Principle and Demodulation Method of Fiber Bragg Grating
The fiber Bragg grating demodulator based on spectral imaging method has a small volume, high integration degree, and can be used to measure static and dynamic strains. It has outstanding
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Fiber Bragg Grating Demodulator
Demodulation method for vibration sensors of ultra-weak Fiber Bragg
Simulation and experimental findings demonstrate that FMD can effectively eliminate the information of environmental noise and temperature, and greatly retain vibration information. In the
A novel demodulation technique for identical weak fiber Bragg grating
A high speed quasi-distributed demodulation method based on the microwave photonics and the chromatic dispersion effect is designed and implemented for weak fiber Bragg gratings (FBGs).
Optical Phase/Frequency Demodulation using Polarization
Overall, despite a lot of past effort, there is still a need for a simple and robust FM/PM demodulation scheme that can achieve linear, wideband, and background-free operation. Here, we present a novel
Analysis of Demodulation Methods of Tilted Fibre Bragg
We propose averaging the shift of a group of cladding modes. We use the TFBG grating, of which not all cladding modes exceed the cut-off limit. Such
Fiber Bragg grating demodulation through innovative numerical
One of the most common and extensively employed optical devices is the Fiber Bragg Grating (FBG). Its reflection spectrum exhibits a peak at the so-called Bragg wavelength, where the fiber shows the
Demodulation of Fibre Bragg Grating Sensors by Using Cumulative
Research on demodulation algorithms can be divided into three main parts. The first group is searching for better methods of spectrum denoising. The second group is identifying the
CNN-Assisted Demodulation Approach for Fiber Bragg Grating
This article presents a new demodulation method from the reflection specklegrams of fiber Bragg grating (FBG)-based sensors by employing convolutional neural ne
High-Speed Demodulation of weak FBGs Based on Microwave
In this Letter, we propose a high speed quasi-distributed demodulation method based on the microwave photonics and the chromatic dispersion effect. The scheme uses broadband light source and
Demodulation Algorithm for Fiber Bragg Grating Sensors
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
Fiber Bragg Gratings
Fiber Bragg gratings are reflective structures in the core of an optical fiber with a periodic or aperiodic perturbation of the effective refractive index.