The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2012
Filed:
Sep. 21, 2009
Maurizio Dabbicco, Bari, IT;
Gaetano Scamarcio, Bari, IT;
Simona Ottonelli, Ruvo di Puglia, IT;
Angela Intermite, Grottaglie, IT;
Branimir Radisavljevic, Rudnica, YU;
Maurizio Dabbicco, Bari, IT;
Gaetano Scamarcio, Bari, IT;
Simona Ottonelli, Ruvo di Puglia, IT;
Angela Intermite, Grottaglie, IT;
Branimir Radisavljevic, Rudnica, YU;
Universita degli Studi di Bari, Bari, IT;
Abstract
A system measures the strain of an object. The system includes a laser source for generating an output radiation, a strainable optical fiber having first and second facets, and means for calculating a measure of a strain of the optical fiber. The first facet is coupled to the laser source to receive the output radiation and transmit a guided radiation over the optical fiber towards the second facet. The second facet is adapted to receive the guided radiation and to reflect a corresponding reflected radiation towards the first facet. The laser source is a self-mixing type adapted to receive at least part of the reflected radiation and to mix the output radiation with the received radiation. The calculating means calculate the measure of the strain of the optical fiber based on a self-mixing effect in the laser source that is caused by the linear displacement of the second section.