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152 条记录 (耗时 0.027 秒)

    Selective multi-chemical fiber optic sensor
    1.
    发明授权
    Selective multi-chemical fiber optic sensor 失效
    选择性多化学光纤传感器

    公开(公告)号：US5525800A

    公开(公告)日：1996-06-11

    申请号：US332294

    申请日：1994-10-31

    申请人： Jasbinder S. Sanghera ,  Pablo C. Pureza ,  Ishwar D. Aggarwal ,  Gregory Nau

    发明人： Jasbinder S. Sanghera ,  Pablo C. Pureza ,  Ishwar D. Aggarwal ,  Gregory Nau

    IPC分类号： G01N21/55 ,  G01N21/17

    CPC分类号： G01N21/7703 ,  G01N2021/7709 ,  G01N2021/773 ,  G01N2021/7793

    摘要： A fiber optic sensor for detecting at least one chemical by evanescent wave spectroscopy comprises a generator of a light signal, a mirror for introducing the light signal into a fiber, a clad optical chalcogenide glass fiber, a mirror for directing the light signal from the fiber into a detector, and a detector for detecting chemicals by the fiber. The fiber comprises a core and a clad having lower refractive index than the core enveloping and being in continuous contact with the core, at least one region on the fiber completely or partially devoid of the clad, and a polymer disposed in the region having affinity for the chemical(s). There being a different polymer in each region if there is more than one region.

    摘要翻译： 用于通过ev逝波谱检测至少一种化学物质的光纤传感器包括光信号的发生器，用于将光信号引入光纤的反射镜，包层光学硫族化物玻璃光纤，用于引导来自光纤的光信号的反射镜 检测器，以及用于通过纤维检测化学品的检测器。 纤维包括芯和包层，其折射率低于芯包络并且与芯连续接触，纤维上的至少一个区域完全或部分不含包层，并且聚合物设置在具有亲和力的区域中 化学物质。 如果存在多于一个区域，则在每个区域中存在不同的聚合物。

    Method of forming waveguides with ion exchange of halogen ions
    4.
    发明授权
    Method of forming waveguides with ion exchange of halogen ions 失效
    用卤离子离子交换形成波导的方法

    公开(公告)号：US5294240A

    公开(公告)日：1994-03-15

    申请号：US937765

    申请日：1992-09-01

    申请人： Jasbinder S. Sanghera ,  Pablo C. Pureza ,  Ishwar D. Aggarwal

    发明人： Jasbinder S. Sanghera ,  Pablo C. Pureza ,  Ishwar D. Aggarwal

    IPC分类号： C03C21/00

    CPC分类号： C03C21/007 ,  Y10S65/15 ,  Y10S65/16

    摘要： This invention pertains to optical waveguides which includes waveguides ofll shapes and sizes, preforms, and optical fibers made from the preforms, and to a method for making waveguides devoid of a physical interface. The method includes preparation of a waveguide from a halide-containing glass, heating the waveguide to a temperature below crystallization temperature of the glass so that it is still solid, providing a gaseous reactive medium containing halide ions of higher electronegativity than halide ions in the waveguide, exposing the waveguide to said reactive medium for a sufficient duration for the halide ions of higher electronegativity in the reactive medium to replace at least a portion of the halide ions of lower electronegativity in the waveguide, and cooling the waveguide whereby a lower refractive index is formed on the side of the waveguide exposed to the reactive medium than the refractive index internally of the waveguide so that light can travel through the portion of the waveguide having the higher refractive index.

    摘要翻译： 本发明涉及包括所有形状和尺寸的波导的光波导，预成型件和由预型件制成的光纤，以及用于制造没有物理接口的波导的方法。 该方法包括从含卤化物的玻璃制备波导，将波导加热至低于玻璃结晶温度的温度，使其仍然是固体，提供含有比波长中的卤离子更高的电负性的卤离子的气态反应介质 使波导到所述反应介质持续足够的持续时间，以使反应介质中具有较高电负性的卤离子替代至少一部分波导中较低电负性的卤离子，并冷却波导，由此较低折射率为 形成在暴露于反应性介质的波导的侧面，而不是波导内部的折射率，使得光可以穿过具有较高折射率的波导的部分。

