Abstract:
A method of forming an optical fiber by heat treating a consolidated glass article, doped with at least one refractive index-modifying dopant, at a temperature between about 1100?C and 1400?C and for a time between about 1 hour and 12 hours in a helium-containing atmosphere. The consolidated glass article is an optical fiber precursor. The optical fiber drawn from the heat treated consolidated glass article exhibits an attenuation lower than an optical fiber drawn from a substantially identical optical fiber precursor that has not been heat treated in accordance with the present invention.
Abstract:
A method of manufacturing an optical waveguide perform includes exposing a soot preform to an atmosphere including a chlorine-containing compound and thereby doping the soot preform with chlorine, wherein the absolute pressure of the atmosphere is greater than about 1.013 x 10 2 kPa. An apparatus for manufacturing an optical waveguide preform using a soot preform includes a furnace defining a chamber adapted to contain the soot preform and including a heating device operable to heat the chamber. A fluid control system is operable to provide an atmosphere including a chlorine-containing compound in the chamber at an absolute pressure of greater than about 1.013 x 10 2 kPa.
Abstract:
An optical fiber is disclosed in which the core region of the optical fiber is doped with Cl and F in order to reduce the viscosity mismatch between the core region and the adjacent cladding region. In one embodiment of the invention, the optical fiber is a single-mode step index optical fiber having a core region doped with Cl and F in an amount effective to produce a difference in temperature between the glass transition temperature of the core region and the glass transition temperature of the adjacent cladding region of less than about 200°C.
Abstract:
A method is described herein for sintering a frit to a glass plate where the sintered frit and glass plate are subsequently sealed to another glass plate to form a sealed glass package. Examples of the sealed glass package include a light-emitting device (e.g., organic light emitting diode (OLED) device), a photovoltaic device, a food container, and a medicine container.
Abstract:
A technique for reducing the appearance of Newton' s rings for a light emitting device is disclosed. The light emitting device (10) comprises a scattering layer (50) positioned contiguous with the inner surface (40) of a cover substrate (20) . Scattering the light reduces or eliminates the opportunity for constructive interference and as a result reduces or eliminates Newton' s ring formation.