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Measurement and origin of magnetostrictive noise limitation in magnetic fiber-optic sensors

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Abstract

Fiber-optic magnetic sensors based on magnetostriction yield 1/f-type noise, which has typically been limiting the sensors’ resolution at frequencies below 1 Hz. To study the origin of this noise, we devised a new experimental technique that discriminates between the transducer self-noise and various other noise sources and determines under which conditions the limiting noise source is the material’s self-noise.

© 1994 Optical Society of America

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