Abstract
We report a magnetostrictive composite-fiber Bragg grating (MC-FBG) magnetic field sensor based on the direct coupling of the magnetostrictive strain in an epoxy-bonded Terfenol-D particle pseudo-1-3 MC actuator with a FBG strain sensor. The MC-FBG sensor exhibits a large and fairly linear quasistatic peak wavelength shift of 0.68 nm under an applied magnetic field of 146 kA/m and a wide extrinsic magneto-optical signal frequency range up to at least 60 kHz. These quasistatic and dynamic characteristics, together with the electromagnetic interference immunity, large-scale multiplexing potential and self-reference capability, enable the application of the MC-FBG sensor in distributed magnetic field sensing over long distances.
| Original language | English |
|---|---|
| Pages (from-to) | 122-126 |
| Number of pages | 5 |
| Journal | Sensors and Actuators, A: Physical |
| Volume | 173 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Jan 2012 |
Keywords
- Fiber Bragg grating
- Long-distance distributed sensing
- Magnetic field sensor
- Magnetostrictive composite
- Terfenol-D
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Metals and Alloys
- Electrical and Electronic Engineering