process of soot are carried out to obtain a glass preform for optical fiber. Fabricated in this way is the glass preform for optical fiber having the silica glass portion doped with low-concentration fluorine with high uniformity in the growth direction.

    摘要翻译: 在烟灰沉积容器中,将原料气体和起始玻璃棒的顶端,燃烧气体和载气供应到芯沉积燃烧器和原料气体,燃烧气体,载气和用于掺杂的气体 氟被供应到包层沉积燃烧器,从而形成由用于芯的玻璃烟炱和用于包层的玻璃烟炱组成的多孔玻璃烟炱。 随着烟灰的增长,氟掺杂气体的供应量增加,而其它气体的供应量保持恒定。 接着,进行烟灰的脱水处理和透明化处理,得到光纤用玻璃预制体。 以这种方式制造的是具有掺杂有生长方向高均匀性的低浓度氟的石英玻璃部分的光纤用玻璃预制件。

    Method of connecting optical fibers
    44.
    发明授权
    Method of connecting optical fibers 失效
    连接光纤的方法

    公开(公告)号:US5891210A

    公开(公告)日:1999-04-06

    申请号:US941548

    申请日:1997-09-30

    摘要: The present invention provides a connecting member for facilitating connecting of optical fibers, and a connecting method in which the loss due to connecting is small. An optical fiber connecting member is composed of: a retaining portion having through-holes each of which has an inner diameter slightly larger than the outer diameter of optical fibers to be connected; and introduction portions which are integrally formed with and on the opposite end sides of the retaining portion and each of which has introduction grooves communicated with the through-holes to thereby make it easy to insert ends of the optical fibers into the through-holes. Further, the inner diameter of each of the through-holes is reduced by heating the connecting member to thereby make axis alignment of the optical fibers automatically to obtain connecting in which the connecting loss is reduced.

    摘要翻译: 本发明提供一种便于连接光纤的连接部件,其连接方式的连接少。 光纤连接部件由以下部分构成:保持部具有贯通孔,每个孔的内径略大于要连接的光纤的外径; 以及与保持部的两端侧一体形成的导入部,并具有与通孔连通的导入槽,从而容易将光纤的端部插入到通孔中。 此外,通过加热连接构件来减小每个通孔的内径,从而自动地使光纤的轴线对准,从而获得连接损耗减小的连接。

    Method for producing glass thin film
    45.
    发明授权
    Method for producing glass thin film 失效
    制造玻璃薄膜的方法

    公开(公告)号:US5660611A

    公开(公告)日:1997-08-26

    申请号:US463866

    申请日:1995-06-05

    摘要: A method for producing an oxide glass thin film is provided, in which volatilization of additives in a porous film from which the thin film is formed is effectively suppressed, and which the oxide glass film has a desired arrangement of refractive index with a low optical loss. According to this method, glass fine particles mainly containing SiO.sub.2 with a first additive are deposited on a substrate to form a porous thin film. A gas containing a second additive is supplied to a first chamber and heated to a first predetermined temperature profile to provide a heated gas containing an oxide. After disposing the substrate in a second chamber communicated with the first chamber, the substrate is heated to make the deposited porous glass into transparent glass while controlling a temperature in the second chamber according to a second temperature profile. A carrier gas is flowed from the first chamber to the second chamber to transfer the heated gas and oxide from the first chamber to the second chamber during heating. The temperature of the first predetermined temperature profile is maintained higher than the temperature of the second predetermined temperature profile at the same time. In addition, the heated gas contains a component that is also present in the first additive.

    摘要翻译: 提供了一种制造氧化物玻璃薄膜的方法,其中有效地抑制了形成薄膜的多孔膜中的添加剂的挥发,并且氧化物玻璃薄膜具有期望的折射率排列,光损耗低 。 根据该方法,将主要含有SiO 2的第一添加剂的玻璃微粒子沉积在基板上,形成多孔薄膜。 将含有第二添加剂的气体供应到第一室并加热至第一预定温度分布,以提供含有氧化物的加热气体。 在将基板设置在与第一室连通的第二室中之后,基板被加热以使沉积的多孔玻璃成为透明玻璃,同时根据第二温度曲线控制第二室中的温度。 载气从第一室流到第二室,以在加热期间将加热的气体和氧化物从第一室转移到第二室。 第一预定温度曲线的温度同时保持高于第二预定温度曲线的温度。 此外,加热气体含有也存在于第一添加剂中的成分。

    Optical waveguide module having waveguide substrate made of
predetermined material and ferrule made of material different from that
of waveguide substrate
    46.
    发明授权
    Optical waveguide module having waveguide substrate made of predetermined material and ferrule made of material different from that of waveguide substrate 失效
    具有由预定材料制成的波导基板和由与波导基板不同的材料制成的套圈的光波导模块

    公开(公告)号:US5625730A

    公开(公告)日:1997-04-29

    申请号:US505674

    申请日:1995-07-21

    IPC分类号: G02B6/30 G02B6/38 G02B6/42

    摘要: This invention relates to an optical waveguide module having stable temperature characteristics and moist heat characteristics even in a severe environment. This optical waveguide module includes a waveguide component having an optical waveguide on a waveguide substrate made of silicon or silica glass as the first material, and a ferrule made of a plastic material as the second material. An end face of an optical fiber is fixed by adhesion while it is inserted in a through hole of the ferrule, the through hole having a continuous inner wall. This ferrule is fixed with an adhesive having a predetermined strength so that its the end face opposes the end face of the waveguide component. The second material satisfies a relationship:.vertline..DELTA.L/(E.sub.1 /E.sub.2).vertline.

