Title :
A new three degrees-of-freedom motion sensor based on laser-self-mixing with pigtailed sources
Author :
De Lucia, Francesco ; Vietro, Michela Di ; Dabbicco, Maurizio ; Scamarcio, Gaetano
Author_Institution :
Dipt. Interateneo di Fis., Univ. degli Studi di Bari, Bari, Italy
Abstract :
Real time simultaneous measurement by remote laser source of long range longitudinal displacement and small angle wobbling of a sliding target is demonstrated. The compact self-aligned laser-self-mixing interferometer achieves 0.8 μm axial resolution over 1 m linear and 17 μrad of pitch and yaw resolution over 2 mrad angular ranges, respectively.
Keywords :
angular measurement; displacement measurement; fibre optic sensors; light interferometry; measurement by laser beam; motion measurement; semiconductor lasers; axial resolution; long range longitudinal displacement measurement; pigtailed sources; remote laser source; self-aligned laser-self-mixing interferometer; sliding target; small angle wobbling measurement; three degrees-of-freedom motion sensor; yaw resolution; Laser beams; Laser modes; Measurement by laser beam; Optical fiber polarization; Optical fiber sensors; Rotation measurement;
Conference_Titel :
Sensors, 2011 IEEE
Conference_Location :
Limerick
Print_ISBN :
978-1-4244-9290-9
DOI :
10.1109/ICSENS.2011.6127348
