Fiber optic sensor arrays: a new method to improve multiplexing capability with a low complexity approach

Breglio, G.; Cusano, A.; Irace, Andrea; Cutolo, A.

doi:10.1016/j.snb.2003.12.038

Cited by 7 publications

(2 citation statements)

References 19 publications

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“…This section describes the working principle of the instrument series. The interrogation method is based on the use of a broadband source with passive optical filtering" [4,5]. The optical source is a broadband (40÷70 nm @ 3dB) SLD and the demodulation of the FBG's reflected signal is provided by an in-fiber edge filter based again on fiber optic technology.…”

Section: Fbg Sensing Systemmentioning

confidence: 99%

Railway monitoring and train tracking by fiber Bragg grating sensors

Mennella¹,

Laudati²,

Esposito³

et al. 2007

Third European Workshop on Optical Fibre Sensors

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The aim of this work is to demonstrate the efficiency of fiber Bragg grating sensors to be used for in situ railway monitoring and train tracking applications. In the specific case, FBGs (Fiber Bragg Gratings) sensors have been bonded to rails in order to perform two different kinds of measurements: dynamic strain to analyze the characteristic frequency response of the rail and train tracking (speed and rail deformation when loaded by running trains). The efficiency of the sensing system has been verified in terms of significance of the information retrieved by the sensing data resolution and the high speed response. The obtained results confirm the real possibility to adopt fiber optic sensors based on FBG technology as excellent devices to ensure multipoint monitoring of railway structures taking advantages of the typical peculiarities of FBG such as long distance interrogation, easy multiplexing, electromagnetic interferences immunit

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Section: Fbg Sensing Systemmentioning

confidence: 99%

Railway monitoring and train tracking by fiber Bragg grating sensors

Mennella¹,

Laudati²,

Esposito³

et al. 2007

Third European Workshop on Optical Fibre Sensors

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“…These sensors are usually based on temperature−dependent Fresnel reflec− tion [1] and utilize fibre Bragg gratings (FBGs) [2,3]. Many studies have been published demonstrating the promising properties of periodic structures [4].…”

Section: Introductionmentioning

confidence: 99%

Measurement of the maximum value of non-uniform strain using a temperature-insensitive fibre Bragg grating method

Kisała

2013

Opto-Electronics Review

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This paper presents an optoelectronic method for measuring the maximum value of non-uniformly distributed strain at varying temperature. Use of conjugate a gradient algorithm and a sensor model makes it possible to determine the maximum non-uniform strain value and the temperature at which the measurement is performed. The described sensor system enables the maximum strain value to be determined with a linear resolution of 0.003 m. A specially designed measurement system is proposed to verify the plausibility of using uniform fibre Bragg gratings for the simultaneous measurement of two quantities. The possibility of using the spectrum of two grating sensors to determine the maximum value of a non-uniform distribution of strain and temperature values is demonstrated.

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