Optical fibers have been involved in the area of sensing applications for more than four
decades. Moreover, interferometric optical fiber sensors have attracted broad interest for …

This paper describes a novel optical system for clinical diagnosis of dental enamel based on
its elasticity. Current examination techniques are typically destructive, and frequently …

A high-sensitivity frequency domain laser based ultrasonic system is presented which uses
a low power, amplitude modulated continuous wave (cw) laser source for acoustic wave …

Ultrasonic vibration systems are widely used in the field of material processing, their
performance and stability are crucial for practical applications. The effect of force load on the …

A material sensing apparatus comprises an excitation source configured to induce waves in
a workpiece, and an optical waveguide interferometer configured to sense the induced …

In this paper a new ultrasonic testing system is described that utilizes noncontact optical
methods to generate and detect surface acoustic waves (SAWs) and has significant …

A sensing apparatus includes an excitation source configured to induce waves in a target,
and an optical waveguide interferometer configured to sense the induced waves in the …

An optical non-contact ultrasonic testing system is presented. It uses broadband surface
acoustic wave impulses generated with a cylindrical lens focused laser line source. The …

A sensing apparatus comprises an excitation source configured to induce waves in a target,
and a fiber optic interferometer configured to sense the induced waves in the target. The …

A new optical microphone was developed based on complementary metal–oxide–
semiconductor (CMOS)—microelectromechanical systems (MEMS) micromachining …