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    • 1. 发明授权
    • Coupling structure of optical fibers and optical waveguides
    • 光纤和光波导的耦合结构
    • US5513290A
    • 1996-04-30
    • US383930
    • 1995-02-06
    • Shinji IshikawaHiroshi SuganumaDai YuiShigeru SemuraMasahide SaitoShigeru Hirai
    • Shinji IshikawaHiroshi SuganumaDai YuiShigeru SemuraMasahide SaitoShigeru Hirai
    • G02B6/30G02B6/42G02B6/255
    • G02B6/30G02B6/4212
    • There is disclosed a coupling structure of optical fibers and optical waveguides, comprising optical fibers; an optical fiber arranging connector having a first and second members, the optical fibers being sandwiched by the first and second members to be fixed in the optical fiber arranging connector; a waveguide device having a waveguide substrate, optical waveguides being formed on a surface of the waveguide device, ends of the waveguides and ends of being aligned with each other by abutting end faces thereof against each other; an adhesive interposed and set between said end faces, the adhesive being a photo-setting adhesive, the first member being made of a material preventing light having a wavelength capable of setting said adhesive from passing therethrough, and in at least part of a region where the end faces of the optical fiber arranging connector and the waveguide device oppose to each other, at least one of the optical fiber arranging connector and the waveguide device in the vicinity of the end face thereof being made of a light-transmitting material through which light having a wavelength capable of setting the adhesive can pass.
    • 公开了包括光纤的光纤和光波导的耦合结构; 具有第一和第二构件的光纤布置连接器,所述光纤被所述第一和第二构件夹持以固定在所述光纤布置连接器中; 具有波导基板的波导器件,在波导器件的表面上形成有光波导,波导的端部和彼此靠近的端面彼此对准; 粘合剂插入并设置在所述端面之间,所述粘合剂是光固化粘合剂,所述第一构件由防止具有能够使所述粘合剂通过的波长的光的材料制成,并且在至少部分区域中 光纤排列连接器和波导装置的端面彼此相对,光纤布置连接器和波导装置的端面附近的至少一个由透光材料制成,通过该光透射材料,光 具有能够设置粘合剂的波长的光通过。
    • 4. 发明授权
    • Package with optical waveguide module mounted therein
    • 其中安装有光波导模块的封装
    • US5673345A
    • 1997-09-30
    • US634257
    • 1996-04-18
    • Masahide SaitoShigeru SemuraShinji IshikawaDai YuiHiroo Kanamori
    • Masahide SaitoShigeru SemuraShinji IshikawaDai YuiHiroo Kanamori
    • G02B6/30G02B6/42
    • G02B6/4248G02B6/30
    • The present invention relates to a package in which an optical waveguide module is mounted, at least having such structure as to reduce influence of expansion or contraction (thermal stress) of a metal housing, caused with a temperature change of the external environment and applied on junction parts between an optical waveguide substrate and members for fixedly supporting tip portions of input and output optical fibers. This package comprises a cavity for housing the whole of the optical waveguide module as covered with a buffer protection material, and a metal housing having through holes for leading the above optical fibers to the outside. Particularly, the optical fibers and the through holes are bonded and secured with a filler having higher airtightness than the buffer protection material and having a lower tensile modulus than a metal material forming the housing.
    • 本发明涉及一种其中安装光波导模块的封装,其至少具有减少金属外壳的膨胀或收缩(热应力)对外部环境的温度变化引起的影响的结构,并应用于 光波导基板与用于固定地支撑输入和输出光纤的尖端部分的部件之间的接合部分。 该封装包括一个用缓冲保护材料覆盖的整个光波导模块的空腔,以及具有用于将上述光纤引导到外部的通孔的金属外壳。 特别地,光纤和通孔用比缓冲保护材料高的气密性的填料粘结固定,并且具有比形成外壳的金属材料低的拉伸模量。
    • 5. 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。
    • 6. 发明授权
    • Air-tight sintering furnace for the production of a quartz preform
    • 用于生产QUARTZ预制件的空气烧结炉
    • US5133796A
    • 1992-07-28
    • US613878
    • 1990-11-28
    • Ichiro TsuchiyaMasahide SaitoShinji IshikawaToshimi Habasaki
    • Ichiro TsuchiyaMasahide SaitoShinji IshikawaToshimi Habasaki
    • C03B8/04C03B20/00C03B37/014
    • C03B37/0146C03B2201/12Y10S65/90
    • 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.
    • 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。