We propose the study and the design of an ultra sensitive polarimetric torque sensor. The principle is based on the measurement of the torsion angle  induced on the shaft when a torque T is applied on it. This optical torque sensor has been tested for Aluminum, Steel and Plexiglas shafts with different geometries. The torsion angle has been measured with 0,001° accuracy. The torsion angle is then studied as a function of the applied torque. The comparison between the theoretical and the experimental results give us respectively 4.33%, 1.30% and 1.24% for the Plexiglas, the Aluminum and the Steel shafts. These results permit us good perspectives for our applications

Date Published: 5 September 2014
PDF: 9 pages
Proc. SPIE 9202, Photonics Applications for Aviation, Aerospace, Commercial, and Harsh Environments V, 920205 (5 September 2014); doi: 10.1117/12.2083402

Published in SPIE Proceedings Vol. 9202:
Photonics Applications for Aviation, Aerospace, Commercial, and Harsh Environments V
Alex A. Kazemi; Bernard C. Kress; Edgar A. Mendoza, Editor(s)