| Patent Number |
Title Of Patent |
Date Issued |
| 7245806 |
Method for manufacturing an optical fibre having variations in the refractive index |
July 17, 2007 |
| A method of manufacturing an optical fibre, which method comprises the steps of: i) providing an optical preform, ii) heating one end of said optical preform, iii) drawing an optical fibre from the heated end of the optical preform, iv) cooling the optical fibre thus drawn in step iii) |
| 7203408 |
Optical fibre |
April 10, 2007 |
| An optical fibre having an NA-value of less than 0.34, which optical fibre is built up of a core and an enveloping protective coating, wherein the protective coating forms the outer layer of the optical fibre, which optical fibre has an NA-value ranging from 0.15 to 0.30, with the overal |
| 7151249 |
Method for determining the cut-off wavelength of an optical fibre as well as a device suitable f |
December 19, 2006 |
| The present invention relates to a method and a device for determining the cut-off wavelength of an optical fiber. A first aspect of the present invention is to provide a method for determining the cut-off wavelength of an optical fiber, which method provides a stable measurement, which |
| 7116877 |
Method of manufacturing an optical fibre suitable for high transmission rates |
October 3, 2006 |
| The present invention relates to a method of manufacturing an optical fibre suitable for high transmission rates, which method comprises: i) supplying one or more glass forming precursors, and possibly a dopant, to a quartz substrate tube, ii) forming a plasma in the quartz substrate |
| 7092611 |
Method for manufacturing a bar-shaped preform as well as a method for manufacturing optical fibr |
August 15, 2006 |
| The present invention relates to a method for manufacturing a bar-shaped preform. The present invention further relates to a method for manufacturing optical fibers using the manufactured bar-shaped preform. |
| 7069749 |
Method of manufacturing a solid preform |
July 4, 2006 |
| The present invention relates to a method of manufacturing a solid preform by moving a heat source parallel to the longitudinal axis of a substrate tube, whose inner surface is coated with one or more doped or undoped glass layers, so as to collapse the substrate tube into the solid pref |
| 7068899 |
Method for the production of an optical fibre, preform, and an optical fibre |
June 27, 2006 |
| The present invention relates to a method of manufacturing an optical fiber, which method comprises the following steps: i) providing a hollow substrate tube, ii) passing doped or undoped reactive, glass-forming gases through the interior of the hollow substrate tube, iii) creating |
| 7068895 |
Method of manufacturing an optical fibre suitable for high transmission rates |
June 27, 2006 |
| The present invention relates to a method of manufacturing an optical fibre suitable for high transmission rates, which method comprises: i) supplying one or more glass forming precursors, and possibly a dopant, to a quartz substrate tube, ii) forming a plasma in the quartz substrate |
| 6882788 |
Optical fibre |
April 19, 2005 |
| The present invention relates to an optical fibre mainly consisting of silica glass, which fibre comprises: i) an inner core having a first refractive index n1 and a first diameter a; ii) an outer core surrounding the outer circumference of the inner core and having a second refractive |
| 6790529 |
Multimode fiber having a refractive index profile |
September 14, 2004 |
| The present invention relates to a multimode fiber having a refractive index profile, wherein the area surrounding the center of the fiber has a refractive index profile such that the responses of a DMD (Differential Mode Delay) measurement carried out on a fiber having a length of at le |
| 6754423 |
Single mode optical fibre, and method for the manufacture of a single mode optical fibre |
June 22, 2004 |
| The present invention relates to a method for the manufacture of a single mode optical fibre comprising a light-conductive core portion, an internal cladding portion surrounding said core portion and a jacketing portion surrounding said internal cladding portion, in which the refractive |
| 6738146 |
Method for measuring the spin in an optical fibre |
May 18, 2004 |
| The invention relates to a method for measuring the spin in an optical fibre by irradiating an optical fibre with light so as to form an interference pattern, wherein the ovality of the optical fibre, which results in a continuously changing interference pattern, is used for determin |
| 6649261 |
ROD-SHAPED PREFORM FOR MANUFACTURING AN OPTICAL FIBER THEREFROM, A METHOD FOR MANUFACTURING SUCH |
November 18, 2003 |
| The present invention relates to a rod-shaped preform for manufacturing an optical fiber therefrom, as well as to a method for manufacturing such a rod-shaped preform. The present invention furthermore relates to a method for manufacturing an optical fiber, wherein one end of a rod-shape |
| 6600769 |
Device and method for manufacturing a preform |
July 29, 2003 |
| The invention relates to a device for manufacturing a preform, wherein a carrier tube is collapsed to a preform, which device comprises a heating element forming a cylindrical envelope, which envelope defines an annular inlet opening and an annular outlet opening at opposite ends of the |
