Influence of the volume speckle on fiber specklegram sensors based on four-wave mixing in photorefractive materials

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

doi:10.1016/j.optcom.2010.10.037

Cited by 10 publications

(5 citation statements)

References 31 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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“…(1) In near field approximation, the fiber speckle pattern has an average grain diameter given by [5] (3) Equation (3) indicates the possibility to modify the geometrical characteristics of the speckle pattern by making changes in the numerical aperture of the multimode fiber or by changing the wavelength of the laser radiation. In the next section, we will evaluate experimentally the effects of the wavelength, which is equivalent to evaluating the average grain speckle diameter, on the performance of a non-holographic fiber specklegram sensor.…”

Section: Theoretical Analysismentioning

confidence: 99%

Effect of wavelength on metrological characteristics of non-holographic fiber specklegram sensor

et al. 2015

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Abstract:In this paper, we report some results about the effects of varying the wavelength in a structure of a non-holographic fiber specklegram sensor. In these arrangements, the speckle pattern produced by a multi-mode optical fiber is coupled to the asingle-mode optical fiber with lower numerical aperture, which produces a filtering effect that can be used as an optical transduction mechanism. The influence of the wavelength on the sensor performance is evaluated by changing the laser wavelength, and a strong effect on the linearity and reproducibility of its response is found. Lasers emitting at 1310 nm, 1550 nm, and 1625 nm are used.

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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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Influence of the volume speckle on fiber specklegram sensors based on four-wave mixing in photorefractive materials

Cited by 10 publications

References 31 publications

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

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

Effect of wavelength on metrological characteristics of non-holographic fiber specklegram sensor

Temperature measurement by means of fiber specklegram sensors (FSS)

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