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A demodulation algorithm is vital for a fiber Bragg grating (FBG) sensing system. In this paper, a novel demodulation algorithm based on the variable-step-size method and cross-correlation algorithm is
A novel scheme for demodulating frequency-modulated optical signals is proposed. It uses polarization-maintaining fiber Bragg grating (PM-FBG) as a frequency discriminator. The basic principle and
The aim of this article is to introduce an innovative algorithm for the calculation of the shift of the maximum reflectivity wavelength of a Fiber Bragg
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
Our technique exploits the reflection characteristics of fiber Bragg gratings written in polarization-maintaining fibers to create a frequency
FBG (Fiber Bragg Grating Intelligent Demodulator) Product overview The XH-FBG fiber grating temperature sensing product is a sensing detection system
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
We propose a two-stage methodology to discern distinct wavelengths within highly overlapped FBG sensors. The method leverages a deep learning (DL) model in the initial stage to
Since the Bragg wavelength is a function of the fiber equivalent refractive index and the grating period, any physical parameter able to influence
Abstract Aiming at the problem that traditional peak-seeking algorithms cannot directly detect multiple reflections of Fiber Bragg Grating (FBG) sensing systems, this paper proposes a multi
It uses polarization-maintaining fiber Bragg grating (PM-FBG) as a frequency discriminator. The basic principle and preliminary results of linearity
Our technique exploits the reflection characteristics of fiber Bragg gratings written in polarization-maintaining fibers to create a frequency discriminator, which is able to convert PM/FM signals into
This paper presents a novel sensing system that enhances the measurability of the strain applied to a fiber Bragg grating (FBG) sensor by exploiting a tunable demodulator (TD). The system is simple and
Optical Phase/Frequency Demodulation using Polarization-Maintaining Fiber Bragg Gratings Dipen Barot, Member, Optica, Rui Zhou, Student Member, Optica, and Lingze Duan, Senior Member, IEEE,
In this article, a tracking-based high-speed demodulation method for FBG sensing systems based on the wavelength-tunable laser is proposed. The wavelength-tunable laser only
Fiber Bragg Grating (FBG) is defined as a passive filter device that consists of a diffraction grating created by periodic modulation of the refractive index in the fiber core, allowing it to reflect specific
A low-cost high-speed demodulation system based on a fiber grating spectral filter has been developed to support strain and temperature sensing in
We demonstrate the dynamic demodulation ability of the TFBG by measuring the transient wave propagation on a square aluminum solid with an out-of-plane point-wise fiber Bragg grating
Extrinsic (or hybrid) optical sensors use the fiber only as a signal transmission mean, while intrinsic optical sensors use the optical fiber itself also as the sensing element. One of the most common and
Fibre Bragg gratings are periodic structures with a significant number of sensor applications. Such gratings have all the positive properties of fibre
Fiber Bragg grating is used for monitoring various parameters. In this paper, a set of demodulation system is built based on the principle of edge filter. The system can realize static and
This paper presents a new method of demodulating the spectrum of fiber Bragg grating (FBG) based sensors by employing deep convolutional neural networks (DCNN).
Based on the influence of hysteresis and creep of piezoelectric ceramics, a tunable F-P filter is calibrated with a standard to locate the central wavelength reflected by fiber Bragg grating. In
A novel approach to fibre Bragg grating spectra processing is proposed. The method is based on the use of nonlinear filtration and raising the
They are formed by a periodic modulations of the index of refraction of the fiber core along the longitudinal direction and can be produced by various techniques. The term fiber Bragg grating was
A variety of spectral demodulators are available, 1 including spectrometers, scanning tunable filters, and unbalanced path-length interferometers. We have developed a
A three-points tracking-based high-speed fiber Bragg grating (FBG) demodulation method based on wavelength-tunable laser is proposed. The wavelength-tunable laser scans just three
A novel high-speed fiber Bragg grating demodulation method is proposed and demonstrated in this paper. Large dispersion will be generated when light going through the long