    Plasma treatment of glass surfaces to remove carbon
    5.
    发明授权
    Plasma treatment of glass surfaces to remove carbon 失效
    玻璃表面的等离子体处理以除去碳

    公开(公告)号：US5364434A

    公开(公告)日：1994-11-15

    申请号：US953390

    申请日：1992-09-30

    申请人： Jasbinder S. Sanghera ,  Pablo C. Pureza ,  Ishwar D. Aggarwal

    发明人： Jasbinder S. Sanghera ,  Pablo C. Pureza ,  Ishwar D. Aggarwal

    IPC分类号： C03C23/00

    CPC分类号： C03C23/006 ,  C03C23/0075 ,  Y10S65/16

    摘要： Glass free of surface carbon deposits, such as carbon film and/or carbon occlusions, and a process for removing such carbon deposits from glass. The process is characterized by the application of a plasma to glass to remove the carbon deposits. The plasma used for this purpose contains active specie which reacts with the carbon deposits to form gaseous carbon products.

    摘要翻译： 没有表面碳沉积物的玻璃，例如碳膜和/或碳封闭物，以及从玻璃中除去这些碳沉积物的方法。 该方法的特征在于将等离子体施加到玻璃上以除去碳沉积物。 用于此目的的等离子体包含与碳沉积物反应形成气态碳产物的活性物质。

    Fiber optic infrared cone penetrometer system
    6.
    发明授权
    Fiber optic infrared cone penetrometer system 失效
    光纤红外锥体透度计系统

    公开(公告)号：US5739536A

    公开(公告)日：1998-04-14

    申请号：US572389

    申请日：1995-12-14

    申请人： Frank Bucholtz ,  Gregory Nau ,  Ishwar D. Aggarwal ,  Jasbinder S. Sanghera ,  Kenneth J. Ewing

    发明人： Frank Bucholtz ,  Gregory Nau ,  Ishwar D. Aggarwal ,  Jasbinder S. Sanghera ,  Kenneth J. Ewing

    IPC分类号： G01J3/02 ,  G01J3/10 ,  G01J3/42 ,  G01N33/24 ,  G01V8/02 ,  G01V9/00 ,  G01J5/02

    CPC分类号： G01J3/42 ,  G01J3/02 ,  G01J3/0216 ,  G01J3/0218 ,  G01J3/0291 ,  G01J3/10 ,  G01N33/24 ,  G01V8/02 ,  G01V9/007

    摘要： A system for the in-situ detection of chemicals, including water, in soil comprises: a penetrometer for penetrating the soil, the penetrometer including interior and exterior surfaces, and a window for allowing infrared radiation to be transmitted between the interior and exterier surfaces of the penetrometer; a driver for driving the penetrometer into the soil to a plurality of different depths; a source for providing infrared radiation which passes through the window to irradiate the soil adjacent to the window; an infrared transmitting chalcogenide optical fiber; an optical system disposed within the penetrometer adjacent to the window for transmitting infrared radiation from the source through the window into the soil and for collecting infrared radiation reflected from the soil back through the window into a first end of the chalcogenide fiber; and a spectrometer coupled to a second end of the infrared transmitting chalcogenide optical fiber for receiving and analyzing the reflected infrared radiation passing through the chalcogenide optical fiber to obtain information on chemicals present at various depths of the soil through which the penetrometer passes.

    摘要翻译： 用于在土壤中原位检测化学物质（包括水）的系统包括：用于穿透土壤的透度计，包括内部和外部表面的透度计，以及允许红外辐射在内部和外部表面之间传递的窗口 透度计 用于将穿透器驱动到土壤中到多个不同深度的驱动器; 用于提供红外辐射的源，其通过窗口照射邻近窗户的土壤; 红外透射硫族化物光纤; 光学系统设置在邻近窗口的透光计中，用于将来自源的红外辐射通过窗口传送到土壤中，并用于将通过窗口反射的从土壤反射的红外辐射收集到硫族化物纤维的第一端; 以及耦合到红外透射硫族化物光纤的第二端的光谱仪，用于接收和分析通过硫族化物光纤的反射红外辐射，以获得关于渗透计通过的土壤各个深度处存在的化学物质的信息。