Abstract:
Embodiments of the invention relate to a hydrogen-resistant optical fiber with a core having a central axis. The core may include only silica, or only silica and fluorine, while a cladding region surrounding the core may be made of silica and fluorine, along with at least one of germanium, phosphorus, and titanium.
Abstract:
Die Erfindung betrifft ein Verfahren zur Fluorierung eines Sootkörpers umfassend die Schritte a) Bereitstellen eines Sootkörpers und b) Behandeln des Sootkörpers mit einer Gasmischung umfassend C n F 2n+2 mit n=1 oder 2 und Wasserstoff bei einer Temperatur im Bereich von (1280-n*250)°C bis (1220-n*100)°C.
Abstract:
For a substrate having fine convexoconcave patterns on its surface, the dimensions of the convexoconcave patterns in a vertical direction of a quartz glass substrate are controlled to be uniform with extreme accuracy and over the entire substrate surface. The quartz glass substrate is made to have a fictive temperature distribution of at most 4O°C and a halogen concentration of less than 400 ppm, or a fictive temperature distribution of at most 4O°C, a halogen concentration of at least 400ppm and a halogen concentration distribution of at most 400ppm and the etching rate of the surface of the quartz glass substrate is made uniform, whereby the dimensions of the convexoconcave patterns in a vertical direction of the quartz glass substrate are controlled to be uniform with good accuracy and over the entire substrate surface.
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%.
Abstract:
A method for manufacturing an optical article including the steps of providing a substrate tube; forming one or more cladding layers inside the substrate tube, the one or more cladding layers including an innermost cladding layer; forming a concentric fluorine reservoir adjacent to the innermost cladding layer; and forming a core adjacent to the fluorine reservoir and concentric with the one or more outer cladding layers. The fluorine concentration in the fluorine reservoir is higher than the fluorine concentration in either the core or the innermost cladding layer.
Abstract:
An optical fiber for transmitting ultraviolet ray, comprising a core (5) formed of a silica glass containing a specified amount of fluorine and a clad (6a) formed of a silica glass containing a specified amount of fluorine or boron, a clad (6b) using an ultraviolet ray transmitting resin, or a clad (6c) having hollow holes (H), a protective layer installed on the outer periphery of the clad, and a protective layer covering layer further installed on the protective layer, wherein hydrogen treatment is applied to the core, clad, and protective layer so that the core, clad, and protective cover are not deteriorated, particularly, by the radiation of ultraviolet ray with high transmittance, whereby first the transmittance of ultraviolet ray of the optical fiber can be increased and the deterioration of the optical fiber by the radiation of ultraviolet ray thereon can be eliminated and second vacuum ultraviolet ray and deep ultraviolet ray can be propagated with a high transmittance, the deterioration by the radiation of ultraviolet ray thereon can be reduced, and a prescribed sharp part can be formed at the tip part of the optical fiber by etching; an optical fiber probe (1), comprising a sharp part (3) formed by sharpening the tip part of the optical fiber (2) with etchant and a metallic film (4) for light shielding formed on the outer peripheral surface of the sharp part (3).
Abstract:
An object of the present invention is to provide a synthetic quartz glass optical material having a high optical transmittance for a radiation 157 nm in wavelength emitted from F2 excimer laser and a high resistance against irradiation of a F2 excimer laser radiation, yet having a uniformity suitable for such a fine pattenring using a F2 excimer laser, and to provide an optical member using the same. The problems above are solved by a synthetic quartz glass optical material for F2 excimer lasers having an OH group concentration of 0.5 ppm or lower, a fluorine concentration of 0.1 to 2 mol%, a hydrogen molecule concentration of 5 X 10 or lower, a difference between the maximum and minimum fluorine concentrations within 20 mol ppm, and a difference between the maximum and minimum refraction indices of 2 X 10 or lower.
Abstract translation:本发明的目的是提供一种合成石英玻璃光学材料,其对于从F2准分子激光器发射的波长为157nm的辐射具有高的透光率,并且对F2受激准分子激光辐射的照射具有高的抗性,但具有适合的均匀性 对于使用F2准分子激光器的这种精细的图案,并提供使用其的光学构件。 上述问题通过具有OH基浓度为0.5ppm以下,氟浓度为0.1〜2mol%,氢分子浓度为5×10 <16λ的F2准分子激光的合成石英玻璃光学材料来解决。 分子/ cm 3以下,最大和最小氟浓度之间的差异在20摩尔ppm以内,最大和最小折射率之间的差异为2×10 -5以下。