Method for producing quartz glass using a mixed powder
    55.
    发明授权
    Method for producing quartz glass using a mixed powder 有权
    使用混合粉末生产石英玻璃的方法

    公开(公告)号:US08156761B2

    公开(公告)日:2012-04-17

    申请号:US13023262

    申请日:2011-02-08

    Applicant: Tatsuhiro Sato

    Inventor: Tatsuhiro Sato

    Abstract: A mixed quartz powder contains quartz powder and two or more types of doping element in an amount of from 0.1 to 20 mass %. The aforementioned doped elements include a first dope element selected from the group consisting of N, C and F, and a second dope element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, the lanthanides and the actinides. The “quartz powder” is a powder of crystalline quartz or it is a powder of glassy SiO2 particles. It is made form natural occurring quartz or it is fabricated synthetically. The “quartz powder” may be doped. The compounding ratio of the total amount (M1) of the aforementioned first elements and the total amount (M2) of the aforementioned second elements as the ratio of the number of atoms (M1)/(M2) is preferably from 0.1 to 20. Al as well as the aforementioned doped elements is preferably included in a mixed quartz powder of this invention.

    Abstract translation: 混合石英粉含有0.1〜20质量%的石英粉和2种以上的掺杂元素。 上述掺杂元素包括选自N,C和F的第一掺杂元素和选自Mg,Ca,Sr,Ba,Sc,Y,Ti,Zr,Hf的第二掺杂元素, 镧系元素和锕系元素。 “石英粉”是结晶石英粉,或是玻璃状SiO 2粉末的粉末。 它由天然石英制成,或者由合成制成。 可以掺杂“石英粉”。 上述第一元素的总量(M1)与上述第二元素的总量(M2)的配位比优选为0.1〜20。作为原子数(M1)/(M2)的比例,优选为0.1〜20。 以及上述掺杂元素优选包括在本发明的混合石英粉末中。

    Optical fiber containing alkali metal oxide
    59.
    发明授权
    Optical fiber containing alkali metal oxide 有权
    含有碱金属氧化物的光纤

    公开(公告)号:US07536076B2

    公开(公告)日:2009-05-19

    申请号:US11801472

    申请日:2007-05-10

    Abstract: Disclosed is an optical fiber having a silica-based core comprising an alkali metal oxide selected from the group consisting of K2O, Na2O, LiO2, Rb2O, Cs2O and mixtures thereof in an average concentration in said core between about 50 and 500 ppm by weight, said core further comprising chlorine and fluorine, wherein the average concentration of fluorine in said core is greater than the average concentration of alkali metal oxide in said core and the average concentration of chlorine in said core is greater than the average concentration of alkali metal oxide in said core; and a silica-based cladding surrounding and directly adjacent the core. By appropriately selecting the concentration of alkali metal oxide dopant in the core and the cladding, a low loss optical fiber may be obtained.

    Abstract translation: 公开了一种光纤,其具有二氧化硅基核,其包含选自K2O,Na2O,LiO2,Rb2O,Cs2O及其混合物的碱金属氧化物,其中所述芯中的平均浓度为约50至500重量ppm, 所述芯还包含氯和氟,其中所述芯中的氟的平均浓度大于所述芯中的碱金属氧化物的平均浓度,并且所述芯中的平均氯浓度大于碱金属氧化物的平均浓度 说核心; 以及围绕并直接邻近芯的二氧化硅基包层。 通过适当地选择芯和包层中的碱金属氧化物掺杂剂的浓度,可以获得低损耗光纤。

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