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1. 发明授权

US3996463A Method and apparatus for monitoring the relative position of a light beam and a grating using Fraunhofer diffraction effects 失效
$Method and apparatus for monitoring the relative position of a light beam and a grating using Fraunhofer diffraction effects$
标题翻译：使用Fraunhofer衍射效应监测光束和光栅的相对位置的方法和装置
公开(公告)号：US3996463A
公开(公告)日：1976-12-07
申请号：US608821
申请日：1975-08-28
申请人： Donald Paul Jablonowski
发明人： Donald Paul Jablonowski
IPC分类号： G01D5/26 , H01J39/12
CPC分类号： G01D5/26
摘要： An improved method and apparatus are disclosed for monitoring relative movement between an incident beam of substantially coherent light and a grating on which the beam is directed, wherein light from the beam passing through the grating is sensed by a photodetector, and the cycles in the photodetector output signal are counted. The improvement comprises patterning the beam, transforming the patterned beam into a Fraunhofer diffraction pattern, and further diffracting the Fraunhofer diffraction pattern with the grating to cause an interference image, which is detected by the photodetector. Each two cycles in the output signal of the photodetector then correspond to a relative movement of the beam past one grating period.
摘要翻译：公开了一种改进的方法和装置，用于监测基本上相干的光的入射光束和光束被引导的光栅之间的相对运动，其中来自通过光栅的光束的光由光电检测器感测，并且光电检测器中的循环输出信号进行计数。改进之处在于，对光束进行图案化，将图案化的光束转换成弗劳恩霍夫衍射图案，并进一步用光栅衍射Fraunhofer衍射图案，以产生由光电检测器检测到的干涉图像。光电检测器的输出信号中的每两个周期然后对应于光束经过一个光栅周期的相对运动。

2. 发明授权

US6105396A Method of making a large MCVD single mode fiber preform by varying internal pressure to control preform straightness 失效
标题翻译：通过改变内部压力来制造大型MCVD单模纤维预成型件以控制预成型件直线度的方法
公开(公告)号：US6105396A
公开(公告)日：2000-08-22
申请号：US115783
申请日：1998-07-14
申请人： Paul Francis Glodis , Charles Francis Gridley , Donald Paul Jablonowski , David Kalish , Kenneth Lee Walker
发明人： Paul Francis Glodis , Charles Francis Gridley , Donald Paul Jablonowski , David Kalish , Kenneth Lee Walker
IPC分类号： C03C3/04 , C03B37/012 , C03B37/018 , C03B37/027
CPC分类号： C03B37/01211 , C03B37/01869 , C03B37/01884 , C03B37/01892 , C03B2201/02 , C03B2201/04 , C03B2201/075 , C03B2203/24
摘要： A large optical preform 303 is made by a modified chemical vapor deposition (MCVD) process by depositing successive layers of core and cladding materials onto the inside surface of a rotating glass tube 33 having a hydroxyl ion (OH.sup.-) level that is less than 0.5 parts per million (ppm) by weight. The tube is then collapsed inwardly to form a core rod 301 in which the deposited core material 31 has a diameter that is greater than about 5 millimeters and the deposited cladding material 32 has an outside diameter that is less than about 15 millimeters. A machine-vision system 140, 150, 160 monitors and controls the diameter of the glass tube by regulating the pressure within the tube. Moreover, the machine-vision system monitors and controls the straightness of the tube by varying its rotational speed according to angular position. After the core rod 301 is formed, it is plasma etched to remove contaminants, and then overclad with two glass jackets 34, 35 having a hydroxyl ion (OH.sup.-) level that is less than 1.0 ppm by weight to create a large preform 303 from which about 400 kilometers of singlemode optical fiber can be drawn per meter of length.
摘要翻译：通过改进的化学气相沉积（MCVD）工艺，通过将核心和包层材料的连续层沉积到具有小于0.5的羟基离子（OH-）水平的旋转玻璃管33的内表面上来制造大型光学预成型件303 百万分之几（ppm）（重量）。管然后向内折叠以形成芯棒301，其中沉积的芯材料31具有大于约5毫米的直径，并且沉积的包层材料32具有小于约15毫米的外径。机器视觉系统140,150,160通过调节管内的压力来监视和控制玻璃管的直径。此外，机器视觉系统通过根据角度位置改变其转速来监测和控制管的平直度。在形成芯棒301之后，将其等离子体蚀刻以除去污染物，然后用两个小于1.0重量ppm的羟基离子（OH-）水平的两个玻璃外套34,35包覆，以从每米长度可以绘制约400公里的单模光纤。

3. 发明授权

US07089765B2 Method of making a jacketed preform for optical fibers using OVD 失效
标题翻译：使用OVD制造光纤夹套预制件的方法
公开(公告)号：US07089765B2
公开(公告)日：2006-08-15
申请号：US10151846
申请日：2002-05-20
申请人： Hartwig Schaper , Norbert Treber , Oliver Humbach , Uwe Haken , Donald Paul Jablonowski
发明人： Hartwig Schaper , Norbert Treber , Oliver Humbach , Uwe Haken , Donald Paul Jablonowski
IPC分类号： C03B37/018
CPC分类号： C03B37/01892 , C03B37/01205 , C03B37/01211 , C03B2201/12 , C03B2201/31 , C03B2203/22 , C03B2203/36
摘要： On the basis of a known process for the production of a preform for an optical fiber for optical data transmission technology, the productivity of the process for the production of complex refractive index profiles is to be improved by providing a quartz glass substrate tube which exhibits different doping in radial direction, introducing a core glass made of synthetic quartz glass into the substrate tube and covering the substrate tube with a jacket tube. A substrate tube suitable therefor is also being provided which tube requires less core glass material for the production of the preform, whether during the internal deposition or for the core glass rod in the rod-in-tube technique. Regarding the process it is proposed according to the invention that a substrate tube be used which was obtained by vitrification of a porous tube-shaped SiO2 blank, the substrate tube being provided with a core glass layer which is produced in that to the first radial portion of the SiO2 blank there is added before the vitrification a first dopant which increases the refractive index of quartz glass. The substrate tube according to the invention has in the radial direction regions of different doping whereby it incorporates a core glass layer which has a refractive index of at least 1.459.
摘要翻译：在制造用于光学数据传输技术的光纤预制件的已知方法的基础上，通过提供具有不同的折射率分布的石英玻璃基板管来提高制造复合折射率分布的方法的生产率在径向上进行掺杂，将由合成石英玻璃制成的芯玻璃引入衬底管中并用套管覆盖衬底管。还提供了一种适用于其的基底管，该管需要较少的核心玻璃材料用于生产预成型件，无论是在内部沉积期间还是在棒状管技术中用于芯玻璃棒。关于该方法，根据本发明提出了使用通过多孔管状SiO 2空白玻璃化而获得的衬底管，衬底管设置有芯玻璃层，其为在玻璃化之前加入到SiO 2的坯料的第一径向部分的第一掺杂剂增加了石英玻璃的折射率。根据本发明的衬底管具有不同掺杂的径向区域，由此其包含折射率至少为1.459的芯玻璃层。

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