Smith G N, Allsop T, Kalli K, Koutsides C, Neal R, Sugden K, Culverhouse P, Bennion I
Aston University, Aston Triangle, Birmingham, United Kingdom.
Opt Express. 2011 Jan 3;19(1):363-70. doi: 10.1364/OE.19.000363.
We present a novel device for the characterisation of static magnetic fields through monitoring wavelength shifts of femtosecond inscribed fibre Bragg grating and micromachined slot, coated with Terfenol-D. The device was sensitive to static magnetic fields and can be used as a vectoral sensor for the detection of magnetic fields as low as 0.046 mT with a resolution of ± 0.3mT in transmission and ± 0.7mT in reflection. The use of a femtosecond laser to both inscribe the FBGs and micromachine the slot in a single stage prior to coating the device significantly simplifies the fabrication.
我们展示了一种新型装置，用于通过监测飞秒写入的光纤布拉格光栅和微机械加工狭槽（涂有Terfenol-D）的波长偏移来表征静磁场。该装置对静磁场敏感，可用作矢量传感器，用于检测低至0.046 mT的磁场，透射时分辨率为±0.3mT，反射时分辨率为±0.7mT。在涂覆装置之前，使用飞秒激光在单个步骤中同时写入光纤布拉格光栅和微机械加工狭槽，这显著简化了制造过程。
