Abstract: A passively aligned optical isolator includes laminated layers of material including two polarizing glass layers sandwiching a Faraday rotator layer. Each polarizing glass layer comprises a glass matrix containing elongated metal particles exhibiting a change in polarization axis of less than about 0.0375°/m over a distance of at least 8 mm, as measured across a major surface of the layer. The optical isolator has a contrast ratio greater than 40 dB.

Abstract: Polarizing glass articles, optical isolators including polarizing glass articles, and methods of manufacturing polarizing glass articles and optical isolators are disclosed. The methods manufacture can be used to manufacture isolators exhibiting improved contrast ratio.

Abstract: Polarizing glass articles and methods of manufacturing polarizing glass articles are disclosed. The method involves forming a polarizing layer on the surface of the glass article by ion-exchanging silver or copper into the surface.

Abstract: The invention relates to a melt-formed, high-silver, alkali-free, borosilicate glass that can be used for fabricating optical devices. For gradient index lenses, the glass can be subjected to an ion exchange process in order to introduce a less polarizable ion onto the glass surface having a higher refractive index on the surface relative to the center of the glass. The glass is unique in that the silver ions are not introduced by ion exchange. Rather, the high silver content of the glass is achieved during melting. As melted, the transparent alkali-free, borosilicate glass produced by the inventive method contains a high concentration of silver, exhibits a high refractive index and negligible attenuation at wavelengths longer than about 400 nm, making it particularly suitable for high performance fiber optic components such as gradient index or so-called GRIN lenses.

Abstract: A device for removing heat from a fiber-optic package having at least one optical element includes a terminated fiber for diverting excess optical power away from the optical element and an energy dissipating element having a capability to absorb the optical power from the terminated fiber and a high thermal conductivity sufficient to distribute heat generated from absorption of the optical power.

Abstract: Polarizing glass articles and methods of manufacturing polarizing glass articles are disclosed. Optical isolators using the polarizing glass articles have reduced coupling and surface losses when compared with conventional optical isolators.

Abstract: Graded index lenses, methods, and devices are disclosed. In certain embodiments, he lenses are made from generally cylindrical glass members having a radially varying refractive index and have a pitch less than about 0.23. Other embodiments relate to graded index lenses having a pitch between about 0.23 and 0.25 and an index gradient less than or equal to 0.3.

Abstract: A method for patterning an optical property on a optical element that includes selectively applying an energy source to an optical element to pattern an optical property thereon. A method is disclosed where the optical element includes metal halide particles dispersed in the optical element. A method is also disclosed where localized heating includes pre-heating the optical element and heating a small region of the optical element with sufficient energy for metal halide particles to relax in shape. An additional method is disclosed for patterning an optical property on an optical element that includes fusing pieces of optical element containing the optical property with pieces of optical element without the optical property by heat treatment.

Abstract: Polarized glass articles and method of manufacturing polarizing glass articles are disclosed. Optical isolators using the polarizing glass articles have reduced coupling and surface losses when compared with conventional optical isolators.

Abstract: A backplate for a display panel, a display panel embodying such backplate, and methods for producing the backplates. The backplate comprises a thin layer of a glass-ceramic that receives the active display material on its surface, the glass-ceramic being sufficiently refractory to withstand a processing temperature of at least 850° C., that has a coefficient of thermal expansion over about 40×10−7/° C., but not over about 100×10−7/° C., and that has a crystal phase selected from spinel, enstatite, wollastonite, diopside, mullite, alpha-quartz, sapphirine, forsterite, beta-quartz, other alkaline earth metal silicates and aluminosilicates and mixtures of these crystal phases.

Abstract: A method of lessening the tendency for carbon to deposit on a metal surface during thermal cracking of hydrocarbons which comprises isolating the metal surface with a glass-ceramic coating, and a coated furnace element for use in such method.

Abstract: A method of lessening the tendency of carbon to deposit on a hot metal surface, particularly a component in a furnace for thermally cracking hydrocarbons, that comprises coating a chromium-containing metal surface with a layer of porous, dry, pulverized glass and heating the coated metal to form an adherent, vitreous coating on the metal surface.

Abstract: Rib structures for containing plasma in electronic displays are formed by redrawing glass preform into fiber-like rib components. The rib components are then assembled to form rib/channel structures suitable for use in flat panel displays, such as plasma emissive displays, field emissive displays and plasma addressed liquid crystal displays.

Abstract: A method of lessening the tendency for carbon to deposit on a metal surface during thermal cracking of hydrocarbons which comprises isolating the metal surface with a glass-ceramic coating, and a coated furnace element for use in such method.

Abstract: A method for foming glass articles of substantial thickness from unstable glass compositions which normally devitrify when formed by conventional casting or molding processes, is disclosed. The method includes the steps of quench-cooling the glass to form a crystal-free glass feedstock material, and then pressure-consolidating the feedstock at a temperature between the transition temperature and the crystallization temperature of the glass.

Abstract: There is disclosed a sintered, alpha-cordierite solid solution glass-ceramic body in which the properties of coefficient of thermal expansion and modulus of rupture are stabilized and controlled by using a combination of two dopants in the glass during sintering and crystallization. There is further disclosed the method of producing such bodies, and controlling such properties, through the use of the two dopants.

Abstract: This invention relates to the production of ceramic materials which exhibit a dielectric constant in excess of 105, when measured at room temperature, and a small temperature coefficient of capacitance across the temperature range of -55.degree. to 125.degree. C., when compared to the capacitance measured at room temperature, which material has a composition encompassed within one of the following general formulae:(Bi.sub.2 O.sub.2).sup.2+ (A.sub.m-1 B.sub.m O.sub.3m+1).sup.2- ; (I)(Bi.sub.2 O.sub.2).sup.2+ (A.sub.m-1 B.sub.m Zr.sub..beta. O.sub.3m+.delta.+1).sup.2- ; and (II)(Bi.sub.2 O.sub.2).sup.2+ (A.sub.m-1 B.sub.m Mn.sub..gamma. O.sub.3m+.delta.+1).sup.2- (III)(Bi.sub.2 O.sub.2).sup.2+ (A.sub.m-1 B.sub.m Zr.sub..beta. Mn.sub..gamma. O.sub.3m+.delta.+1).sup.

Abstract: This invention relates to a method for preparing a lens or a lens array and apparatus for carrying out the method. The method comprises directing, in line of sight in a vacuum, the vapor of a substance, which is solid and transparent at ambient temperature, from a source of that vapor through a hole in a mask to form a deposit on a substrate. The mask is so positioned between the vapor source and the substrate that obscuration by the solid portions of the mask around the hole causes the deposit to assume a curved surface and function as a lens.

Abstract: There is disclosed a metal-glass composite comprising a photosensitive glass body with opacifying crystallites developed in at least a portion of the body, and a metal deposit on and/or in that portion of the glass surface coincident with the crystallized portion of the glass body, the metal deposit exhibiting useful electrical conductivity. There is further disclosed a method of producing such composite by forming crystallites in at least a portion of a glass body, subjecting at least the surface coincident therewith to a cationic ion exchange to introduce metal ions and thereafter firing the ion-exchanged glass in a hydrogen atmosphere to cause the metal ions to be reduced and subsequently migrate surfaceward and form a metal deposit.