Demodulation of Fibre Bragg Grating Sensors by Using Cumulative
Fibre Bragg gratings are one of the most popular sensors with a huge number of applications. Their most important advantage is signal modulation consisting in shifting the spectrum
A three-points tracking-based high-speed fiber Bragg grating
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
Demodulation Algorithm for Fiber Bragg Grating Sensors
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
Development of high speed fiber Bragg grating demodulator based on
This paper introduces the design principle of high-speed optical fiber grating demodulator based on scanning laser source, elaborated on high-speed fiber Bragg grating demodulation system principle.
Development of high speed fiber Bragg grating demodulator based on
The demodulation method of fiber grating is the key technology of fiber grating sensor. The paper proposes of the model of fiber grating demodulation system, which, based on Single Chip.
Design of Fiber Grating Demodulation System Based on Tunable
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
High-Speed Demodulation of weak FBGs Based on Microwave
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).
Optical Phase/Frequency Demodulation using Polarization
Our 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
Research on high resolution fiber Bragg grating sensing technology
The high resolution fiber Bragg sensing system based on high speed parallel sampling technology is proposed. According to the Rayleigh criterion, it is generally believed that the number
Research and Implementation of Super High-Speed Fiber Bragg Grating
A super high-speed fiber grating demodulator capable of simultaneously demodulating four grating channels is designed. The demodulator uses Fourier domain mode locked laser which consists of a
High-Speed and High-Precision Wavelength Demodulation of Fiber Bragg
Abstract Through the technologies of wavelength division multiplex and time division multiplex, fiber Bragg grating (FBG) sensor network was built. Based on System on Programmable
A Novel Frequency-Modulation (FM) Demodulator for Microwave
A novel scheme for demodulating frequency-modulated optical signals is proposed. It uses polarization-maintaining fiber Bragg grating (PM-FBG) as a frequency discriminator. The basic principle and
Parallel demodulation system and signal-processing
A parallel demodulation system for extrinsic Fabry-Perot interferometer (EFPI) and fiber Bragg grating (FBG) sensors is presented that is based on a Michelson interferometer and combines
Research on Peak-Detection Algorithms of Fiber Bragg Grating
Peak-detection algorithm is a crucial part of fiber grating signal demodulation. It plays a decisive role in the accuracy, speed and anti-noise performance of the entire system. This article
Partial scanning frequency division multiplexing for
Interrogation using partial spectrum scanning for a low-reflective fiber Bragg grating (FBG)-based sensor array is proposed. The sensor head is a Fabry–Perot interferometer (FPI)
Dynamic demodulation of spectral shifts in fiber-Bragg
Spectral demodulation of dynamic FBG signals is achieved without the need for intermittent wavelength tuning, scanning, or complicated feedback electronics,
A demodulation method of high-speed fiber Bragg grating based on
A novel high-speed fiber Bragg grating demodulation method is proposed and demonstrated in this paper. Large dispersion will be generated when light going through the long
An optimized strain demodulation method based on
An optimized strain demodulation method based on dynamic double matched fiber Bragg grating (FBG) filtering driven by a piezoelectric transducer (PZT) is proposed and experimentally
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