A single monomode fiber-optic acoustic sensor is proposed. The acoustic wave differentially
changes the phase velocities of the polarization eigenmodes in a tension-coiled fiber …

A planar flexible fiber-optic interferometric acoustic sensor has been developed by wrapping
optimized single-mode fibers in a planar spiral form and then embedding the fiber in a thin …

Abstract Recent publications [1]–[3] have reported the detection of acoustically induced
phase modulation in optical fibers. The first two discussed such an effect for use as a …

Recently there has been much effort to develop passive fiber-optic acoustic sensors [1] that
require no electrical power at the sensor. One approach that potentially provides extreme …

We report an extrinsic Fabry–Perot-type optical-fiber interferometric sensor system
constructed by using multimode optical fibers. The intermodal noise produced by the …

The acoustic sensitivity of optical fibers is considered analytically. High sensitivity is
obtained with low bulk modulus, very thick polymeric coatings. The fiber coatings play an …

In a conventional circular cross-section single-mode fiber, built-in and induced
birefringences remove the degeneracy and make the fiber a two-Eigenmode system. We …

Fibredyne systems employ fibre-optic self-homodyne techniques for exploiting the
microphonic nature of optical fibres when conveying highly coherent light. Any strain …

A method for detecting sound using a single step-index multimode fiber is presented. The
detected signal results from differences in acoustically induced phase shifts between two …

With the availability of high quality optical fibers, numerous optical fiber sensors have been
invented. Phase modulations in single-mode fibers have been utilized to detect acoustic …