    摘要翻译: 本发明涉及即使在恶劣环境中也具有稳定的温度特性和湿热特性的光波导模块。 该光波导模块包括在由硅或石英玻璃作为第一材料制成的波导基板上具有光波导的波导部件和由塑料材料制成的套圈作为第二材料。 光纤的端面在插入套圈的通孔中时通过粘合固定,该通孔具有连续的内壁。 该套圈用具有预定强度的粘合剂固定,使其端面与波导部件的端面相对。 第二种材料满足关系:| 相对于形成波导基板的第一材料,DELTA L /(E1 / E2)| <3.0×10-6(℃-I),其中DELTA L是第一材料和第二材料之间的热膨胀系数差 ,E1是第一材料的弹性模量,E2是第二材料的弹性模量。

    Process for thermal treatment of glass fiber preform
    47.
    发明授权
    Process for thermal treatment of glass fiber preform 失效
    玻璃纤维预制件热处理工艺

    公开(公告)号:US5306322A

    公开(公告)日:1994-04-26

    申请号:US924767

    申请日:1992-07-24

    摘要: The present invention providesa process for the dehydrating and purifying treatment by heating a porous glass preform for an optical fiber comprising passing the porous glass preform through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere comprising an inert gas and a silicon halogenide gas;a process for the fluorine-doping treatment by heating a porous glass preform for an optical fiber comprising passing a porous glass preform through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere comprising a fluorine compound gas and an inert gas; anda process for the vitrifying treatment by heating a porous glass preform for an optical fiber comprising passing the preform, which has been previously dehydrated and purified, through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere gas.

    摘要翻译: 本发明提供了一种通过加热用于光纤的多孔玻璃预制件进行脱水和净化处理的方法,包括使多孔玻璃预制件通过具有SiC层的马弗管至少在其内表面上在高温下在包括 惰性气体和卤化硅气体; 通过加热用于光纤的多孔玻璃预制件进行氟掺杂处理的方法,包括使多孔玻璃预制件通过具有SiC层的马弗管至少在其内表面上在高温下在包含氟化合物气体 和惰性气体; 以及通过加热用于光纤的多孔玻璃预制件进行玻璃化处理的方法,包括使预先脱水和净化的预成型体至少在其内表面上通过具有SiC层的马弗管在高温下 气氛气体。

    Air-tight sintering furnace for the production of a quartz preform
    49.
    发明授权
    Air-tight sintering furnace for the production of a quartz preform 失效
    用于生产QUARTZ预制件的空气烧结炉

    公开(公告)号:US5133796A

    公开(公告)日:1992-07-28

    申请号:US613878

    申请日:1990-11-28

    IPC分类号: C03B8/04 C03B20/00 C03B37/014

    摘要: This invention relates to a sintering furnace for the production of a quartz preform which can be used for carrying out dehydration, fluorine-addition and/or sintering of a porous quartz soot preform prepared by a flame hydrolysis method such as a VAD method or a OVD method, and in particular, to such a furnace in which joints in a long furnace muffle so long that fabricating it as open body is impossible can be maintained fully gas-tight, so that it is possible to prevent H.sub.2 O, O.sub.2 and other impurities in the air from entering the muffle from outside, and corrosive and poisonous gases in the muffle are prevented from leakage to outside the muffle. This sintering furnace has a muffle of high purity carbon, the inner wall and/or outer wall of which is coated with a gas-impermeable film, which muffle is a cylinder with an axis in the longitudinal direction and divided into a plurality of parts in the longitudinal direction, the parts each having the upper and lower ends finished so as to be flat and abutting adjacent parts sealed by a carbon gasket between them, and further has an air cylinder for pressing the parts together in the axial direction with a uniform force around the circumference of the muffle.

    摘要翻译: PCT No.PCT / JP90 / 00418 Sec。 371日期1990年11月28日 102(e)1990年11月28日PCT PCT 1990年3月28日PCT公布。 出版物WO90 / 11973 1990年10月18日的日期。本发明涉及一种用于生产石英预制棒的烧结炉,其可用于对通过火焰水解法制备的多孔石英烟灰预制件进行脱水,加氟和/或烧结 作为VAD方法或OVD方法,特别是在这样一种炉子中,其中长炉膛中长度相等的接头不可能被保持为开放体,从而可以完全保持气密性,从而可以防止 空气中的H2O,O2和其他杂质从外部进入马弗炉,并且防止马弗炉中的腐蚀性和有毒气体泄漏到马弗炉外部。 该烧结炉具有高纯度碳的马弗管,其内壁和/或外壁涂有气体不可渗透膜,该马弗管是沿纵向轴线的圆筒,并分成多个部分 纵向方向,上下两端的部分被平坦化并邻接在它们之间的碳垫圈密封的相邻部分,并且还具有用于以均匀的力在轴向上将部件按压在一起的气缸 围绕马弗炉的圆周。