Patents Assigned to Drake Fibre Technology B.V.
  • Single mode optical fiber with particular graded index as well as optical communication system
    Patent number: 7072551
    Abstract: The present invention relates to a single mode optical fibre comprising a first central region having a radius r1, a maximum refractive index value n1 and at least one second ring surrounding said first central region, which second ring has a radius r2 and a minimum refractive index value n2, wherein n2<n1. The present invention furthermore relates to an optical communication system for multi-channel signal transmission.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: July 4, 2006
    Assignee: Drake Fibre Technology B.V.
    Inventors: Mark Peter Marie Jetten, Pieter Matthijsse
  • Method for measuring the spin in an optical fibre
    Publication number: 20020067488
    Abstract: 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 determining the spin in the optical fibre.
    Type: Application
    Filed: November 9, 2001
    Publication date: June 6, 2002
    Applicant: DRAKE FIBRE TECHNOLOGY B.V.
    Inventors: Marco Groenewoud, Jozef Wilhelmus Quirinus Fianen