Improvement of Fiber Bragg Grating Wavelength
This paper presents a demodulation system for FBG sensors based on a long-period fiber grating (LPG) driven by artificial intelligence techniques.
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Wide Light Source Fiber
Design of a large-capacity fiber Bragg grating demodulation system
To achieve synchronous demodulation of a large-capacity Fiber Bragg Grating (FBG) sensor network, a FBG demodulation system based on modulated grating Y-branch (MG-Y) tunable laser is designed,
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A hybrid demodulation algorithm with high-sensitivity and wide-range
This paper presents a novel hybrid demodulation scheme for quasi-distributed fiber-optic acoustic sensor utilizing ultra-weak fiber Bragg grating (UWFBG) arrays as the discrete reflectors.
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Design of FBG Demodulation System Based on Arrayed
Accurate detection of the wavelength shift of fiber Bragg grating is the key to the practical application of the fiber Bragg grating demodulation system. In the sensing process, the sensing information of the
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Fibre Bragg Grating Wavelength Shift Demodulation with Filtering and
A novel approach to fibre Bragg grating spectra processing is proposed. The method is based on the use of nonlinear filtration and raising the spectrum value to the second power. A
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Drive Power Supply for High Voltage Tunable Light Source for Fiber
Fiber Bragg grating sensors have become widely used for measuring strain, temperature, and other physical parameters in structural health monitoring, industrial process control, and aerospace
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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
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Fibre Bragg Grating Wavelength Shift Demodulation with
A novel approach to fibre Bragg grating spectra processing is proposed. The method is based on the use of nonlinear filtration and raising the
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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
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A fiber Bragg grating demodulation system based on VCSEL laser and
This paper proposes a low-power, wide demodulation range solution for Fiber Bragg Gratings (FBG) based on voltage and current dual-wavelength tuning of VCSEL lasers.
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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
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Improvement of Fiber Bragg Grating Wavelength Demodulation
Abstract: A high-performance, low-cost demodulation system is essential for fiber-optic sensor-based measurement applications. This paper presents a demodulation system for FBG sensors based on a
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Large range wavelength demodulation for ultra-short fiber Bragg
The proposed method expands the types of FBG sensors that can be demodulated, overcoming the limitation of the conventional AWG-based method on the demodulation range. This
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Research on tunable laser power amplification for fiber grating sensing
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
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