Draka Comteq B.v.

Alcatel

Draka Comteo B.v.

Alcatel Na Cable Systems, Inc.

Drake Comteq, B.v.

Bob J Overton

Igor V Khudyakov

Michael B Purvis

Wayne Cheatle

Greg DeChristopher

Ray Lovie

Peter R Stupak

Todd Warren Gantt

Johannes Antoon Hartsuiker

Olaf Loy Storaasli

Jeff Barker

Sammy G Breeding

Charles J Welnack

Xavier Meersseman

Terry Holshouser, Sr

Pierre Sillard

Denis Molin

Louis-Anne De Montmorillon

Pascale Nouchi

Marianne Bigot-Astruc

Jeffrey Scott Barker

Simon Richard

Robert W Greer

Eric Lacroix

Olivier Tatat

Yves Lumineau

Frans Gooijer

Pieter Matthijsse

Franciscus Johannes Achten

Ivo Flammer

David Boivin

Sophie Vanpoulle

Emmanuel Petitfrere

Houching Michael Yang

Jean-Marc Testu

G&eacute;rard Orcel

Robert W Greer, Iv

William Mark Smartt

Jeffrey W Auton

Holly C Ferguson

Marie-Jos&eacute; Lina

Michael P Purvis

Srinath S Reddy

Robert L Roach

Adolphe R Lopez

Ling Li

Greg Dechristopher

A UVLED apparatus and a related method provide increased UVLED intensity to promote efficient curing of a coated glass fiber. The apparatus employs a plurality of UVLED sources, each UVLED source emitting an oscillating output of ultraviolet radiation. Typically, at least two of the UVLED sources have oscillating outputs of ultraviolet radiation that are out of phase with one another. During curing, an incompletely cured coating on a glass fiber absorbs electromagnetic radiation emitted from the UVLED sources.

Method and apparatus providing increased UVLED intensity and uniform curing of optical-fiber coatings

Disclosed is a reduced-diameter optical fiber that employs a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optional dual coating is specifically balanced for superior heat stripping in fiber ribbons, with virtually no residue left behind on the glass. This facilitates fast splicing and terminations. The improved coating system provides optical fibers that offer significant advantages for deployment in most, if not all, fiber-to-the-premises (FTTx) systems.

Reduced-diameter optical fiber

A UVLED apparatus and method provide efficient curing of an optical-fiber coating onto a drawn glass fiber. The apparatus and method employ one or more UVLEDs that emit electromagnetic radiation into a curing space. An incompletely cured optical-fiber coating, which is formed upon a glass fiber, absorbs emitted and reflected electromagnetic radiation to effect improved curing.

Method for curing glass-fiber coatings

UVLED apparatus for curing glass-fiber coatings

Disclosed is an improved optical fiber possessing a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optical fibers in accordance in the present invention may be incorporated into a reduced-diameter optical-fiber cable that possesses a high fiber count and a high cable fiber density. The high-fiber-density optical-fiber cable, which is suitable for deployments in ducts, is capable of achieving outstanding attenuation performance when subjected to temperature variations of between about &#x2212;40&#xb0; C. and 70&#xb0; C.

High-fiber-density optical-fiber cable

Disclosed is an improved, single-mode optical fiber possessing a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optional dual coating is specifically balanced for superior heat stripping in fiber ribbons, with virtually no residue left behind on the glass. This facilitates fast splicing and terminations. The improved coating system provides optical fibers that offer significant advantages for deployment in most, if not all, fiber-to-the-premises (FTTx) systems.

Microbend-resistant optical fiber

A bend-insensitive glass fiber with a novel coating system yields exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against micro-bending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optional dual coating is specifically balanced for superior heat stripping in fiber ribbons, with virtually no residue left behind on the glass. This facilitates fast splicing and terminations. The improved coating system provides optical fibers that offer significant advantages for deployment in most, if not all, fiber-to-the-premises (FTTx) systems.

A buffer tube arrangement includes an adhesive material to adhesively bond a water-swellable element to a plurality of optical fibers and/or a buffer tube.

Buffer tube with adhesively coupled optical fibers and/or water-swellable element

Disclosed is an improved optical fiber that employs a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The improved coating system provides optical fibers that are useful in all-dielectric self-supporting (ADSS) cables.

ADSS cables with high-performance optical fiber

An optical-fiber cable includes an adhesive material that adhesively couples a water-swellable element to a plurality of optical fibers.

Optical-fiber cable having optical fibers adhesively coupled to water-swellable element

Disclosed is an improved optical fiber that employs a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The improved coating system provides optical fibers that are useful in reduced-size drop cables.

Reduced-size flat drop cable

A buffered optical fiber arrangement that includes a buffer tube in which is provided optical fibers and a texturized yarn coated with a water-swellable material. The filament diameter of the yarn used in the present invention may be between about 5 microns and about 100 microns, more preferably between about 10 and about 60 microns, still more preferably between about 20 and about 40 microns. The linear density, or denier in grams per 9000 meters, of the base yarn may be between about 100 and 1000, more preferably between about 200 and 600, or still more preferably between about 250 and 350. The degree of decrease in length (the 'degree of texturizing') between the perfectly straight filaments before texturizing and the texturized filament may be between 1 percent and 90 percent, more preferably between about 2 percent and 50 percent, or still more preferably between about 5 percent and 25 percent.

Grease-free buffer optical fiber buffer tube construction utilizing a water-swellable, texturized yarn

Growing community of inventors

Lenoir, NC, United States of America

Bob J Overton