Abstract: In recent years, phase demodulation methods for optical fiber vibration sensors (OFVS) have attracted more and more attention, aiming to accurately detect vibration signals. The
Read MoreThe vibration measurement of spacecraft structures in space applications has raised higher requirements for the demodulation frequency of the fiber Bragg grating (FBG) demodulator. In
Read MoreIn order to improve the demodulation speed of the fiber Bragg grating demodulation system, this article puts forward the principle of ultra-high-speed parallel acquisition and demodulation of fiber Bragg
Read MoreTo 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,
Read MoreThe overlapping spectrum power detection method realizes demodulation by monitoring the photodetector output of the overlapping spectrum of two fiber gratings . It has been
Read MoreA novel approach to fibre Bragg grating spectra processing is proposed. The method is based on the use of nonlinear filtration and raising the
Read MoreThe XPM technique is applied to the demodulation system for fiber grating sensor for the first time in this thesis. According to XPM principle, the intensity of accessorial light can be altered by
Read MoreHere, we present a simple, compact, and robust technique featuring high linearity over a wide bandwidth and low background noise.
Read More1. Introduction Ultra-weak Fiber Bragg grating (UWFBG) distributed vibration sensors have gained widespread adoption in perimeter security and structural health monitoring, thanks to their
Read MoreIn this context, we propose a novel CNN model specifically designed to address the demodulation challenges posed by asymmetric overlapping spectra in FBG sensor networks.
Read MoreThe 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
Read MoreAbstract: In this article, we propose a phase-modulation interferometer based on Multicore fiber for demodulation of a fiber Bragg grating (FBG) accelerometer using a multicore fiber (MCF) interferometer.
Read MoreFiber Bragg grating (FBG) sensors are one of the most exciting developments in the fields of fiber-optic sensors in recent years.
Read MoreIn the case of twin Bragg gratings, the parameters to be adjusted to reconstruct the reflection spectrum are the length, the period, the index modulation of each grating and also the
Read MoreA 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
Read MoreA low-cost high-speed demodulation system based on a fiber grating spectral filter has been developed to support strain and temperature sensing in
Read MoreHere, by applying the coupled-mode theory, influences of FBG design parameters such as grating length, refractive index modulation depth, and apodization type on the dual-grating
Read MoreIn this article, we propose a phase-modulation interferometer based on Multicore fiber for demodulation of a fiber Bragg grating (FBG) accelerometer using a multicore fiber (MCF)
Read MoreOne 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
Read MoreTo 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
Read MoreHere, we present a simple, compact, and robust technique featuring high linearity over a wide bandwidth and low background noise.
Read MoreSince the Bragg wavelength is a function of the fiber equivalent refractive index and the grating period, any physical parameter able to influence such quantities can be ascertained. Variations of strain
Read MoreFibre Bragg gratings are one of the most popular sensors with a huge number of applications. Their most important advantage is signal modulation
Read MoreIn this study, we propose a demodulator for fiber Bragg grating (FBG) ultrasonic sensor array using arrayed waveguide grating (AWG). Wavelength modulation in the FBG center
Read MoreFiber 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
Read MoreHowever, grating-based spectrometers have more advantages in demodulation of unknown spectral signals. Thanks to its high resolution, good stability, and low cost, we believe the
Read MoreOur 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
Read MoreThe development direction of fiber Bragg grating demodulation technology is multi-channel synchronous stable high frequency demodulation.
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