Dec 26, 2025
Abstract A compact modal coupling device with a total length of 4.5 mm, comprising an integrated fiber Bragg grating (FBG) and a tapered structure, is proposed to induce quasi-two
Jul 29, 2025
An optical fiber relative humidity (RH) sensor is proposed and experimentally demonstrated with a multimode-fiber taper coated with a layer of polyvinyl alcohol cascading with a
May 26, 2026
In this paper, we rigorously deduce the coupled-mode equations of a long-period fiber grating and fiber Bragg grating in their cascaded structure
Jan 08, 2026
To address these issues, this study proposes a novel tilted fiber Bragg grating (TFBG)-based optical fiber humidity sensor, coated with a composite film of polyvinyl alcohol (PVA) and
Jun 26, 2026
Interrogation of the FBG Spectra with SMS FBG is a distributed Bragg reflector, which reflects a particular wavelength of light and transmits others depending on the periodicity of the
Dec 26, 2025
The proposed Fiber Bragg Grating (FBG) sensor investigated spectral features applying finite element numerical (FEM) analysis method. The wave optics module applied the Maxwell''s
Jun 21, 2026
Fiber Bragg Gratings (FBGs) become important in modern sensing and telecommunication technologies, because its ability to reflect specific
Nov 01, 2025
His current research interests are the development of fiber-optic sensors and device, fiber Bragg grating sensors, novel sensor materials and principles, and optical measurement technologies.
Oct 25, 2025
The paper main purpose is to present the results obtained in development of a LPGFS (Long Period Grating Fibre Sensor) embedded into a polymer composite simulation model.
Mar 30, 2026
Abstract In-fiber Bragg grating filters continue to proliferate, and their applications expand with the rapid advancement of fiber optic component fabrication techniques. Mathematical models for
Nov 29, 2025
Long-period fiber gratings (LPFGs) functioning as band-reject filters have played a pivotal role in the realm of optical communication. Since their
Nov 03, 2025
In this paper, a coated cladding-reduced superimposed long period fiber grating and fiber Bragg grating structure (SLBG) is proposed, which could measure three parameters, strain,
Jan 23, 2026
In this example, the Eigenmode Expansion (EME) solver is employed to simulate the fiber Bragg grating. Through conventional parameter sweep and wavelength sweep, the computational efficiency
Apr 08, 2026
The effects of the length of the fiber between long-period grating (LPG) and fiber Bragg grating (FBG), the film refractive index and thickness on the reflection spectra of coated CLPG are discussed.
Aug 23, 2025
Caldas et al. proposed the FBG hot wire flowmeters based on long period fiber gratings (LPFGs) . Other kinds of optical fiber flowmeters based on self-heating principle were also
Jun 19, 2026
The properties of optical fibers transmission systems based on Bragg gratings and uniform fibers, which are discussed in detail in this paper. Two- fiber optic communication channels Bragg gratings are
Mar 31, 2026
The paper presents the results obtained in simulation of fiber Bragg grating (FBG) and long-period grating (LPG) sensors and their applications. The optical properties of FBG and LPG are firstly
Oct 22, 2025
For temperature sensing, the temperature sensor based on long-period gratings , fiber Bragg gratings , and multi-core optical fiber have been proposed.
Dec 05, 2025
Fiber Bragg gratings (FBGs) are intrinsically responsive to temperature and strain simultaneously. In this research, low-loss FBGs with micro-engineered temperature coefficients are
Dec 10, 2025
A low-flow flowmeter based on the bending measurement of a cladding fiber Bragg grating (CLFBG) has been proposed and demonstrated. The CLFBG is fixed in a cantilever beam
May 31, 2026
Abstract Decades have passed since the first demonstration of a long-period fiber grating (LPFG) and its practical application for sensors, and, in this period, manufacturing techniques,
Sep 10, 2025
In this paper, a temperature-compensated three-dimension vector fiber optic magnetic field sensor based on an elliptical core micro fiber Bragg grating
Jan 11, 2026
This MATLAB simulation program provides robust modeling capabilities for both long-period fiber gratings (LPFGs) and Bragg gratings, essential components in fiber optic systems.
Dec 29, 2025
A mathematical model for analyzing the temperature sensing properties of a metal-coated long-period fiber grating (LPFG) was presented. The influences of metal coatings on the temperature
Jul 15, 2025
Based on the demand for monitoring conductivity, temperature and depth (CTD) in the ocean, a cascaded-coated long-period fiber grating and fiber Bragg grating structure (LPG–FBG) is
Jan 23, 2026
An ultra-wideband orbital-angular-momentum (OAM) mode generator has been proposed and demonstrated both theoretically and experimentally, which is based on a helical long period fiber
Sep 15, 2025
Abstract In this paper, we have demonstrated a new and efficacious approach to integrating the fiber Bragg grating (FBG) by employing an Artificial Neural network (ANN) technique
Apr 08, 2026
Here we show how the numerical beam propagation feature of RP Fiber Power can be used for analyzing light propagation in fiber Bragg gratings, as long as no
Dec 13, 2025
digital version 1 Current Sensor Based on a Fiber Bragg Grating Coated by Electroplated Magnetostrictive Material Garcia-Miquel, Hector / Cebrian, Lorena / Madrigal, Javier / Sales,
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