Abstract:
An optical waveguide including a core having silica, Al, a non-fluorescent rare-earth ion, Ge, Er, and Tm. The non-fluorescent rare-earth ion may be La. Exemplary compositions concentrations are Er is from 15 ppm to 3000 ppm, Al is from 0.5 mol% to 12 mol%, La is less than or equal to 2 mol%, Tm is from 15 ppm to 10,000 ppm; and the Ge is less than or equal to 15 mol%. The core may further include F. An exemplary concentration of F is less than or equal to 6 anion mol%.
Abstract:
To provide quartz-type glass for a microlithographic projection exposure apparatus, which contains at least 51 mass% of SiO 2 and which further contains at least one member selected from the group consisting of lanthanum, aluminum, hafnium, nitrogen, scandium, yttrium and zirconium. It is a material which is useful for an illumination system for a microlithographic projection exposure apparatus or as a projection object lens and has a refractive index at 248 nm larger than 1.508 of quartz glass and a refractive index at 193 nm larger than 1.560 of quartz glass and which can be small-sized.
Abstract:
A method of making an erbium-doped optical fiber for use in optical amplifiers according to the present invention includes the step of providing a substrate tube. High purity silica-based cladding layers are deposited on the inside of the tube. A core glass that includes silica, Al, a non-fluorescent rare-earth ion, Ge, Er, and Tm is then depositedin the tube. The non-fluorescent rare-earth ion may be La and the core may further include F. The tube is then collapsed to form a preform. Finally, the preform is drawn to yield optical fiber. The core glass may be substantially homogeneous. The core may include at least two regions, wherein one region contains a substantially different Er toTm ratio than the other region. Said regions may be in an annular arrangement. The core of such a waveguide may be made with multiple MCVD passes, multiple sol-gel passes or with multiple soot deposition, solution doping, and consolidation passes.
Abstract:
An optical waveguide including a core having silica, Al, a non-fluorescent rare-earth ion, Ge, Er, and Tm. The non-fluorescent rare-earth ion may be La. Exemplary compositions concentrations are Er is from 15 ppm to 3000 ppm, Al is from 0.5 mol% to 12 mol%, La is less than or equal to 2 mol%, Tm is from 15 ppm to 10,000 ppm; and the Ge is less than or equal to 15 mol%. The core may further include F. An exemplary concentration of F is less than or equal to 6 anion mol%.
Simplified title:制造用于延伸的L-带(L-BAND)及S-带(S-BAND)放大之硅酸盐波导组合物之方法 A Method for Manufacturing Silicate Waveguide Compositions for Extended L-Band and S-Band Amplification
Abstract in simplified Chinese:根据本发明之制造用于光学放大器中掺杂铒之光学纤维之方法,其包括以下步骤:提供底材管(substrate tube),高纯度、以硅石为主之覆套层系沉积于该管之内部,然后将内核玻璃,其包含硅石、Al、一种非萤光之稀土金属离子、Ge、Er、及Tm,沉积于该管中。该非萤光之稀土金属离子可为La,及该内核可进一步包含F。然后将该管陷缩(collapsed)以形成预成型物。最后,拉伸该预成型物以产生光学纤维。该内核玻璃可为实质上均匀的。该内核可包含至少两个区域,其中一个区域包含与另一个区域实质上不同之Er比Tm比。该等区域可呈环状排列。此种波导之内核可系借由多重MCVD(化学蒸气沉积)信道(passes)、多重溶胶-凝胶信道、或以多重煤灰(soot)沉积、溶液掺杂、及固结(consolidation)信道而制造。
Abstract in simplified Chinese:本案系揭示一种光学波导件,其包含具二氧化硅、A1、非萤光稀土离子、Ge、Er及Tm之核芯。非萤光稀土离子可为La。示范之组合物浓度:Er为15ppm至3000ppm,A1为0.5莫耳%至12莫耳%,La小于或等于2莫耳%,Tm为15ppm至10,000ppm,且Ge小于或等于15莫耳%。核芯尚可含有F。F之示范浓度小于或等于6阴离子莫耳%。