Corning Incorporated

Michael S Dobbins

Robert E McLay

Dale Robert Powers

Carlton Maurice Truesdale

Liming Wang

Michael B Cain

John T Brown

Michael Henry Wasilewski

A Joseph Antos

Wanda Janina Walczak

James Robert Lim

Mahendra Kumar Misra

Ruchirej Yongsunthon

Jeffery Lynn Blackwell

Christine E Heckle

Hung Cheng (Henry) Lu

Victor E Olson, Iii

Francis W Voorhees

Glass substrates and methods for forming glass substrates are disclosed. The glass substrates include a planar A-side surface having a surface roughness Raof less than 0.5 nm and a planar B-side having a surface roughness Rawherein the ratio Ra:Rais greater than or equal to about 1.5. A plurality of texturing features are formed in the B-side surface. The plurality of texturing features have a peak-to-valley height H such that 0.05 &#x3bc;m&#x2266;H&#x2266;3.75 &#x3bc;m. The texturing features are distributed in the B-side surface such that a center-to-center pitch P between adjacent texturing features is at least 1.5 mm in at least one direction. The plurality of texturing features are formed in the B-side surface while the glass substrate is at a temperature T, wherein 600&#xb0; C.&#x2266;T&#x2266;1200&#xb0; C. and a viscosity of the glass substrate is from greater than 150,000 Poise and less than 10Poise.

Glass substrates with strategically imprinted B-side features and methods for manufacturing the same

This invention relates to the production of high purity fused silica glass through oxidation or flame hydrolysis of a vaporizable silicon-containing compound. More particularly, this invention is directed to the use of vaporizable, halide-free compounds in said production. In the preferred practice, a polymethylsiloxane comprises said vaporizable, halide-free compound.

Method of making fused silica by decomposing siloxanes

A method for preparing high-purity, bulk fused silica includes supplying silane gas, a gaseous fuel, and oxygen gas to a combustion burner. Silica particles are formed by passing the silane gas into a flame formed by the combustion reaction of the gaseous fuel with the oxygen gas while maintaining the ratio of the flow rate of the gaseous fuel to the flow rate of the silane gas no less than twelve and the ratio of the flow rate of the gaseous fuel to the flow rate of the oxygen gas no less than three. The silica particles formed are immediately deposited onto a hot bait to form a boule.

Method for producing bulk fused silica

The invention is a method of making an optical fiber or cane (,) that has optical properties that vary axially. Core glass (,) and clad glass (,) are fed into a furnace to form the cane or fiber. The velocities of the feeding of the clad and core are controlled so that the total combined mass per unit time is constant. The diameter of the core (,) varies along the length of the fiber or cane in accordance with the control of the velocities. The variance in the core diameter results in the variance of the axial optical properties of the fiber or cane.

Method of making a dispersion-managed optical fiber with varying the feed rates of an RIT process

Disclosed is a method and apparatus for providing reactant vapors to a utilization site. The apparatus includes a vaporization chamber enclosed by top and bottom walls, side walls and first and second end walls. The first end wall is elevated with respect to the second end wall. The reactant is supplied in liquid form to a flow distributor that delivers the liquid to that portion of the bottom wall near the first end wall. The angle with which the bottom wall is inclined with respect to horizontal is sufficient to cause the liquid to flow down the bottom wall at a rate sufficient to form a film, the thickness of which is smaller than that thickness which would support a bubble during heating of the film. The surface is heated to a temperature greater than the boiling point of the liquid, thereby converting the liquid reactant to a vapor that is delivered to the vapor utilization site.

Method and apparatus for vaporization of liquid reactants

This invention relates to the production of high purity fused silica glass through oxidation and/or flame hydrolysis of a halide-free, organosilicon-R compound in vapor form having the following properties:

Method of making fused silica

A system for delivering a liquid reactant at high flow rates to an oxidation/flame hydrolysis glass soot deposition site. A first liquid only reactant is delivered to a flash vaporization chamber to form a thin film and mixed with oxygen after vaporization. Additional vaporized reactants are thereafter mixed with the vaporized first liquid prior to delivery to an oxidation/flame hydrolysis burner to form a glass soot outer cladding layer on a soot preform. The soot preform is subsequently fused to form a high quality glass blank for drawing into optical fiber.

Growing community of inventors

Wilmington, NC, United States of America

Michael S Dobbins