Improvement of the dynamic range of a fiber specklegram sensor based on volume speckle recording in photorefractive materials

Gómez, Jorge; Lorduy, G Héctor; Salazar, Ángel

doi:10.1016/j.optlaseng.2010.11.017

Cited by 14 publications

(5 citation statements)

References 26 publications

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“…FSS have been widely studied by using holographic setups based on photorefractive materials [8][9][10][11][12][13], however, more recently, non-holographic fiber specklegram sensors for measuring several engineering parameters have been reported [14][15][16][17][18][19][20]. About non holographic techniques two possibilities have been reported.…”

Section: Introductionmentioning

confidence: 99%

Fiber specklegram sensors (FSS) for measuring high frequency mechanical perturbations

Hoyos¹,

Gómez²,

Gómez³

2013

SPIE Proceedings

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In this work, a technique for measuring high frequency micro-vibrations by using non holographic fiber specklegram sensor is experimentally demonstrated. In our setup, a laser source emitting at 632nm is coupled to a structure of Singlemode-Multimode-Singlemode fibers which produce a filtering effect that is used as optical transducer. Mechanical perturbations of controlled amplitude and frequency are applied to the Multimode fiber, which is fastened at the ends to induce vibrations. Perturbations higher than 3 KHz and below one micron are perfectly recovered by the system, which additionally, exhibits a linear response. Due to the low cost and the simplicity of the technique, it becomes an interesting method for the implementation of fiber sensors in a wide range of engineering applications.

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Section: Introductionmentioning

confidence: 99%

Fiber specklegram sensors (FSS) for measuring high frequency mechanical perturbations

Hoyos¹,

Gómez²,

Gómez³

2013

SPIE Proceedings

Self Cite

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“…Unfortunately, most of these methods rely on expensive sensor interrogation schemes, resulting in their applicability perhaps being limited by different factors such as cost or repeatability [ 14 ]. In this context, fiber specklegram sensors (FSS), which have high sensitivity and require only relatively simple measurement devices, stand out as promising alternatives to the widely used fiber optic sensing technology, and they have been applied in various sensing applications [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a Learning-Empowered Fiber Specklegram Sensor Based on Focused Ion Beam Milling for Refractive Index Sensing

Gao

2023

Nanomaterials

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We report a simple and robust fiber specklegram refractive index sensor with a multimode fiber-single mode fiber-multimode fiber structure based on focused ion beam milling. In this work, a series of fluid channels are etched on the single-mode fiber by using focused ion beam milling to enhance the interaction between light and matter, and a deep learning model is employed to demodulate the sensing signal according to the speckle patterns collected from the output end of the multimode fiber. The feasibility and effectiveness of the proposed scheme were verified by rigorous experiments, and the test results showed that the demodulation accuracy and speed could reach 99.68% and 4.5 ms per frame, respectively, for the refractive index range of 1.3326 to 1.3679. The proposed sensing scheme has the advantages of low cost, easy implementation, and a simple measurement system, and it is expected to find applications in various chemical and biological sensing.

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“…Los sensores FSS han sido ampliamente estudiados mediante arreglos holográficos cuyo medio de registro es un material foto refractivo [11][12][13][14][15][16], sin embargo, más recientemente, la importancia de este tipo de sistemas en esquemas no-holográficos ha sido explorada en la medición de múltiples parámetros de interés en ingeniería [17][18][19][20][21][22][23][24][25][26]. Alrededor de los arreglos no-holográficos, dos posibilidades han sido reportadas.…”

Section: Introductionunclassified

Temperature measurement by means of fiber specklegram sensors (FSS)

Castaño¹,

Gutiérrez²,

Quíjano³

et al. 2018

Opt. Pura Apl.

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In this work, a technique for temperature measurement using non-holographic fiber optic specklegrams is demonstrated experimentally. In the experimental scheme, a 632 nm laser source is coupled to a mono-multi-mono mode fiber arrangement, which produces a filtering effect that is used as an optical transduction mechanism. Thermal perturbations between 25 0 C and 60 0 C were applied to the fiber array, finding a linear response of the system and a sensitivity superior to the previously reported for studies in similar systems. Due to the low cost and simplicity of the technique, these results are of great interest for the implementation of this type of optical fiber sensors in a large number of engineering applications.

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Improvement of the dynamic range of a fiber specklegram sensor based on volume speckle recording in photorefractive materials

Cited by 14 publications

References 26 publications

Fiber specklegram sensors (FSS) for measuring high frequency mechanical perturbations

Fiber specklegram sensors (FSS) for measuring high frequency mechanical perturbations

Demonstration of a Learning-Empowered Fiber Specklegram Sensor Based on Focused Ion Beam Milling for Refractive Index Sensing

Temperature measurement by means of fiber specklegram sensors (FSS)

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