Abstract:
One embodiment of the disclosure relates to a method of making an optical fiber comprising the steps of: (i) exposing a silica based preform with at least one porous glass region having soot density of ρ to a gas mixture comprising SiCl4 having SiCl4 mole fraction ySiCl4 at a doping temperature Tdop such that parameter X is larger than 0.03 to form the chlorine treated preform, wherein X = 1 1 + [ ( ρ ρ s - ρ ) 0.209748 T dop Exp [ - 5435.33 / T dop ] y SiCl 4 3 / 4 ] and ρs is the density of the fully densified soot layer; and (ii) exposing the chlorine treated preform to temperatures above 1400° C. to completely sinter the preform to produce sintered optical fiber preform with a chlorine doped region; and (iii) drawing an optical fiber from the sintered optical preform.
Abstract translation:本公开的一个实施方案涉及一种制造光纤的方法,包括以下步骤:(i)将二氧化硅基预型体暴露于具有烟炱密度的至少一个多孔玻璃区域; 在掺杂温度Tdop下将SiCl 4的SiCl 4摩尔分数为ySiCl4的气体混合物混合,使得参数X大于0.03以形成经氯处理的预制件,其中X = 11 + [(&rgr; s - &rgr;))0.209748 [... 5435.33 / T dop] y SiCl 4 3/4]和&rgr; s是完全致密的烟灰层的密度; 和(ii)将氯处理的预制件暴露于高于1400℃的温度下,以完全烧结预成型件,以制备具有氯掺杂区域的烧结光纤预制件; 和(iii)从烧结的光学预型件拉制光纤。
Abstract:
A titania and sulfur co-doped quartz glass member is provided. Due to co-doping of titania and sulfur, the quartz glass member undergoes zero expansion at a certain temperature and low thermal expansion over a wide temperature range, and is thus suited for use in a commercial EUV lithography tool. A manufacturing method and an optical member for EUV lithography are also provided.
Abstract:
The invention relates to an optical fiber comprising a gain medium which is equipped with: a core (22) which is formed from a transparent material and nanoparticles (24) comprising a doping element and at least one element for enhancing the use of said doping element; and an outer cladding (26) which surrounds the core. The invention is characterized in that the doping element is erbium (Er) and in that the enhancing element is selected from among antimony (Sb), bismuth (Bi) and a combination of antimony (Sb) and bismuth (Bi).According to the invention, one such fiber is characterized in that the size of the nanoparticles is variable and is between 1 and 500 nanometers inclusive, and preferably greater than 20 nm.
Abstract:
High purity silicon oxyfluoride glass suitable for use as a photomask substrates for photolithography applications in the VUV wavelength region below 190 nm is disclosed with the silicon oxyfluoride glass having a preferred fluorine content
Abstract translation:公开了具有优选氟含量<0.5重量%的氟氧化硅玻璃,适合用作光刻应用中的低于190nm的VUV波长区域的光掩模基板的高纯度氟氧化硅玻璃。 本发明的氟氧化硅玻璃在157nm波长下是透射的,使其特别适用于157nm波长区域的光掩模衬底。 本发明的光掩模基材是“真空”的氟氧化硅玻璃,其在真空紫外(VUV)波长区域中表现出非常高的透射率,同时保持通常与高纯度熔融石英相关的优异的热和物理性能。 除了含氟并且具有很少或不含OH含量之外,本发明的适合用作157nm的光掩模衬底的氟氧化硅玻璃的特征还在于具有小于1×10 17分子/ cm 3的分子氢和低氯水平。