Actas de congresos
High-speed Fbg Interrogation System Insensitive To Fiber Link Attenuation For Magnetic Field Sensing
Registro en:
978-1-62841-839-2
High-speed Fbg Interrogation System Insensitive To Fiber Link Attenuation For Magnetic Field Sensing. Spie-int Soc Optical Engineering, v. 9634, p. 2015.
0277-786X
WOS:000363281800261
10.1117/12.2192674
Autor
Fracarolli
Joao Paulo V.; Floridia
Claudio; Rosolem
Joao B.; Leonardi
Ariovaldo A.; Dini
Danilo C.; Dilli
Paulo Iva G.; da Silva
Erlon V.; dos Santos
Marceu C.; Fruett
Fabiano
Institución
Resumen
A high-speed FBG interrogation method for magnetic field sensing is proposed. A FBG attached to a magnetostrictive material (Terfenol-D) was used to show the output invariance when increasing the attenuation on the optical link. This was achieved by computing the ratio between the sensing and the reference signals, both generated using different DFB lasers properly tuned. The output remained invariant to attenuations up to 12 dB. Also, the system's interrogation speed was tested and compared to a commercial solution. While the commercial model was limited by its 6 kHz sampling frequency, this method provided responses up to 60 kHz. 9634