Abstract

Fiber-optic acoustic sensors having sensitivity nearly 2 orders of magnitude greater than that of sensors using bare fiber are reported. These new devices utilize a composite structure wherein the fiber is embedded in a material of lower elastic modulus that serves to increase the stress, and hence the optical phase shift, in the fiber for a given pressure.

© 1979 Optical Society of America

Fiber optic acoustic sensors with composite structure: an analysis

G. B. Hocker
Appl. Opt. 18(21) 3679-3683 (1979)

Measurement of sensitivity of optical fibers for acoustic detection

J. A. Bucaro and T. R. Hickman
Appl. Opt. 18(6) 938-940 (1979)

Fiber-optic interferometric sensor for the detection of acoustic emission within composite materials

Kexing Liu, Suzanne M. Ferguson, and Raymond M. Measures
Opt. Lett. 15(22) 1255-1257 (1990)

Acoustic sensitivity of single-mode optical power dividers

S. K. Sheem and J. H. Cole
Opt. Lett. 4(10) 322-324 (1979)

Fiber-optic sensing of pressure and temperature

G. B. Hocker
Appl. Opt. 18(9) 1445-1448 (1979)