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Frequency Resolution Quantification of Brillouin-Distributed Optical Fiber Sensors
Noise analysis using Monte Carlo method is conducted in this letter to correct the relationship between the frequency resolution, the Q-factor, signal-to-noise ratio, and frequency step in the… Expand
Study of austenite grain size of microalloyed steel by simulating initial solidification during continuous casting
Abstract The austenite grain growth behaviour of microalloyed steel during continuous casting was simulated by confocal laser scanning microscope, and the effect of the cooling rate during the… Expand
Dynamic Strain Measurement Using Small Gain Stimulated Brillouin Scattering in STFT-BOTDR
A distributed dynamic strain measurement is demonstrated using small gain stimulated Brillouin scattering (SBS) in Brillouin optical time domain reflectometry based on the short-time Fourier… Expand
Double peak-induced distance error in short-time-Fourier-transform-Brillouin optical time domain reflectometers event detection and the recovery method.
- Yifei Yu, L. Luo, B. Li, Linfeng Guo, Jize Yan, Kenichi Soga
- Physics, Medicine
- Applied optics
- 1 October 2015
The measured distance error caused by double peaks in the BOTDRs (Brillouin optical time domain reflectometers) system is a kind of Brillouin scattering spectrum (BSS) deformation, discussed and… Expand
Time and Frequency Localized Pulse Shape for Resolution Enhancement in STFT-BOTDR
- L. Luo, B. Li, Y. Yu, Xiaomin Xu, K. Soga, Jize Yan
- Computer Science, Engineering
- J. Sensors
- 1 September 2015
The data is obtained from a STFT-BOTDR setup in 23/010/2015 for localization analysis in BOTDR. It is directly sampled by a ADC with 5 GSPS with 500 us width of data in each file. Three types of… Expand
Distributed fiber optics sensors for civil engineering infrastructure sensing
Abstract Distributed Fiber Optic Sensing (DFOS) is one of the promising tools for structure health monitoring. It can measure physical quantities (such as temperature, strain, and vibration) of the… Expand
Quadratic Time-Frequency Transforms-Based Brillouin Optical Time-Domain Reflectometry
Linear and quadratic Time-Frequency (T-F) transforms are proposed for the signal processing of the Brillouin optical time-domain reflectometry, to improve the system performance, in terms of the… Expand
Frequency uncertainty improvement in a STFT-BOTDR using highly nonlinear optical fibers.
- L. Luo, F. Parmigiani, Y. Yu, Bo Li, K. Soga, Jize Yan
- Physics, Medicine
- Optics express
- 19 February 2018
The sensitivity of a sensor to strain or the temperature variations due to distributed Brillouin scattering are partially related to the type of fibers used and the Brillouin scattering induced… Expand
Dynamic Distributed Fiber Optic Strain Sensing on Movement Detection
A real-time dynamic Brillouin optical time domain reflectometry (BOTDR)-based system is introduced by using small gain stimulated Brillouin scattering with fast data managing and saving method. The… Expand
Research data supporting "BOTDR analyzer testing data at different temperature"
(1) General description of data: Seven files of data contains the time domain data captured by the 5GHz digitizer by changing the temperature from 50 to 80 degree for a 5m section of fibre.… Expand