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This paper presents a novel sensing system that enhances the measurability of the strain applied to a fiber Bragg grating (FBG) sensor by exploiting a tunable demodulator (TD). The system is simple and
Fiber Bragg grating (FBG) sensors have been rapidly considered as excellent sensor elements since they were first demonstrated for strain and temperature measurement . In addition
A simple all optical fibre wavelength shift detection scheme, for use with fibre Bragg grating sensing systems, is described. The system is based on the use of a wavelength division coupler
In this article, a tracking-based high-speed demodulation method for FBG sensing systems based on the wavelength-tunable laser is proposed. The wavelength-tunable laser only
A temperature sensor based on fiber Bragg grating (FBG) combined with a microwave photonic-assisted fiber loop ring down (FLRD) is proposed and
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Real-time data of the service status indicators were obtained by fiber grating and video perception technologies. The data features of the monitoring results were analyzed.
With a compact and robust design, strong anti-interference performance, and high reliability, it is ideal for long-term use in complex industrial and engineering applications.
In this study, we propose a multicore fiber platform for distributed temperature sensors enhanced by machine learning algorithms. Our experimental setup involves densely inscribed FBGs
We designed and fabricated a multi-channel SiO 2-based AWG as a key component of FBG Interrogation. To increase the dynamic range of demodulation, a multimode interference coupler
To demonstrate the operating principle of the miniature fiber Bragg grating sensor interrogator FBG-TransceiverTM technology, an engineering prototype unit was developed based on ROI''s proprietary
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
From this perspective, fiber Bragg gratings (FBGs) are attractive sensing elements that can be effectively incorporated into MCFs using femtosecond inscription techniques . Optical
In this work, we proposed an innovative filterless, multi-point, and temperature-independent FBG dynamical demodulator using the pulse-width-modulation (PWM) technique.
Extrinsic (or hybrid) optical sensors use the fiber only as a signal transmission mean, while intrinsic optical sensors use the optical fiber itself also
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
We demonstrated in this work a filterless, multi-point and temperature-independent FBG (fiber Bragg grating) dynamical demodulator using pulse-width-modulation (PWM).
It examines quasi-distributed sensing approaches, including fiber Bragg gratings (FBGs), and addresses mitigation techniques for temperature-strain cross-sensitivity. A comparative analysis
By combining with other equipment, the scanning fiber laser, the etalon and the FPGA realize the multichannel, high-precision, high-stability, high-repeatability, and serial-parallel structure detection
The scanning fiber laser, the etalon and the FPGA are combined with other devices to realize the detection of signals of the grating sensor network with multi-channel, high precision, high...
FBG non-metallic temperature sensors Combine multiple point sensors on singe fiber channelBased on fiber Bragg gratings (FBGs)Versatile and rugged temperature
The array waveguide grating (AWG) demodulation method has been widely used in recent years. However, the resolution and total measurement range of AWG-based Fiber Bragg Grating
This paper presents a demodulation system for FBG sensors based on a long-period fiber grating (LPG) driven by artificial intelligence techniques.
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
FBG (Fiber Bragg Grating Intelligent Demodulator) Product overview The XH-FBG fiber grating temperature sensing product is a sensing detection system
A high-speed demodulation technique based on microwave photonics and chromatic dispersion is proposed for distributed weak fiber Bragg gratings (FBGs). A
The results reveal leading trends in the use of techniques like the use of fiber Bragg gratings (FBG) and distributed sensing in high-accuracy conditions
Abstract Fiber-optic 3D shape sensing technology, renowned for its immunity to electromagnetic interference and unparalleled spatial accuracy, is indispensable for real-time
Fiber-optic sensors have gained much research attention and have been used in various industrial environments , . They have many advantages, such as a simple and compact