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Design of an FBG Based Water Leakage Monitoring System, Case of Study: An FBG Pressure Sensor
IEEE Instrumentation & Measurement Magazine, 2021Water leakages in water distribution systems due aging of pipes is a problem affecting most countries around the world. Official reports from government-commissioned surveys indicate that water losses are estimated to amount to an average of around 30% in most countries, with peaks up to 60% [1]–[3]. Such amounts increase in urban areas, reaching 70 to
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Sensor monitoring system with embedded FBGs
2014 16th International Conference on Transparent Optical Networks (ICTON), 2014In this paper, we propose a simple monitoring system with the use of specially fabricated Fibre Bragg Gratings (FBGs) and Optical Power Meter (OPM). The main idea bases on stable and easy to build system for environmental parameters measurements using in-line fused FBGs. Here are presented the results of temperature measurement monitoring system.
Mateusz Madry +3 more
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FBG based transducers for morphing applications
2015 9th International Conference on Sensing Technology (ICST), 2015The measurement of large deformations represents a challenging issue for many engineering applications. To name a few, morphing and deployable aerospace structures, due to the intrinsic large deformations, require dedicated sensing systems able to capture the current geometry (shape reconstruction) and to detect the stress level (structural health ...
Salvatore Ameduri +5 more
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Optics Letters
A high-precision signal demodulation scheme for fiber Bragg grating (FBG) is presented. The scheme utilizes a piezoelectric transducer (PZT) tuned co-located, multi-wavelength tunable FBGs (CMWT-FBGs) in one arm of the Michelson interferometer (MI), which adjusts its central-wavelength range to fully cover the ...
Tingfeng Li +4 more
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A high-precision signal demodulation scheme for fiber Bragg grating (FBG) is presented. The scheme utilizes a piezoelectric transducer (PZT) tuned co-located, multi-wavelength tunable FBGs (CMWT-FBGs) in one arm of the Michelson interferometer (MI), which adjusts its central-wavelength range to fully cover the ...
Tingfeng Li +4 more
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FBG filter with minimal dispersion
Laser Physics, 2008An optimal filter for super-fast fiber-optic communication lines should cause minimal phase distortions. The simplest case of Bragg grating with a symmetric profile is considered. A distortion functional is presented, which is the mean square group delay over the Bragg reflection band at a fixed integral reflectivity.
O. V. Belai, D. A. Shapiro
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Effect of Strain and Temperature on FBG
2020 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT), 2020In this paper, the effect of longitudinal strain and temperature on uniform Fiber Bragg Grating (FBG) is investigated using MATLAB. Measurement of strain or temperature in various applications is essential where mankind is restricted. Fiber optic technology gives a better result for the measurement of strain or temperature using FBG based sensors.
V Naga Bhaskar Chaluvadi +1 more
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FBG hydrophone: Theory and experiment
2008 1st Asia-Pacific Optical Fiber Sensors Conference, 2008A fiber Bragg grating (FBG) hydrophone with enhanced sensitivity is demonstrated. A novel piston-like diaphragm with a hard core fixed at the center is used as the sensing element. Theoretical analysis shows that the Young's modulus of the diaphragm and the radius of the hard core have significant effect on the pressure sensitivity.
Wentao Zhang +3 more
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Fabrication of FBGs With an Arbitrary Spectrum
IEEE Sensors Journal, 2008A fiber Bragg grating (FBG) with an arbitrary spectrum can be obtained as the addition of the contribution of some concatenated subFBGs written without phase jumps using the same phase mask. An adaptive filter is used to obtain the parameters of the different subFBGs required to reproduce the desired response.
Quintela, Antonio +4 more
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Tunable FBGs for wavelength scanning
2015 Photonics North, 2015We demonstrate a low-cost tunable fiber Bragg grating (FBG) filter using electromagnetic tuning. Continuous wavelength scanning feature of this filter is evaluated by incorporating the same into a fiber laser system.
Pin Long, Mohammad Abtahi, Saju Thomas
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Accessing the Time Response of FBG
2007 Conference on Lasers and Electro-Optics - Pacific Rim, 2007We report on experimental results related to the time response of fiber Bragg gratings. From the experimental data it is possible to retrieve important parameters such as the response delay and the grating switching time, which are properties of relevance for understanding the operation of fast tuning devices.
Alexandre de Almeida Prado Pohl +1 more
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