A method for manufacturing an SiO.sub.2TiO.sub.2 based glass upon a target by a direct method, includes: an ingot growing step of growing an SiO.sub.2TiO.sub.2 based glass ingot having a predetermined length on the target by flame hydrolysis by feeding a silicon compound and a titanium compound into an oxyhydrogen flame, wherein the ingot growing step includes: a first step of increasing a ratio of a feed rate of the titanium compound to a feed rate of the silicon compound as the SiO.sub.2TiO.sub.2 based glass ingot grows until the ratio reaches a predetermined value; and a second step of gradually growing the SiO.sub.2TiO.sub.2 based glass ingot after the ratio has reached the predetermined value in the first stage with keeping the ratio within a predetermined range.

A method for continuous production of photo-sensitive glass bodies, glass bodies, and structured glass articles are provided. The glass bodies include a glass having Si.sup.4+, at least one crystal-agonist, at least one crystal-antagonist, and at least one pair of nucleating agents. The glass may be used in a method for structuring of glass. The glass bodies may be structured and/or unstructured and used in different applications such as in components or as components in micro-technology, in micro-reaction-technology, in electronic packaging, for micro-fluidic components, in or as FED spacer, for bio-technology (for example titer plates), as interposer, and in or as three-dimensional structurable antennae.

A method for continuous production of photo-sensitive glass bodies, glass bodies, and structured glass articles are provided. The glass bodies include a glass having Si.sup.4+, at least one crystal-agonist, at least one crystal-antagonist, and at least one pair of nucleating agents. The glass may be used in a method for structuring of glass. The glass bodies may be structured and/or unstructured and used in different applications such as in components or as components in micro-technology, in micro-reaction-technology, in electronic packaging, for micro-fluidic components, in or as FED spacer, for bio-technology (for example titer plates), as interposer, and in or as three-dimensional structurable antennae.

Quartz solid solution glass ceramics and precursors thereof are described, which are characterized by very good mechanical and optical properties and can be used in particular as restorative materials in dentistry.

An optical fiber for efficient coupling of optical signals to photonic devices. The optical fiber includes a Cl doped tapered core region with a changing outer diameter and changing maximum core refractive index to provide improved coupling at wavelength of interest to photonic devices. The photonic devices may be, for example, silicon photonic devices with an operating wavelength at or near 1310 nm, or at or near 1550 nm.

An optical fiber for efficient coupling of optical signals to photonic devices. The optical fiber includes a Cl doped tapered core region with a changing outer diameter and changing maximum core refractive index to provide improved coupling at wavelength of interest to photonic devices. The photonic devices may be, for example, silicon photonic devices with an operating wavelength at or near 1310 nm, or at or near 1550 nm.

Provided is a method for producing a glass material whereby a glass material less likely to undergo solarization can be obtained. A method for producing a glass material includes the steps of: preparing a glass; and subjecting the glass to heat treatment for six or more hours at a temperature of not lower than (Tg?70?) C and not higher than (Tg+40?) C where a glass transition point of the glass is represented as Tg (? C.).

Provided is a method for producing a glass material whereby a glass material less likely to undergo solarization can be obtained. A method for producing a glass material includes the steps of: preparing a glass; and subjecting the glass to heat treatment for six or more hours at a temperature of not lower than (Tg?70?) C and not higher than (Tg+40?) C where a glass transition point of the glass is represented as Tg (? C.).

A soda-lime-silica glass container and related methods of manufacturing. A black-strikable glass composition having a base glass portion and a latent colorant portion is prepared. The base glass portion includes soda-lime-silica glass materials and one or more blue colorant materials, and the latent colorant portion includes cuprous oxide (Cu.sub.2O), stannous oxide (SnO), bismuth oxide (Bi.sub.2O.sub.3), and carbon (C). Glass containers may be formed from the black-strikable glass composition, and these glass containers may be heated to a temperature greater than 600 degrees Celsius to strike black therein. The glass containers formed from the black-strikable glass composition may be inspectedbefore or after strikingby infrared inspection equipment.

A soda-lime-silica glass container and related methods of manufacturing. A black-strikable glass composition having a base glass portion and a latent colorant portion is prepared. The base glass portion includes soda-lime-silica glass materials and one or more blue colorant materials, and the latent colorant portion includes cuprous oxide (Cu.sub.2O), stannous oxide (SnO), bismuth oxide (Bi.sub.2O.sub.3), and carbon (C). Glass containers may be formed from the black-strikable glass composition, and these glass containers may be heated to a temperature greater than 600 degrees Celsius to strike black therein. The glass containers formed from the black-strikable glass composition may be inspectedbefore or after strikingby infrared inspection equipment.