This study addresses the wavelength demodulation problem of the overlapping reflection spectrum of serial fiber Bragg gratings (FBGs) with nearly
Basic fundamentals of FBG and recent progress of fiber Bragg grating-based sensors used in various applications for temperature, pressure,
As shown in Fig. 1 (a), the advanced optical fiber sensing technologies, such as fiber Bragg grating (FBG), tilted fiber Bragg grating sensors (TFBG), evanescent wave, and surface
Nowadays, smart composite materials embed miniaturized sensors for structural health monitoring (SHM) in order to mitigate the risk of failure due to an overload or to unwanted
Fiber Bragg Gratings or FBGs have achieved significant attention towards sensing and communication applications due to their outstanding advantages. Due to its high sensitivity towards
In this paper, we propose a multiplexing method for fiber Bragg gratings (FBGs) and Fabry-Pérot interferometers (FPIs) based on optical frequency-domain reflectometry (OFDR) technology and the
Strain monitoring is of great significance to identify the failure of key mechanical components and ensure the good operation of mechanical equipment. In terms of the common issue
Fibre Bragg gratings are periodic structures with a significant number of sensor applications. Such gratings have all the positive properties of fibre
In 2019, K Li, et al. reported an optical sensor based on laser wavelength demodulation and the respiration and pulse signals were collected by wavelet transform . In 2020, Aizhan
In this paper, a novel demodulation method for vibration sensors based on ultra-weak fiber Bragg grating (FBG) using a self-referencing signal and DBN is proposed.
Abstract Aiming at the problem that traditional peak-seeking algorithms cannot directly detect multiple reflections of Fiber Bragg Grating (FBG) sensing systems, this paper proposes a multi
This method realizes parallel writing technology for multi-core fibers, achieving a fiber Bragg grating (FBG) signal-to-noise ratio (SNR) of 20dB. The temperature and strain characteristics
This paper presents an innovative and efficient shape-sensing approach for optical fiber Bragg grating (FBG) arrays, employing the dual-comb spectroscopy (DCS) technique for demodulation.
A system of fiber Bragg grating (FBG) temperature sensing demodulation based on light power detection is proposed in this paper. Compared with the traditional demodulation method based
This article presents a new demodulation method from the reflection specklegrams of fiber Bragg grating (FBG)-based sensors by employing convolutional neural ne
Since its inception, Fiber Bragg grating (FBG) has been an ideal candidate for OFS technology; currently, most OFS systems use FBG. Due to its inherent characteristics and potential
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).
In this paper, an artificial hillock and landslide is simulated and monitored by custom FBG-based sensors. Two types of FBG-based sensors are
In this paper, a photoelectric conditioning circuit for fiber Bragg grating demodulation is designed. The experimental results show that this method can accurately demodulate fiber Bragg
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
Index Terms—Fiber Bragg grating (FBG), FBG array, fiber-optic sensor, high reliability, high strength, temperature sensing.
Fiber Bragg Grating Sensor The Fiber Bragg Grating (FBG) sensor consists of distributed Bragg reflectors in a short segment of optical fiber that reflects particular wavelength light and transmits all
Summary A novel demodulation strategy, which uses multiple modes within the spectral comb of tilted fiber Bragg gratings (TFBGs) allowing simultaneous interrogation of 22 resonances from a single
In-fiber Bragg grating filters continue to proliferate, and their applications expand with the rapid advancement of fiber optic component fabrication techniques. Mathematical models for the
Abstract To simultaneously achieve the feature of high sensitivity, high precision and large-area in tactile sensing, a hollowed-out quadrangular prism structure flexible pressure sensor
Specifically, the dual-parameter sensor, consisting of an all fiber-inline Mach Zehnder interferometer (MZI) cascaded fiber Bragg grating (FBG), features high strain sensitivity of −2.56
This paper provides a brief overview of some of the techniques that have been used to support high speed measurements using fiber grating sensors over frequency ranges from 10s of kHz, to MHZ
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