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    • 3. 发明申请
    • Apparatus for deposition by flame hydrolysis
    • 用于通过火焰水解沉积的装置
    • US20050166641A1
    • 2005-08-04
    • US11050461
    • 2005-02-01
    • Arnab SarkarBedros Orchanian
    • Arnab SarkarBedros Orchanian
    • C03B37/014C03B37/018
    • C03B37/01406C03B37/01413C03B37/0142C03B37/0144C03B2207/50C03B2207/52C03B2207/64C03B2207/81
    • An outside chemical vapor deposition apparatus is disclosed for depositing porous glass-forming material onto a target rod to form a cylindrical body, with substantially higher efficiency than could prior apparatus. The apparatus includes two separate burner arrays, one array optimized for depositing the material during an initial stage of the process, when the cylindrical body has a relatively small diameter, and the other array optimized for depositing the material during a later stage of the process, when the cylindrical body has a relatively large diameter. In addition, each burner array can include a plurality of burners, with each burner azimuthally angled relative to the apparatus' air-flow axis, and with adjacent burners angled in opposite directions relative to that axis, to minimize the density gradient within the deposited porous material.
    • 公开了用于将多孔玻璃形成材料沉积到目标棒上以形成圆柱形主体的外部化学气相沉积装置,其效率比现有装置高得多。 该装置包括两个单独的燃烧器阵列,当圆柱体具有相对较小的直径时,优选用于在该过程的初始阶段期间沉积材料的一个阵列,并且针对在该过程的稍后阶段期间沉积材料而优化的另一个阵列, 当圆柱体具有相对大的直径时。 此外,每个燃烧器阵列可以包括多个燃烧器,其中每个燃烧器相对于装置的气流轴线方位角成角度,并且具有相对于该轴线相反方向成角度的相邻燃烧器,以使沉积的多孔体内的密度梯度最小化 材料。
    • 4. 发明授权
    • Methods of making optical waveguides
    • 制造光波导的方法
    • US5028246A
    • 1991-07-02
    • US308986
    • 1989-02-08
    • Arnab Sarkar
    • Arnab Sarkar
    • C03B37/014
    • C03B37/0148C03B37/014C03B37/0142C03B37/01446C03B37/01486C03B2201/12C03B2203/22C03B2203/24C03B2203/26C03B2207/06C03B2207/12C03B2207/20C03B2207/36C03B2207/54C03B2207/60C03B2207/64C03B2207/70
    • Low attenuation, low dispersion of optical waveguides are provided by a process initiating with axial deposition of a high velocity core soot stream impinging on a target at a high angle of incidence relative to the axis of rotation of the target. A core cylinder is built up axially by relative movement between the soot stream and target during deposition, the movement being non-constant in order to maintain a substantially constant diameter with a constant deposition rate. A cladding layer is then built up by deposition of soot radially on the core. Subsequent drying and sintering provides a vitreous preform which may be drawn directly into optical waveguides. Alternatively, the sintered product may be drawn down to smaller rods, which then are covered with further deposited soot cladding to a desired final thickness, and after further drying and sintering may be drawn to optical waveguides.
    • 光波导的低衰减,低色散是通过以相对于目标的旋转轴线以高入射角冲击目标的高速核心烟灰流的轴向沉积开始的过程来提供的。 在沉积期间通过烟灰流和靶之间的相对运动轴向地建立芯筒,该运动是不恒定的,以便以恒定的沉积速率保持基本上恒定的直径。 然后通过将烟灰放射在芯上沉积来形成包覆层。 随后的干燥和烧结提供可以直接拉入光波导的玻璃状预制件。 或者,烧结产品可以被拉伸到较小的杆,然后用另外沉积的烟灰覆层覆盖到所需的最终厚度,并且在进一步干燥和烧结之后,可以将其吸引到光波导。
    • 5. 发明授权
    • High bandwidth optical waveguide having B.sub.2 O.sub.3 free core and
method of fabrication
    • 具有B2O3自由磁芯的高带宽光波导和制造方法
    • US4229070A
    • 1980-10-21
    • US929415
    • 1978-07-31
    • Robert OlshanskyArnab Sarkar
    • Robert OlshanskyArnab Sarkar
    • C03B37/00C03B37/018C03C13/04G02B6/036G02B5/14C03B37/075
    • G02B6/03633C03B37/018C03C13/045G02B6/03627C03B2203/26
    • A method of forming a preform or blank for a high bandwidth gradient index optical filament, the preform itself and the resulting optical filament is disclosed. The preform which ultimately forms the optical filament includes a barrier layer between a tubular starting member which comprises the cladding and the core, the index of refraction of the barrier layer being equal to or less than the index of refraction of the tubular starting member; there being no step increase in the index of refraction of the barrier layer at the barrier layer-cladding interface nor of the core at the core-barrier layer interface of the optical filament. The tubular starting member is formed of a base glass and at least one dopant, the index of refraction of the tubular starting member being in excess of said base glass. The barrier layer is formed from a base glass and at least one dopant which is maintained substantially constant in the barrier layer. The core is formed of a base glass and at least one dopant which is gradually varied during the formation of the core, the core being free of B.sub.2 O.sub.3.
