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    Solution doping method of making an optical amplifying fiber
    231.
    发明授权
    Solution doping method of making an optical amplifying fiber 失效
    制造光放大光纤的溶液掺杂方法

    公开(公告)号：US06408652B1

    公开(公告)日：2002-06-25

    申请号：US09299666

    申请日：1999-04-27

    Applicant: Koji Okamura ,  Keiko Takeda

    Inventor： Koji Okamura ,  Keiko Takeda

    IPC: C03B37027

    CPC classification number: G02B6/02042 ,  C03B37/01211 ,  C03B37/01807 ,  C03B37/01838 ,  C03B37/01861 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/42 ,  C03B2203/29 ,  C03C13/045 ,  H01S3/06708 ,  H01S3/06729

    Abstract: An optical amplifying fiber including a clad, a first core provided inside the clad and containing Ge, a second core provided inside the first core and containing Er and Al, and a third core provided inside the second core and containing Ge. The second core has a refractive index higher than that of the clad, and the first and third cores have refractive indexes each of which is higher than that of the second core. Since the third core having the high refractive index is provided at a central portion, it is possible to make smaller a mode field diameter and hence to improve a conversion efficiency of pumping light into signal light. Further, since the second core contains Al as an amplification band width increasing element, it is possible to sufficiently ensure a wide amplification band width.

    Abstract translation: 一种光学放大光纤，包括：包层，设置在所述包层内并包含Ge的第一芯，设置在所述第一芯内并包含Er和Al的第二芯和设置在所述第二芯内并且包含Ge的第三芯。 第二芯的折射率高于包层的折射率，第一和第三芯具有高于第二芯的折射率。 由于具有高折射率的第三纤芯设置在中心部分，所以可以使模场直径变小，从而提高泵浦光转换为信号光的转换效率。 此外，由于第二芯包含Al作为放大带宽增加元件，因此可以充分确保宽的放大带宽。

    Method for making glasses containing rare earth fluorides by precipitating solution doped compounds
    232.
    发明授权
    Method for making glasses containing rare earth fluorides by precipitating solution doped compounds 失效
    通过沉淀溶液掺杂化合物制备含稀土氟化物的玻璃的方法

    公开(公告)号：US06401494B2

    公开(公告)日：2002-06-11

    申请号：US09915781

    申请日：2001-07-26

    Applicant: Huailiang Wei

    Inventor： Huailiang Wei

    IPC: C03C1702

    CPC classification number: C03C3/06 ,  C03B37/01433 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/50 ,  C03B2201/54 ,  C03C23/0095 ,  C03C2201/12 ,  C03C2201/31 ,  C03C2201/34 ,  C03C2203/50

    Abstract: A method that provides a new way to embed rare earth fluorides into silicate (or germania-doped silica) glasses by means of solution chemistry. Embedding rare earth fluorides into a silicate (or germania-doped silica) glass comprises the following steps. First, form a porous silicate core preform. Second, submerge the preform into an aqueous solution of rare earth ions. Third, remove the preform from the solution and wash the outside surfaces of the preform. Fourth, submerge the preform into an aqueous solution of a fluorinating agent to precipitate rare earth trifluorides from the solution and deposit in the pores or on the wall of the preform. This is followed by drying.

    Abstract translation: 一种通过溶液化学提供将稀土氟化物嵌入硅酸盐（或氧化锗掺杂二氧化硅）玻璃的新方法的方法。 将稀土氟化物嵌入硅酸盐（或掺锗二氧化硅）玻璃中包括以下步骤。 首先，形成多孔硅酸盐芯预制件。 第二，将预成型件浸入稀土离子的水溶液中。 第三，从溶液中取出预型件并洗涤预成型件的外表面。 第四，将预制件浸入氟化剂的水溶液中以从溶液中沉淀出稀土三氟化物，并沉积在预制件的孔或壁上。 然后干燥。

    Optical waveguide fabrication method
    233.
    发明授权
    Optical waveguide fabrication method 失效
    光波导制造方法

