Title :
Directivity of the Magnetostrictive Fiber-Optic Interferometric Transducers
Author :
Shi, Changhai ; Chen, Jianping ; Li, Xinwan ; Ye, Ailun ; Zhou, Junhe
Author_Institution :
State Key Lab. on Fiber-Opt. Local Area Network & Adv. Opt. Commun. Syst., Shanghai Jiao Tong Univ.
Abstract :
Directivity in magnetostrictive fiber-optic interferometric transducers was analyzed. Comparison was carried out theoretically and experimentally on cylindrical and racetrack transducers, and expressions were presented. The results show that the racetrack transducer has better performance both in sensitivity and directivity for it has a length of magnetostrictive strip in parallel to the measured field
Keywords :
fibre optic sensors; interferometry; magnetostrictive devices; transducers; cylindrical transducer; magnetostrictive fiber-optic interferometric transducers; magnetostrictive strip; racetrack transducer; Magnetic analysis; Magnetic anisotropy; Magnetic field induced strain; Magnetic sensors; Magnetostriction; Optical fiber sensors; Perpendicular magnetic anisotropy; Sensor arrays; Strips; Transducers; Directivity; magnetostrictive fiber-optic interferometric sensors; sensitivity; transducers;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2006.881438
