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With the wide application of new sensors, such as distributed fiber optic sensing networks, the strain response of the structure becomes easily accessible, so it is necessary to research and
Extrinsic (or hybrid) optical sensors use the fiber only as a signal transmission mean, while intrinsic optical sensors use the optical fiber itself also
This study presents a three-points tracking-based high-speed fiber Bragg grating demodulation method based on wavelength-tunable laser. In the proposed method, the wavelength
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
Research on demodulation algorithms can be divided into three main parts. The first group is searching for better methods of spectrum denoising. The
The proposed method offers the potential to enhance the capacity of FBG sensors within a network, paving the way for notable advancements in signal demodulation within intricate sensor
Abstract Fiber grating sensor signals can be affected by both strain and temperature, and decoupling strain and temperature for fiber optic sensing is a challenging task.
Fiber Bragg grating sensing is one of the most attractive researches in the field of optical fiber sensing. It has made considerable progress due to its advantages in high multiplexing, high
Download Citation | Direct demodulation for signal from fiber grating sensors by interferometer based on 3 × 3 coupler | To demodulate wavelength shift of fiber Bragg grating, a new
We propose a phase demodulation algorithm in interferometric fiber-optic sensing systems based on 3 × 3 coupler demodulation with high robustness and strong disturbance resistance, which...
Bragg grating fiber optic sensors have attracted a significant attention of scientific and engineering researchers due to their multiplexing capabilities and ability to perform absolute
Based on the influence of hysteresis and creep of piezoelectric ceramics, a tunable F-P filter is calibrated with a standard to locate the central wavelength reflected by fiber Bragg grating. In
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
For very high-speed events, such as ballistics testing, strain meas urement speed is not limited by the response of the fiber grating sensor, but
A low-cost high-speed demodulation system based on a fiber grating spectral filter has been developed to support strain and temperature sensing in
This work presents a model of an exact transfer function and its associated probability structure for intensity noise propagation through an operationally-passive fiber optic demodulation
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.
Using the case of a 3×3 passive digital demodulation algorithm, an exact transfer function and its associated probability structure for intensity noise propagation through a fiber Bragg grating
As a new fiber structure with multiple degrees of freedom in both the parameter design and coupling selectivity, chiral long-period fiber grating (C-LPFG) becomes a promising optical fiber sensor.
Demodulation technology based on ARM and FPGA for multi-channel distributed fiber grating sensing network was researched. The demodulation system include two modules: a modulation module and
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
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
FIBER Bragg grating (FBG) has been widely used in monitoring structural health , mechanical operation and other physical parameters for their advantages such as small size,
The development direction of fiber Bragg grating demodulation technology is multi-channel synchronous stable high frequency demodulation.
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
A three-points tracking-based high-speed fiber Bragg grating (FBG) demodulation method based on wavelength-tunable laser is proposed. The wavelength-tunable laser scans just three
In this paper, a dual-core fiber optic sensor has been proposed for dynamic monitoring of temperature and humidity. The side core is polished into a D
Our model leverages variations in the Full Width at Half Maximum (FWHM) of FBG sensor signals to accurately identify and demodulate the signals of three completely overlapping FBG
References (31) Abstract A phase demodulation system with a 3 × 3 coupler and active ellipse fitting algorithm for 3C interferometric fiber optic geophone array is proposed.