    公开(公告)号：US06192712B1

    公开(公告)日：2001-02-27

    申请号：US09035076

    申请日：1998-03-05

    Applicant: Takashi Saito ,  Tadahiko Hanada

    Inventor： Takashi Saito ,  Tadahiko Hanada

    IPC: C03B37022

    CPC classification number: C03B19/1453 ,  C03B19/1415 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2207/32 ,  G02B6/13 ,  G02B6/132 ,  G02B2006/12038 ,  G02B2006/12107 ,  Y02P40/57

    Abstract: A method for fabricating an optical waveguide, comprising the following steps. That is, forming an optical waveguide on surface of a substrate via an atmospheric pressure chemical vapor deposition (AP-CVD) method using a silica raw material containing an organic material, and irradiating ultraviolet light on at least a portion of that optical waveguide. The refractive index of the portion of the optical waveguide irradiated with ultraviolet light increases. Since changing the refractive index in this way enables the formation of a diffraction grating, it is possible to manufacture optical filters and wavelength dispersion devices.

    Abstract translation: 一种制造光波导的方法，包括以下步骤。 也就是说，通过使用含有有机材料的二氧化硅原料的大气压化学气相沉积（AP-CVD）法在衬底的表面上形成光波导，并在该光波导的至少一部分上照射紫外光。 用紫外线照射的光波导的部分的折射率增加。 由于以这种方式改变折射率能够形成衍射光栅，所以可以制造滤光器和波长分散装置。

    Method of making optical waveguide devices using perchloryl fluoride to make soot
    234.
    发明授权
    Method of making optical waveguide devices using perchloryl fluoride to make soot 失效
    使用高氯氟化物制造光波导器件来制造烟灰的方法

    公开(公告)号：US6109065A

    公开(公告)日：2000-08-29

    申请号：US65961

    申请日：1998-04-24

    Applicant: Robert Michael Atkins ,  Robert Scott Windeler

    Inventor： Robert Michael Atkins ,  Robert Scott Windeler

    IPC: C03B8/04 ,  C03B37/018 ,  G02B6/00 ,  G02B6/02 ,  C03B37/027

    CPC classification number: C03B37/01807 ,  C03B37/01838 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/40

    Abstract: Applicants have determined that much of the nonuniformity in solution doped preforms is due to nonuniformity of the soot layer caused by the high temperature necessary for complete reaction, and that MCVD fabrication using reaction temperature lowering gases such as nitrous oxide (N.sub.2 O) can produce more uniform soot layers. The conventional oxygen/reactant gas mixture presents a very small temperature window in which a uniform silica soot layer can be deposited without sintering. If the temperature in oxygen is too low, SiCl.sub.4 will not react completely and silicon oxychlorides will form. This degrades the soot layer and makes it unusable. If the temperature is too high the soot layer begins to sinter, decreasing the surface area and porosity. Adding a reaction temperature lowering gas lowers the reaction temperature and enables deposition of soot on the tube wall at a temperature substantially lower than the sintering temperature. This results in a more uniform, porous soot layer along the length of the preform and from one preform to another; and, in turn, the greater uniformity permits more uniform solution doping.

    Abstract translation: 申请人已经确定了溶液掺杂预制件中的大部分不均匀性是由于完全反应所需的高温引起的烟灰层的不均匀性，并且使用反应温度降低气体如一氧化二氮（N 2 O）的MCVD制造可以产生更均匀的 烟灰层。 常规的氧气/反应物气体混合物呈现非常小的温度窗口，其中可沉积均匀的二氧化硅烟灰层而不烧结。 如果氧气中的温度太低，SiCl4将不会完全反应并形成硅氧氯化物。 这会降低烟灰层，使其不可用。 如果温度太高，烟灰层开始烧结，减少表面积和孔隙率。 添加反应降温气体降低了反应温度，并且能够以基本上低于烧结温度的温度将烟灰沉积在管壁上。 这导致沿着预成型件的长度和从一个预成型件到另一个预制件的更均匀的多孔的烟灰层; 反过来，更大的均匀性允许更均匀的溶液掺杂。

    High power three level fiber laser and method of making same
    235.
    发明授权
    High power three level fiber laser and method of making same 失效
    大功率三级光纤激光器及其制作方法

