Abstract:
Disclosed are a wollastonite crystallized glass for an artificial tooth and a method for coloring same, the method enabling a production of a uniform shade without degrading the physical properties of a crystallized glass by means of simply adding a small amount of coloring additive powder when preparing the crystallized glass.
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 characterised 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 characterised in that the size of the nanoparticles is variable and is between 1 and 500 nanometers inclusive, and preferably greater than 20 nm.
Abstract:
The invention relates to an optical fibre 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 characterised 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 fibre is characterised in that the size of the nanoparticles is variable and is between 1 and 500 nanometres inclusive, and preferably greater than 20 nm.
Abstract:
A new class of nanostructured RE-doped SiO2-base materials that display superior fluorescence properties is provided. In particular, high gain combined with a broad and flat spectral band width is observed in material composed of a high fraction of a nano-dispersed metastable silicate phase in a glassy SiO2 matrix, produced by partial devitrification (crystallization) of several glassy Al2O3/Er2O3- and Y2O3/Er2O3-doped SiO2 compositions. Also, a highly deconvoluted spectral emission, with several prominent peaks, is observed in completely devitrified material, consisting of a uniform nano-dispersion of an equilibrium silicate phase in a crystobalite SiO2 matrix. Such enhanced fluorescence properties were observed in heat treated nanopowders prepared by vapor-phase, solgel, rapid solidification, and spray-pyrolysis methods.
Abstract translation:提供了一类新型的具有优异荧光性能的纳米结构的RE掺杂SiO 2基体材料。 特别地,在通过部分失透反应产生的玻璃状SiO 2基体中的高分数纳米分散的亚稳态硅酸盐相组成的材料中观察到具有宽的和平坦的光谱带宽的高增益( 几个玻璃状的Al 2 O 3 / O 2 O 3 - 和Y 2的结晶, O 3组成的二氧化硅组合物。 此外,在完全失透的材料中观察到具有几个突出的峰的高度去卷积的光谱发射,由平底硅酸盐相在均匀的SiO 2基体中的均匀的纳米分散体组成。 在通过气相,溶胶凝胶,快速凝固和喷雾热解方法制备的热处理纳米粉末中观察到这种增强的荧光性质。
Abstract:
The present invention concerns an optical guide (100) comprising an amplifier medium including: a core (10) in a main matrix of a transparent material, the main matrix containing particules (1, 2), each particule being formed of a submicronic matrix distinct from the main matrix and doped by an active metal element, an external guiding cladding (11) in contact with the core (10). The size of the particules (1, 2) is smaller than 20 nm. The present invention also concerns a method for producing this guide.
Abstract:
A thulium doped silicate glass composition which contains SiO2, Al2O3, and La2O3 emits visible and UV light when excited by infrared light. The glass composition may also contain GeO2 and Er2O3. When excited by infrared light of about 1060 nm, the glass emits visible light at fluorescent transitions of the Tm3+ ions with major broad features at 365, 455, 472, 651, and 791 nm.
Abstract translation:含有SiO 2,Al 2 O 3和La 2 O 3的掺doped硅酸盐玻璃组合物在被红外光激发时发射可见光和UV光。 玻璃组合物还可以含有GeO 2和Er 2 O 3。 当由约1060nm的红外光激发时,玻璃在365nm,455nm,472nm,651nm和791nm处具有主要的广泛特征,在Tm 3+离子的荧光转变下发射可见光。
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:
An optical article including a core; at least one cladding layer; and a narrow fluorine reservoir between the core and the cladding layer. The fluorine reservoir has a higher concentration of fluorine than either the cladding layer or the core. One particular embodiment includes a core including a halide-doped silicate glass that comprises approximately the following in cation-plus-halide mole percent 0.25-5 mol % Al2O3, 0.05-1.5 mol % La2O3, 0.0005-0.75 mol % Er2O3, 0.5-6 mol % F, 0-1 mol % Cl.
Abstract translation:一种包括芯的光学制品; 至少一层包层; 以及在芯和包层之间的窄氟储存器。 氟储存器具有比包覆层或芯层更高的氟浓度。 一个具体实施方案包括包含卤化物掺杂的硅酸盐玻璃的核,其在阳离子加 - 卤化物摩尔百分比为0.25-5摩尔%Al 2 O 3,0.05-1.5摩尔%La 2 O 3,0.0005-0.75摩尔%Er 2 O 3,0.5-6 mol%F,0-1mol%Cl。
Abstract:
A method for manufacturing an optical fiber, the method including the steps of: providing a substrate tube; depositing high purity silica-based cladding layers on the inside of the tube; depositing a germanium-free core comprising a glass including silica, and oxides of Al, La, Er, and Tm; collapsing the substrate tube to form a preform; and drawing the preform to yield an optical fiber.
Abstract:
In an optical communication and the like, a light amplifying optical fiber is capable of amplifying an optical signal having a wavelength in the vicinity of at least 1.57 to 1.62 nullm by a high gain. A cladding (5) is formed on the side of an outer peripheral portion of a core (1) to which erbium is added, and a refractive index of the cladding is smaller than that of the core (1). A relative refractive index difference nullnullnull of the core (1) with respect to the cladding (5) is made equal to 0.3% or larger, and also equal to 1% or smaller. While a composition of the core (1) is made of ErnullAl2O3nullGeO2nullSiO2, a composition of the cladding (5) is made of SiO2, erbium is added to the entire region of the core, and concentration of this erbium is selected to be 1,000 wtppm, and also a cut-off wavelength of the optical fiber is selected to be 1,400 nm. While the cut-off wavelength of the optical fiber is made constant, since the relative refractive index difference nullnullnull is selected to be an optimum value, a diameter of the core may become an optimum value. Lowering of the gain caused by a bending loss of the optical fiber can be avoided, and an erbium absorption amount per unit length of the optical fiber can be increased, and further, a gain per unit length of the optical fiber can be increased