Abstract

A fiber-optic magnetic-field sensor is constructed by bonding a single-mode fiber to a nickel cylinder. The magnetic field, by means of the magnetostrictive effect, alters the state of polarization of light in the fiber. A sensitivity of 1.76 × 10⁻² rad/m Oe is demonstrated, permitting detection of fields as small as 4.4 × 10⁻⁶ Oe/m of fiber.

© 1981 Optical Society of America

Metallic-glass fiber-optic phase modulators

Frank R. Trowbridge and Ronald L. Phillips
Opt. Lett. 6(12) 636-638 (1981)

Characteristics of fiber-optic magnetic-field sensors employing metallic glasses

K. P. Koo and G. H. Sigel
Opt. Lett. 7(7) 334-336 (1982)

Magneto-optic coupling coefficient for fiber interferometric sensors

J. H. Cole, N. Lagakos, J. Jarzynski, and J. A. Bucaro
Opt. Lett. 6(5) 216-218 (1981)

Temperature sensing by mode–mode interference in birefringent optical fibers

W. Eickhoff
Opt. Lett. 6(4) 204-206 (1981)

Birefringent optical filters in single-mode fiber

Y. Yen and R. Ulrich
Opt. Lett. 6(6) 278-280 (1981)