Optical fiber sensors present several advantages in relation to other types of sensors. These
advantages are essentially related to the optical fiber properties, ie, small, lightweight …

This review introduces several areas of importance in acoustic emission (AE) technology,
starting from signal attenuation. Signal loss is a critical issue in any large-scale AE …

Surface plasmon polaritons (SPP) can be excited on metal-coated optical fibres, enabling
the accurate monitoring of refractive index changes. Configurations reported so far mainly …

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 …

A novel acoustic sensor based on a polypropylene/poly (ethylene terephthalate)(PP/PET)
diaphragm is demonstrated. The Michelson interferometer is formed by two beams of light …

A phase interrogation method for a fiber-optic acoustic sensor based on a short-cavity
extrinsic Fabry-Perot interferometer (EFPI) is proposed with two wavelengths. A …

Acoustic emission (AE) is widely used for condition monitoring of critical components and
structures. Conventional AE techniques employ wideband or resonant piezoelectric sensors …

This paper focuses on the design, realization, and verification of a novel
phonocardiographic-based fiber-optic sensor and adaptive signal processing system for …

Side polished fiber (SPF) has a controllable average roughness and length of the side-
polishing region, which becomes a versatile platform for integrating multiple materials to …

In this paper, we propose and demonstrate a fiber-optic extrinsic Fabry-Pérot interferometer
(FPI) sensor based on an ultraviolet (UV) adhesive diaphragm for very-low-frequency …