Featured Application In this paper, the basic concepts of fiber modes, the principle of
generation and detection of orbital angular momentum (OAM) modes are exhaustive …

We demonstrate the fabrication of long-period fiber gratings (LPFGs) written in the two-mode
fiber (TMF) by CO_2 laser. Both uniform and tilted LPFGs were fabricated to provide the light …

An optical fiber curvature sensor based on the detection of specklegrams from the facet of
multimode fiber (MMF) is realized by using a deep learning regression model. Since the …

Multicore optical fibers are especially attractive for the fabrication of curvature and shape
sensors due to the spatial distribution of the different cores. Fiber Bragg gratings have been …

In this paper, comprehensive remarks are given that focus on the main fabrications and wide
applications of helical long-period fiber gratings (HLPGs). Firstly, the techniques of …

In this Letter, we demonstrate a compellingly simple directional bending sensor based on
multicore optical fibers (MCF). The device operates in reflection mode and consists of a short …

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 approach for multimode fiber (MMF) curvature sensing based on the texture feature
of the specklegram from the fiber facet is proposed, developed and demonstrated. Different …

We propose and demonstrate an optical fiber vector curvature sensor based on a long-
period fiber grating (LPFG) inscribed in Panda type polarization-maintaining fiber (PMF) …

A reflective seawater salinity and temperature sensor based on surface plasmon resonance
(SPR) effect with multimode single-mode (MS) fiber structure has been proposed and …