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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Fiber Bragg Gratings (FBGs) are critical components in modern fiber optic communication systems, where accurate simulation of their characteristics is essential for device design and performance
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In this paper, we investigate modification of transmission spectra of long-period fiber grating structures with an acoustic shock front propagating
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We propose a novel demodulation method of strong FBG sensor array based on wavelength-to-time mapping and multiloop OEO. The oscillating frequency shift caused by the time shift encodes
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This paper introduces the principle of fiber Bragg grating (FBG) sensor, designs and realizes a compact wavelength demodulation system for FBG sensing using a Fabry-Perot (F-P)
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This paper presents the modeling and simulation of an optical fiber Bragg grating for maximum reflectivity, minimum side lobe. Gating length represents as one of the critical parameters in
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The low-frequency vibration signal with high signal-to-noise ratio (SNR) is difficult to be obtained in the conventional methods owing to the influence of temperature and background noise in
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Dispersion severely degrades the performance of optical fiber. There are various methods for dispersion compensation. Due to some superior advantages Fiber Bragg Grating is a well known hot cake in the
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Here, we present a simple, compact, and robust technique featuring high linearity over a wide bandwidth and low background noise.
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To improve the noise performance and accuracy, the sensing head for light detection requires sensitized fiber gratings, which have a particular packaging structure and are unsuitable for
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A high-resolution sensing system is proposed and demonstrated. The sensor head is a Fabry-Perot interferometer formed by two cascaded uniform fiber Bragg grating sensors, and the
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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).
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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
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The analysis of a demodulation system for Fiber Bragg Grating sensors based on two fixed spectral filters has been carried out both theoretically and experimentally. Different system
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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
Get Quote Fiber Grating Solver Calculate the response of fiber gratings response with full-vector complex mode theory. Yu-Chun Lu Version 1.0.0.0 (45.7 KB)
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a novel demodulation method for FBG sensors with high sensitivity and applicability. The sensor apparatus includes a broad- band source in L-band, a circulator, a fiber Bragg grating element, and
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Fiber Bragg grating (FBG) sensors are one of the most exciting developments in the fields of fiber-optic sensors in recent years. One of the problems in using grating sensors is the
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A high-precision wavelength demodulation method based on optical fiber Fabry-Perot tunable (FPT) filter is proposed for the fiber Bragg grating temperature sensing system.
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Download Citation | Improved Multi-Grating Filtering Demodulation Method Based on Cascading Neural Networks for Fiber Bragg Grating Sensor | In recent decades, fiber Bragg grating
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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
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Combining the traditional optical reflectometry techniques with the large-scale fiber Bragg grating (FBG) array fabricated on-line by a fiber drawing tower, multiplexing and demodulation of
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Traditional peak detection methods for gratings often face challenges such as peak detection failures and spectral discontinuities. Effective demodulation from spectral signals to multi
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Our numerical program uses the transfer matrix method and the Nelder–Mead simplex algorithm. It can be easily implemented in the case of twin Bragg gratings. A twin grating is
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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
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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
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