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Coiled-fiber sensor for vectorial measurement of magnetic field

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3 Author(s)
Annovazzi-Lodi, V. ; Dipartimento di Elettronica, Pavia Univ., Italy ; Donati, S. ; Merlo, S.

New results on the polarization properties of a matched fiber-coil (i.e. one beat length per turn) immersed in a magnetic field are described. It is shown that both components Hy and Hz, perpendicular to the coil axis, can be simultaneously measured. Sensing coils of 1-cm diameter, with multiple turns of fiber, were fabricated. Using 100-turn heads, a sensitivity of 0.01 G was achieved for the vectorial fiber sensor

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Lightwave Technology, Journal of  (Volume:10 ,  Issue: 12 )