FIBRE MONITORING IN OPTICAL NETWORKS

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Abstract

A method of monitoring (200) an optical fibre comprises modulating (210) an optical signal with a traffic signal; modulating (220) the optical signal with an incoherent optical frequency domain reflectometry, IOFDR, test signal; transmitting (230) the doubly modulated optical signal onto an optical fibre at a first end of the fibre; detecting (240) scattered radiation output from the first end of the fibre; and analysing (250) the detected scattered radiation using incoherent optical frequency domain reflectometry to determine a distance to a break in the optical fibre. Apparatus suitable for carrying out the method is also described, as well as an optical communications network employing the method.

Classe Tecnologica

G - Physics

Patent Office

United States Patent and Trademark Office

Numero Deposito

US2011217036

Anno Deposito

2008

Anno Concessione

2011

Inventori Pugliesi

  • Campanelli Carlo

Tutti gli inventori

  • Carlo Campanelli
  • Roberto Magri

Titolari pugliesi

  • Non ci sono titolari pugliesi

Tutti i titolari

  • Telefonaktiebolaget I.M. Ericsson