    • 公开了一种形成用于高带宽梯度折射率光纤的预成型件或坯料的方法,预成型件本身和所得到的光纤。 最终形成光纤的预成型件包括在包括包层和芯之间的管状起始构件之间的阻挡层,阻挡层的折射率等于或小于管状起始构件的折射率; 阻挡层 - 包层界面处的阻挡层的折射率和光纤的芯阻挡层界面处的芯的折射率没有增加。 管状起始构件由基底玻璃和至少一种掺杂物形成,管状起始构件的折射率超过所述基础玻璃。 阻挡层由基底玻璃和在阻挡层中保持基本恒定的至少一种掺杂剂形成。 芯由基底玻璃和至少一种在芯的形成期间逐渐变化的掺杂剂形成,芯不含B 2 O 3。
    • 7. 发明授权
    • Apparatus for deposition by flame hydrolysis
    • 用于通过火焰水解沉积的装置
    • US07383704B2
    • 2008-06-10
    • US11050461
    • 2005-02-01
    • Arnab SarkarBedros Orchanian
    • Arnab SarkarBedros Orchanian
    • C03B37/018C03B5/237F27B1/26
    • C03B37/01406C03B37/01413C03B37/0142C03B37/0144C03B2207/50C03B2207/52C03B2207/64C03B2207/81
    • An outside chemical vapor deposition apparatus is disclosed for depositing porous glass-forming material onto a target rod to form a cylindrical body, with substantially higher efficiency than could prior apparatus. The apparatus includes two separate burner arrays, one array optimized for depositing the material during an initial stage of the process, when the cylindrical body has a relatively small diameter, and the other array optimized for depositing the material during a later stage of the process, when the cylindrical body has a relatively large diameter. In addition, each burner array can include a plurality of burners, with each burner azimuthally angled relative to the apparatus' air-flow axis, and with adjacent burners angled in opposite directions relative to that axis, to minimize the density gradient within the deposited porous material.
    • 公开了用于将多孔玻璃形成材料沉积到目标棒上以形成圆柱形主体的外部化学气相沉积装置,其效率比现有装置高得多。 该装置包括两个单独的燃烧器阵列,当圆柱体具有相对较小的直径时,优选用于在该过程的初始阶段期间沉积材料的一个阵列,并且针对在该过程的稍后阶段期间沉积材料而优化的另一个阵列, 当圆柱体具有相对大的直径时。 此外,每个燃烧器阵列可以包括多个燃烧器,其中每个燃烧器相对于装置的气流轴线方位角成角度,并且具有相对于该轴线相反方向成角度的相邻燃烧器,以使沉积的多孔体内的密度梯度最小化 材料。
    • 8. 发明授权
    • Methods of making optical waveguides
    • 制造光波导的方法
    • US5364430A
    • 1994-11-15
    • US002077
    • 1993-01-08
    • Arnab Sarkar
    • Arnab Sarkar
    • C03B37/014C03B37/018
    • C03B37/0148C03B37/014C03B37/0142C03B37/01446C03B37/01486C03B2201/12C03B2203/22C03B2203/24C03B2203/26C03B2207/06C03B2207/12C03B2207/20C03B2207/36C03B2207/54C03B2207/60C03B2207/64C03B2207/70
    • Low attenuation, low dispersion of optical waveguides are provided by a process initiating with axial deposition of a high velocity-core soot stream impinging on a target at a high angle of incidence relative to the axis of rotation of the target. A core cylinder is built up axially by relative movement between the soot stream and target during deposition, the movement being non-constant in order to maintain a substantially constant diameter with a constant deposition rate. A cladding layer is then built up by deposition of soot radially on the core. Subsequent drying and sintering provides a vitreous preform which may be drawn directly into optical waveguides. Alternatively, the sintered product may be drawn down to smaller rods, which then are covered with further deposited soot cladding to a desired final thickness, and after further drying and sintering may be drawn to optical waveguides.
    • 光波导的低衰减,低色散是通过以相对于目标的旋转轴线以高入射角冲击目标物的高速核心烟灰流的轴向沉积开始的过程来提供的。 在沉积期间通过烟灰流和靶之间的相对运动轴向地建立芯筒,该运动是不恒定的,以便以恒定的沉积速率保持基本上恒定的直径。 然后通过将烟灰放射在芯上沉积来形成包覆层。 随后的干燥和烧结提供可以直接拉入光波导的玻璃状预制件。 或者,烧结产品可以被拉伸到较小的杆,然后用另外沉积的烟灰覆层覆盖到所需的最终厚度,并且在进一步干燥和烧结之后,可以将其吸引到光波导。