Title :
Fiber optic DC magnetic field sensor with alternating current phase tracing
Author :
Xin, Jianguang ; Pan, Mengchun ; Chen, Dixiang ; Zhang, Qi ; Hu, JiaFei
Author_Institution :
Coll. of Mechatron. Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
A sensitive DC magnetic field sensor based on magnetostrictive straining of optical fibers was demonstrated, which utilizes alternating current phase tracing (PTAC) homodyne scheme to eliminate phase drift. Comparison was carried out experimentally between direct current phase tracing (PTDC) and alternating current phase tracing, then expressions were presented. The results showed that the PTAC had better performance both in stabilization and linearity.
Keywords :
fibre optic sensors; magnetic sensors; alternating current phase tracing homodyne scheme; direct current phase tracing; fiber optic DC magnetic field sensor; magnetostrictive straining; Magnetic field induced strain; Magnetic field measurement; Magnetic sensors; Magnetostriction; Optical fiber couplers; Optical fiber sensors; Optical fibers; Optical interferometry; Optical sensors; Phase measurement; PTAC; PTDC; fiber optic; magnetic field sensor;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5274681
