Title :
Analysis of a new magneto-optic angular displacement sensor using jones matrix approach
Author :
Melikhov, Y. ; Lee, S.J. ; Song, S.H. ; Hauser, H. ; Jiles, D.C.
Author_Institution :
Center for Nondestructive Evaluation, Iowa State Univ., Ames, IA
Abstract :
A new magneto-optic angular displacement (MOAD) sensor is reported for measuring small angular and spatial displacements of the surfaces of the material remotely. It is based on observation of changes in the intensity of the reflected polarized light beam, which passes through a magneto-optic (MO) thin garnet film with the controlled periodical displacement of one domain wall. Using Jones matrices for optical elements in the MOAD sensor system, simulated intensity of the MOAD sensor was obtained and compared with experimentally detected intensity. Results from simulation are in good agreement with experimental values. The MOAD sensor allows observation of angular displacement of a material located remotely from the laser and detector with resolution of 0.01deg
Keywords :
angular measurement; displacement measurement; garnets; magneto-optical sensors; optical elements; Jones matrix approach; MOAD sensor system; magneto-optic angular displacement sensor; magneto-optic thin garnet film; optical elements; Displacement control; Displacement measurement; Garnet films; Magnetic analysis; Magnetic materials; Magnetic sensors; Optical materials; Optical polarization; Optical sensors; Sensor systems;
Conference_Titel :
Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2005. 28th International Spring Seminar on
Conference_Location :
Wiener Neustadt
Print_ISBN :
0-7803-9325-2
DOI :
10.1109/ISSE.2005.1490998
