scholarly journals Fiber Optic Vibration Sensor Based on the Tilted Fiber Bragg Grating

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Jiali An ◽  
Tao Liu ◽  
Yongxing Jin
Keyword(s):  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Average Power ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Vibration Sensor ◽  
Vibration Measurement ◽  
Bragg Grating ◽  
Average Output ◽  
Cladding Mode

A temperature-insensitive fiber optic vibration sensor based on the tilted fiber Bragg grating (TFBG) is presented. The sensing head is formed by insertion of a small section of MMF between a single-mode fiber and the TFBG. The reflection light from this tilted fiber Bragg grating includes two parts: the reflected Bragg mode and the cladding modes. The cladding modes were coupled back into the core mode as a function of the multimode fiber. The power of the cladding modes is sensitive to vibration, so the external vibration measurement can be obtained through the cladding mode average output power. Experiment results show that the root mean square (RMS) of the detection error of the average power was 0.01 μW within the temperature range from 20 to 70°C, so it is proved to be temperature independent; its frequency response has been tested to 1 KHz.

Emulated single-mode fiber-optic link by use of a linearly chirped fiber Bragg grating

1999 ◽  
Vol 5 (5) ◽  
pp. 1345-1352 ◽  
Author(s):  
D. Benito ◽  
M.J. Erro ◽  
M.A. Gomez ◽  
M.J. Garde ◽  
M.A. Muriel
Keyword(s):  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
Chirped Fiber Bragg Grating

Research of Coupling Single-Mode Fiber-Optic Vibration Sensor and Experimental Test

2013 ◽  
Vol 405-408 ◽  
pp. 3318-3322 ◽  
Author(s):  
Bin Ma
Keyword(s):  
Fiber Optic ◽  
Experimental System ◽  
Single Mode ◽  
Piezoelectric Sensor ◽  
Single Mode Fiber ◽  
Vibration Sensor ◽  
Fiber Optic Sensor ◽  
Vibration Measurement ◽  
Optic Sensor ◽  
Vibration Tests

A new kind of coupling single-mode fiber-optic sensor is presented and the working theory is discussed. Vibration tests of the sensor are carried out. The vibration experimental system based on cantilever are setup and explained in detail. Dynamic response of coupling single-mode fiber-optic sensor compared with piezoelectric sensor is investigated and the result is excellent. Experimental results show that the coupling single-mode fiber-optic sensor is suitable for vibration measurement practically.

Monitoring of single-mode fiber laser heating using Rayleigh scattering and first order fs-PbP fiber Bragg grating

2017 ◽  
Author(s):  
Rudy Desmarchelier ◽  
Romain Cotillard ◽  
Nicolas Roussel ◽  
Steven Armiroli ◽  
Guillaume Laffont
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Laser Heating ◽  
Rayleigh Scattering ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
First Order

Raman suppression in a high-power single-mode fiber oscillator using a chirped and tilted fiber Bragg grating

2021 ◽  
Vol 18 (3) ◽  
pp. 035103
Author(s):  
Xiaofan Zhao ◽  
Xin Tian ◽  
Qihao Hu ◽  
Binyu Rao ◽  
Meng Wang ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
High Power ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating

scholarly journals A Fiber Bragg Grating Based Torsional Vibration Sensor for Rotating Machinery

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2669 ◽  
Author(s):  
Jingjing Wang ◽  
Li Wei ◽  
Ruiya Li ◽  
Qin Liu ◽  
Lingling Yu
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Torsional Vibration ◽  
Electromagnetic Interference ◽  
Vibration Sensor ◽  
Vibration Measurement ◽  
Bragg Grating ◽  
Structural Parameter ◽  
Measurement Sensitivity ◽  
Fiber System

This paper proposes a new type of torsional vibration sensor based on fiber Bragg grating (FBG). The sensor has two mass ball optical fiber systems. The optical fiber is directly treated as an elastomer and a mass ball is fixed in the middle of the fiber in each mass ball fiber system, which is advantageously small, lightweight, and has anti-electromagnetic interference properties. The torsional vibration signal can be calculated by the four FBGs’ wavelength shifts, which are caused by mass balls. The difference in the two sets of mass ball optical fiber systems achieves anti-horizontal vibration and anti-temperature interference. The principle and model of the sensor, as well as numerical analysis and structural parameter design, are introduced. The experimental conclusions show that the minimum torsional natural frequency of the sensor is 27.35 Hz and the torsional vibration measurement sensitivity is 0.3603 pm/(rad/s2).

Lasing characteristics of 10 GHz signal spacing in a ring cavity multi-wavelength Brillouin fiber laser employing fiber Bragg grating

2016 ◽  
Vol 25 (04) ◽  
pp. 1650049 ◽  
Author(s):  
A. Zakiah Malek ◽  
N. A. M. Ahmad Hambali ◽  
M. H. A. Wahid ◽  
M. M. Shahimin
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Brillouin Scattering ◽  
Ring Cavity ◽  
Single Mode ◽  
Gain Medium ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
Output Coupling ◽  
Multi Wavelength

This paper experimentally demonstrated a ring cavity multi-wavelength Brillouin fiber laser employing fiber Bragg grating (FBG) that operated in the C-band region. The FBG plays a significant role to reflect signals and filter selected wavelengths. A number of generated Brillouin Stokes (BS) signals and tuning range ability were investigated. A 9[Formula: see text]km length of single mode fiber was utilized to provide a Brillouin gain medium for generating stimulated Brillouin scattering effect. In this work, at optimum output coupling ratio of 90% and Brillouin pump (BP) wavelength of 1550[Formula: see text]nm, up to a maximum of 26 BS signals were recorded by injecting 63.1[Formula: see text]mW of amplified BP powers. The BS signals were also tunable within the ranges of 1544–1556[Formula: see text]nm in accordance with the FBG properties at 3[Formula: see text]dBm bandwidth of 5[Formula: see text]nm.

Numerical Analysis of the Hybrid Photonic Crystal Fiber and Single Mode Fiber/Fiber Bragg Grating Sensor for Simultaneous Measurement of Temperature and Strain

2019 ◽  
Vol 16 (2) ◽  
pp. 329-334 ◽  
Author(s):  
Fabio Barros de Sousa ◽  
Fiterlinge Martins de Sousa ◽  
Jorge Everaldo de Oliveira ◽  
Lelis Araujo de Oliveira ◽  
Fabricio Pinho da Luz ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Fiber Bragg Grating ◽  
Photonic Crystal Fiber ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
Bragg Wavelength ◽  
Crystal Fiber ◽  
Power Peak ◽  
Bragg Grating Sensor

In this paper we investigate the performance of a Fiber Bragg Grating (FBG) as a strain-optic and temperature sensor, using the Coupled Mode Theory (CMT) and the Transfer Matrix Method (TMM), through numerical simulation in an interrogation system with Single-Mode Fiber (SMF) and Photonic Crystal Fiber (PCF). Parameters such as sensitivity, bandwidth, peak power, peak wavelength and side-lobes power, were analyzed through the Bragg wavelength change depending on the simultaneous variation of strain and temperature. The FBG sensor proposed suffered thermal variation 25 °C to 200 °C and of strain of 0 μs to 1000 μs, excellent linearity was obtained for the variation of the Bragg wavelength with differences of 0.7 nm for each 50 °C and 0.245 nm for each 200.

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