Jun 14, 2026
Lin et al. (contribution 10) introduced a novel algorithm for the automatic demodulation of surrounding refractive index (SRI) variations in a
Apr 30, 2026
A number of techniques to address fiber Bragg grating (FBG) sensors have been described in recent years. This paper discusses the use of wavelength division multiplexing (WDM) couplers to perform
Jan 01, 2026
The demodulator uses UV-induced birefringence of chirped fiber grating to interrogate the wavelength shift of a sensor FBG. The demodulator is composed of a polarizing beam splitter, a polarization
May 12, 2026
This paper presents an innovative and efficient shape-sensing approach for optical fiber Bragg grating (FBG) arrays, employing the dual-comb spectroscopy (DCS) technique for demodulation.
Feb 15, 2026
We demonstrated in this work a filterless, multi-point and temperature-independent FBG (fiber Bragg grating) dynamical demodulator using pulse-width-modulation (PWM).
May 27, 2026
This paper describes the design, experimental evaluation and performance results of a tunable optical filter based on hybrid microoptoelectromechanical systems (MOEMS) technology. The tunable filter
Sep 13, 2025
In this paper, a photoelectric conditioning circuit for fiber Bragg grating demodulation is designed. The experimental results show that this method can accurately demodulate fiber Bragg
May 11, 2026
In this study, we propose a demodulator for fiber Bragg grating (FBG) ultrasonic sensor array using arrayed waveguide grating (AWG). Wavelength modulation in the FBG center
Apr 23, 2026
Fibre Bragg gratings are one of the most popular sensors with a huge number of applications. Their most important advantage is signal modulation consisting in shifting the spectrum
Dec 21, 2025
A high-performance, low-cost demodulation system is essential for fiber-optic sensor-based measurement applications. This paper presents a
Jun 25, 2026
It uses polarization-maintaining fiber Bragg grating (PM-FBG) as a frequency discriminator. The basic principle and preliminary results of linearity
Aug 01, 2025
This paper presents a new method of demodulating the spectrum of fiber Bragg grating (FBG) based sensors by employing deep convolutional neural networks (DCNN).
Jul 25, 2025
In this paper, a novel demodulation method for vibration sensors based on ultra-weak fiber Bragg grating (FBG) using a self-referencing signal and DBN is proposed.
Nov 17, 2025
A super high-speed fiber grating demodulator capable of simultaneously demodulating four grating channels is designed. The demodulator uses Fourier domain mode locked laser which consists of a
Apr 18, 2026
The vibration measurement of spacecraft structures in space applications has raised higher requirements for the demodulation frequency of the fiber Bragg grating (FBG) demodulator. In
Dec 31, 2025
A simple all optical fibre wavelength shift detection scheme, for use with fibre Bragg grating sensing systems, is described. The system is based on the use of a wavelength division coupler
Apr 25, 2026
Aiming at dynamic torque measurement system, fiber Bragg grating sensing principle is used to measure rotating shaft torque, and a fiber Bragg grating demodulation system based on
Jan 05, 2026
Abstract To solve the problem of tunable semiconductor lasers in a multichannel Fiber Bragg Grating (FBG) real-time demodulation system, where the milliwatt output power limits channel
Feb 11, 2026
In order to improve the all kind of fiber Bragg grating (FBG) demodulation system, we make-up a fiber grating temperature demodulation system, which is consist of fiber tunable F-P filter, signal
May 26, 2026
A fiber Bragg grating (FBG) is a type of distributed Bragg reflector constructed in a short segment of optical fiber that reflects particular wavelengths of light and
Oct 14, 2025
The intensity demodulation technology of fiber Bragg gratings (FBG) is typically realized by detecting the output light power. Traditional methods, such as DC power detection, have a low signal
Apr 16, 2026
A demodulation algorithm for fiber Bragg grating (FBG) sensor is presented. The proposed demodulation algorithm evaluates the wavelength shift in the reflected spectrum of an FBG sensor. It computes the
Sep 07, 2025
For applications at extremely high temperatures, where even Type II gratings might degrade or standard silica fibers drift, regenerated fiber Bragg gratings (RFBGs)
Apr 16, 2026
Acting as the "brain" of the FBG sensing system, the device emits
Jun 18, 2026
The fiber Bragg grating sensor analyzer is suitable for signal demodulation and sensor data acquisition of fiber grating temperature, strain, pressure,
Apr 16, 2026
Simulation and experimental findings demonstrate that FMD can effectively eliminate the information of environmental noise and temperature, and greatly retain vibration information. In the
Jun 05, 2026
We demonstrate a passive fiber Bragg grating sensor demodulator based on the wavelength-dependent transmission of long period grating filters. Strain resolution of the system was
Oct 10, 2025
Fiber Bragg grating (FBG) sensors have been rapidly considered as excellent sensor elements since they were first demonstrated for strain and temperature measurement . In addition
Dec 12, 2025
Fiber Bragg grating demodulation through innovative numerical procedures Giuseppe Dinardo Department of Mechanics, Mathematics and
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