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 …

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 …

Interferometric fiber optic acoustic sensors are based on measuring the phase change of
light traveling in an optical fiber due to the strains developed in the fiber by an applied …

An overview of fibre-optic interferometry based sensing is given, particularly as it applies to
high-performance sensing applications. The operation of a fibre-optic interferometer as a …

A series of fiber-optic acoustic sensors based on the Sagnac interferometer are described.
Features of these sensors include filtering of low-frequency signal components, use of a …

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 Michelson interferometric fiber-optic acoustic sensor based on a large-area gold
diaphragm is proposed in this paper. The Michelson interferometer (MI) based on 3× 3 …

We report a new low-noise compact fiber acoustic sensor that implements a microfabricated
silicon diaphragm with a π/2 phase step combined to a single-mode fiber to form a simple …

The paper summarizes recent developments in interferometric fiber sensors for physical field
applications, based on two-beam interferometric configurations, mainly the all-fiber Mach …

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 …