System for optical fiber strain measure

Torna indietro

Abstract

A system is described for the measure of the strain of an object. The measurement system includes a laser source for generating an output radiation, includes a strainable optical fiber having a first and a second facet, wherein the first facet is coupled to the laser source for receiving at least part of the output radiation and for transmitting therefrom a guided radiation over the optical fiber towards the second facet, and includes means for calculating a measure of the strain of at least part of the optical fiber. The at least part of the optical fiber includes a first section and a second section, wherein the second section is movable by the strain of the at least part of the optical fiber according to a linear displacement of the second section respect to the first section along the at least part of the optical fiber. The second facet is adapted to receive the guided radiation and to reflect therefrom a corresponding reflected radiation towards the first facet. The laser source is a self-mixing type which is adapted to receive at least part of the reflected radiation guided from the second facet to the first facet and to mix the output radiation with the received radiation. The calculating means are adapted to calculate the measure of the strain of the at least part of the optical fiber through the linear displacement of the second section measured by the self-mixing effect in the laser source.

Classe Tecnologica

G - Physics

Patent Office

United States Patent and Trademark Office

Numero Deposito

US8234081

Anno Deposito

2009

Anno Concessione

2010

Inventori Pugliesi

Tutti gli inventori

  • Maurizio Dabbicco
  • Ernesto Santandrea
  • Simona Ottonelli
  • Angela Intermite
  • Branimir Radisavljevic

Titolari pugliesi

Tutti i titolari

  • Università Degli Studi Di Bari Aldo Moro