Featured Application This article is an extensive overview of the different types of in-fiber
interferometric-based sensors and their technology. Abstract In-fiber interferometric-based …

The development of sensing technologies has increased the intelligence level of equipment.
It is difficult for traditional sensing technologies to meet many current application …

Displacement measurements are of significant importance in a variety of critical scientific
and engineering fields, such as gravitational wave detection, geophysical research, and …

Deformation is a crucial factor to be employed for evaluating the health state of the
equipment structure. Electrical-based sensors have been widely used for structural …

A microbubble-probe whispering gallery mode resonator with high displacement resolution
and spatial resolution for displacement sensing is proposed. The resonator consists of an air …

A cascaded micro fiber Sagnac ring (MFSR) micro displacement sensor based on the
Vernier effect is proposed and studied in this article. A single-mode optical fiber is wound …

Three fiber micro displacement sensors can be combined to realize three-dimensional (3D)
displacement sensing, but the system is complex. In this paper, a 3D displacement sensor …

The optical Vernier effect is a powerful tool for improving the sensitivity of an optical sensor,
which relies on the use of two sensor units with slightly detuned frequencies. However, an …

A dual-parameter sensor based on balloon-like single-mode fiber (SMF) cascaded with
Sagnac interferometer (SI) to measure displacement and temperature simultaneously is …

In this paper, a dual-detection-parameter SPR sensor for micro angle and micro
displacement measurement was fabricated by using graded index multimode fiber. By …