Corning Incorporated

Corning Optical Communications LLC

Ravindra Kumar Akarapu

Amit Halder

Priyank Paras Jain

Garrett Andrew Piech

Xinghua Li

James Andrew West

Sergio Tsuda

Barada Kanta Nayak

Ming-Jun Li

Venkata Adiseshaiah Bhagavatula

Dale Robert Powers

Kenneth Edward Hrdina

Jacob George

Joel P Carberry

John Forrest Wight, Jr

Nikolaos Pantelis Kladias

Vikram Bhatia

Christopher John Malarkey

Chunfeng Zhou

Christopher Scott Thomas

Steven Akin Dunwoody

David Alan Deneka

John Himmelreich

John Michael Jewell

Charlotte Diane Milia

Derik Alan Bruins

Kaitlin Smith Olmstead

Weidong Li

Vincent Matteo Tagliamonti

Yuanjie Jiang

An extrusion system () includes at least one sensor () to detect localized presence of oil () on an exterior surface () or skin of wet extrudate material (e.g., ceramic material having a honeycomb cross-sectional shape), and at least one infrared emitting device () configured to impinge infrared emissions on at least a portion of the exterior surface responsive to one or more sensor signals. Localized impingement of infrared emissions may reduce presence of oil streaks () without undue differential drying of the extrudate skin (), and avoid surface fissures that would otherwise result in fired ceramic bodies. Separately controllable infrared emitters (), or at least one controllable infrared blocking or redirecting element (), may be used to impinge infrared emissions on selected areas. A humidification section () arranged downstream of infrared emitters () may be used to at least partially rehydrate the wet extrudate material, if necessary.

Systems and methods for reducing surface oil streaks on wet extrudate by irradiation

An extrusion system () according to certain aspects includes at least one infrared emitting device () arranged in a generally cylindrical shape with a hollow interior. The at least one infrared emitting device () is positioned downstream of an outlet of an extrusion die () to irradiate a perimeter of wet extrudate material in a uniform manner to form stiffened wet extrudate material () before such material is received by an extrudate support channel (). The at least one infrared emitting device () generally uniformly stiffens the skin of the wet extrudate material () to resist mechanical deformation of the extrudate material during subsequent handling steps. Such skin stiffening allows for increased tolerance of handling forces and permits extrusion of softer wet extrudate material without compromising the shape of a fired ceramic product.

Systems and methods for stiffening wet extrudate by circumferential irradiation

In some embodiments, a method for processing an optical fiber includes: drawing an optical fiber through a draw furnace, conveying the optical fiber through a flame reheating device downstream from the draw furnace, wherein the flame reheating device comprises one or more burners each comprising: a body having a top surface and an opposing bottom surface, an opening within the body extending from the top surface through the body to the bottom surface, wherein the optical fiber passes through the opening, and one or more gas outlets within the body; and igniting a flammable gas provided by the one or more gas outlets to form a flame encircling the optical fiber passing through the opening, wherein the flame heats the optical fiber by at least 100 degrees Celsius at a heating rate exceeding 10,000 degrees Celsius/second.

Methods and systems for processing optical fiber

A thin-walled honeycomb body () having a plurality of repeating cell structures () formed of intersecting porous thick walls (V,H) and thin walls (V,H). Each repeating cell structure () is bounded on its periphery by the thick walls (V,H) of a first transverse thickness (Tk) and the thin walls (V,H) have a second transverse thickness (Tt) that subdivides each repeating cell structure () into between 7 and 36 individual cells (). In the thin-walled honeycomb body (), the first transverse thickness (Tk) of the thick walls (V,H) is less than or equal to 0.127 mm (0.005 inch) and the second transverse thickness (Tt) of the thin walls (V,H) is less than or equal to 0.0635 mm (0.0025 inch), and Tk&#x3e;Tt. Honeycomb extrusion dies and methods of manufacturing the thin-walled honeycomb body () having thick walls (V,H) and thin walls (V,H) are provided.

Multi-wall thickness, thin-walled honeycomb bodies, and extrusion dies and methods therefor

A method of manufacturing a honeycomb body, comprising extruding honeycomb extrudate () in an axial direction (A), the honeycomb extrudate () having an outer periphery (); and laser machining in situ the honeycomb extrudate () to form a laser cut in the honeycomb extrudate. A system for in situ cutting a wet green ceramic extrudate, comprising a laser () configured to irradiate laser energy to an outer periphery of a wet green ceramic article, the laser energy adapted to cut through at least a portion of the outer periphery ().

Methods of laser machining wet cellular ceramic extrudate for honeycomb body manufacture

A method for laser processing a transparent workpiece includes forming a contour line that includes defects, by directing a pulsed laser beam output by a beam source through an aspheric optical element positioned offset in a radial direction from the beam pathway and into the transparent workpiece such that the portion of the pulsed laser beam directed into the transparent workpiece generates an induced absorption within the transparent workpiece that produces a defect within the transparent workpiece. The portion of the pulsed laser beam directed into the transparent workpiece includes a wavelength &#x3bb;, an effective spot size w, and a non-axisymmetric beam cross section having a minimum Rayleigh range Zin an x-direction and a minimum Rayleigh range Zin a y-direction. Further, the smaller of Zand Zis greater than where Fis a dimensionless divergence factor comprising a value of 10 or greater.

Apparatuses and methods for laser processing transparent workpieces using non-axisymmetric beam spots

A method and system to dry crack-free and high strength skin including an inorganic binder of an average particle size (D) in a range between 10 nm and 700 nm on a porous ceramic body. The method includes supporting the honeycomb body on an end face such that axial channels and outer periphery are substantially vertical. A gas is flowed past the honeycomb body substantially parallel to the axial channel direction, substantially equally around the outer periphery of the skin, to uniformly dry the skin to form a partially dried skin under mild conditions. Then the partially dried skin may be dried more severely resulting in rapidly dried crack-free and high strength skin.

Method and system for crack-free drying of high strength skin on a porous ceramic body

Devices and methods for optical-fiber processing for connector applications are disclosed, wherein the devices and methods utilize a quantum cascade laser operated under select processing parameters to carry out end face polishing. The method includes supporting the optical fiber in a ferrule so that a bare end section of the fiber protrudes from an end of the ferrule by a protrusion distance. The method then includes irradiating the end face with light from the quantum cascade laser to polish the end face. The quantum cascade laser can also be used to form a bump in a central portion of the end face, wherein the bump facilitates physical contact between respective end faces of connected optical fibers.

Quantum cascade laser devices and methods for optical-fiber processing for connector applications

Growing community of inventors

Painted Post, NY, United States of America

Ravindra Kumar Akarapu