Results 111 to 120 of about 6,027 (232)
The Fundamental of Fiber Bragg Grating (FBG) Sensor
International Journal for Research in Applied Science and Engineering TechnologyAn optical sensor known as an FBG is produced by laterally exposing a single mode fiber core to a strong UV laser light pattern on a regular basis. The exposure causes a sustained increase in the refractive index (ncore) of the fiber's core, resulting in fixed index modulation called grating (λ).
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Capacity of wavelength and time division multiplexing for quasi-distributed measurement using fiber bragg gratings [PDF]
, 2015 In this paper, an analysis of the use of wavelength and time division multiplexing techniques for quasi-distributed measurement in uniform fiber Bragg gratings is presented.
Davidson, Alan +6 more
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A Compressed Sampling and Dictionary Learning Framework for WDM-Based Distributed Fiber Sensing
, 2017 We propose a compressed sampling and dictionary learning framework for fiber-optic sensing using wavelength-tunable lasers. A redundant dictionary is generated from a model for the reflected sensor signal. Imperfect prior knowledge is considered in terms
Weiss, Christian, Zoubir, Abdelhak M.
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Development of a Multi-Level Displacement Sensor using Fiber Bragg Gratings (FBG)
Journal of MMIJ, 2010 When the structures such as rock slopes, underground caverns for the geological disposal of high level radioactive waste and underground power plants are constructed, the potential for displacement and damage in the surrounding rock mass is increased due to stress concentration and creep phenomenon. Therefore, the long-term monitoring of rock stability
Hiroyuki SANADA +4 more
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Using Embedded Fiber Bragg Grating (FBG) Sensors in Smart Aircraft Structure Materials
Procedia Engineering, 2012 AbstractThis paper describes the process of developing a smart material with monitoring application to the aircraft structures. A part of vertical stabilizer was selected and reproduced using carbon fiber honeycomb core sandwich panels. The sandwich panels reproduced were fabricated in accordance to the generic sandwich structure and aviation industry ...
Ramly, Ramzyzan +2 more
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Overlap Spectrum Fiber Bragg Grating Sensor Based on Light Power Demodulation
Sensors, 2018 Demodulation is a bottleneck for applications involving fiber Bragg gratings (FBGs). An overlap spectrum FBG sensor based on a light power demodulation method is presented in this paper.
Hao Zhang +5 more
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Fiber Bragg Grating (FBG) sensors as flatness and mechanical stretching sensors
, 2015 A novel approach which uses Fibre Bragg Grating (FBG) sensors has been utilised to assess and monitor the flatness of Gaseous Electron Multipliers (GEM) foils. The setup layout and preliminary results are presented.
Benussi, L., Et Al.
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IEEE Photonics Journal, 2018 We report a time- and wavelength multiplexing sensing network based on nearly identical ultraweak fiber Bragg gratings (FBGs). In the multiplexing scheme of the network, each wavelength channel is distinguished by time delays of the two probe laser lines,
Li Xia, Ying Wu, Udaya Rahubadde, Wei Li
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Development of fiber Bragg grating (FBG) permanent sensor technology for borehole applications
SPIE Proceedings, 2004 A new downhole measurement technique has been proposed based on optical fiber Bragg grating (FBG) sensors for long-term monitoring of strain and its corresponding stress build-up in geological fault zones. Design and development of the present downhole sensor installation equipment have been demonstrated.
Schmidt-Hattenberger, C. +4 more
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Spectral power stabilization against temperature variations in multimode fiber Bragg gratings
Applied Physics ExpressFiber Bragg gratings (FBGs) have been extensively used for single-point and multi-point measurements, mostly inscribed in single-mode fibers.
Kun Wang +8 more
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