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 i...
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Specific Models of Fiber Bragg Grating Demodulators - Indzawo Optic Connect [PDF]
Also, for measurements of FBG sensor spectra, various algorithms have been developed to estimate the Bragg wavelength and its shift. This article presents methods that reduce the noise in
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The conventional fiber Bragg grating (FBG) accelerometer demodulation often suffers from high-environmental sensitivity, complexity, and cost. To address these issues, this article presents two
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Fiber Bragg gratings are reflective structures in the core of an optical fiber with a periodic or aperiodic perturbation of the effective refractive index.
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Fiber X300/X500 series is a Fiber Bragg Grating demodulator by scanning spectrum. It uses a scanning narrow-band semiconductor laser as light source to perform high-resolution fiber grating
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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
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For experimental verification, ultra-weak fiber Bragg gratings (uwFBGs) with reflectivity of −50 dB are applied to construct a hydrophone array with 800 sensors, and a vibratory liquid column method is
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Various techniques have been demonstrated for optical PM/FM demodulation. They can be generally categorized as either coherent-demodulation techniques (CDT) or incoherent-demodulation
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Simulation and experimental findings demonstrate that FMD can effectively eliminate the information of environmental noise and temperature, and greatly retain vibration information. In the
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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
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Also, for measurements of FBG sensor spectra, various algorithms have been developed to estimate the Bragg wavelength and its shift. This article
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To address this need, a low-power tunable laser-based fiber grating demodulator has been developed in this paper, employing a variable step-length laser scanning strategy based on
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