Light has found applications in data transmission, such as optical fibers and waveguides
and in optoelectronics. It consists of a series of electromagnetic waves, with particle …

The review summarizes recent studies on D-shaped optical fibers and their recent
applications in optical sensors. The configurations and working principles of D-shaped …

A simple, compact, and highly sensitive optical fiber directional bend sensor is presented.
This device consists of a lateral-offset splicing joint and an up-taper formed through …

In this paper, we demonstrate a high sensitivity refractive index (RI) sensor with D-shaped
structure covered with gold and graphene film. Specifically, the effect of structural …

Optical fiber curvature sensors have been considered as a promising option for human
motion detection due to its good toughness, bending flexibility and anti-electromagnetic …

Long period grating was UV inscribed into a multicore fiber consisting of 120 single mode
cores. The multicore fiber that hosts the grating was fusion spliced into a single mode fiber at …

We demonstrate a fiber-optic 3D vector displacement sensor based on the monitoring of
Bragg reflection from an eccentric grating inscribed in a depressed-cladding fiber using the …

In this paper, a D-shape fiber long period fiber grating (DLPFG) curvature sensor has been
theoretically and experimentally investigated. Different from previous reported long period …

A novel, simple, and compact optical fiber directional bending vector sensor based on Mach-
Zehnder interferometer (MZI) is proposed and experimentally demonstrated. The device …

In this paper, a highly sensitive vector curvature sensor based on two juxtaposed fiber
Michelson interferometers (MI) with Vernier-like effect has been proposed and verified …