Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1993-01-29
1994-04-19
Turner, Samuel A.
Optics: measuring and testing
By particle light scattering
With photocell detection
25022719, 25022727, 359 12, 3242441, G01B 902
Patent
active
053050754
ABSTRACT:
The fiber-optic magnetostrictive transducer system consists of a sensing element having three dual-strip fiber optic magnetostrictive transducers bonded into a single fiber Mach-Zehnder interferometer operating single mode mounted in a symmetrical orthogonal geometry. The dual-strip fiber optic magnetostrictive transducers have predictable and consistent reproducibility and are comprised of a pair of field annealed metallic glass strips bonded to a coil of optical fiber. This structure is in turn mounted on a bobbin structure where the fiber ribbon is attached to the bobbin only at the two ends of the bobbin. This reduces the possible loading of the transducer due to friction between the optical fiber and the surface of the mounting structure and at the same time provide a long sensing fiber in contact with the magnetostrictive element for high sensitivity. The symmetrical orthogonal arrangement of the transducers minimizes magnetic crosstalk and the strip form of the transducer elements maintain high directional sensitivity.
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Bucholtz Frank
Dagenais Dominique M.
Koo Kee P.
Kim Robert
McDonnell Thomas E.
Stockstill Charles J.
The United States of America as represented by the Secretary of
Turner Samuel A.
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