    公开(公告)号：US06031849A

    公开(公告)日：2000-02-29

    申请号：US971472

    申请日：1997-11-14

    Applicant: Gary A. Ball ,  Paul Sanders

    Inventor： Gary A. Ball ,  Paul Sanders

    IPC: C03B37/018 ,  H01S3/067 ,  H01S3/30 ,  C03B37/023 ,  G02B6/26 ,  H01S3/00

    CPC classification number: H01S3/06708 ,  C03B37/01838 ,  C03B37/01853 ,  C03B37/01861 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2203/02 ,  C03B2203/10 ,  C03B2203/29 ,  G02B6/03622

    Abstract: A rare earth doped fiber for use in a fiber laser is presented. The fiber laser uses a single stripe broad area pump diode permits Yb lasing in its 3-level transition at 980 nm preferentially over the 1010 nm 4-level transition. The present fiber laser is characterized by a dual cladding fiber geometry which includes an inner rare earth doped single mode core. There is an inner cladding designed to be a multimode pump core for the pump light. The pump core is followed by a final cladding to confine the pump radiation. The present laser matches the larger/outer mode field to that of a single stripe broad area diode in order to maximize the pump intensity.

    Abstract translation: 介绍了一种用于光纤激光器的稀土掺杂光纤。 光纤激光器使用单条宽广域泵浦二极管，允许Yb激光器在980nm处的3级转换优先于1010nm的4级转换。 本发明的光纤激光器的特征在于包括内部稀土掺杂单模核心的双包层光纤几何形状。 有一个内包层，被设计为泵浦光的多模泵芯。 泵芯后面是最后的包层以限制泵浦辐射。 目前的激光器将较大/外部模式的场与单个条形宽区域二极管匹配，以使泵浦强度最大化。

    Optical fiber with smooth core refractive index profile and method of fabrication
    237.
    发明授权
    Optical fiber with smooth core refractive index profile and method of fabrication 失效
    具有光纤芯折射率分布的光纤和制造方法

    公开(公告)号：US5761366A

    公开(公告)日：1998-06-02

    申请号：US745123

    申请日：1996-11-07

    Applicant: Seung-Hun Oh ,  Young-Sik Yoon

    Inventor： Seung-Hun Oh ,  Young-Sik Yoon

    IPC: G02B6/00 ,  C03B37/018 ,  C03B37/075 ,  C03C13/04 ,  G02B6/028 ,  G02B6/036 ,  G02B6/02 ,  C03B37/023

    CPC classification number: G02B6/02276 ,  C03B37/01807 ,  C03B37/01853 ,  G02B6/03666 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/36 ,  C03B2207/80 ,  C03B2207/86

    Abstract: A method of fabricating a dispersion shifted optical fiber with a smooth annular ring refractive index profile has the steps of heating a quartz tube with an external oxygen or hydrogen burner and supplying the quartz tube with raw materials including SiCl.sub.4, GeCl.sub.4, POCl.sub.3 and CF.sub.4. O.sub.2 is later supplied. Then, the quartz tube is heated in nine passes of decreasing temperature from 1920.degree. C. to 1890.degree. C., so as to deposit a core section. In the nine passes, the quantity of SiCl.sub.4 feed flow decreases from 380 milligrams per minute to 260 milligrams per minute, the quantity of GeCl.sub.4 feed flow increases from 20 milligrams per minute to 195 milligrams per minute, and the quantity of O.sub.2 feed flow is kept constant at 1500 cubic centimeters per minute.

    Abstract translation: 制造具有光滑环形环折射率分布的色散位移光纤的方法包括用外部氧气或氢气燃烧器加热石英管并向石英管供应包括SiCl 4，GeCl 4，POCl 3和CF 4的原料的步骤。 O2随后供应。 然后，将石英管在从1920℃降至1890℃的9次通过中加热，以沉积芯部。 在九遍中，SiCl4进料流量从380毫克/分钟降至260毫克/分钟，GeCl4进料流量从20毫克/分钟增加到195毫克/分钟，并且保持O 2进料流量 常数为1500立方厘米每分钟。

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