Common frequency suppression method for fiber specklegram perimeter sensors

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URI: http://hdl.handle.net/10902/10052
ISSN: 0277-786X
ISSN: 1996-756X
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Autoría
Rodríguez Cobo, LuisAutoridad Unican; Lomer Barboza, Mauro MatíasAutoridad Unican; López Higuera, José MiguelAutoridad Unican
Fecha
2015
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Copyright 2015 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Publicado en
Proceedings of SPIE, 2015, 9634, 96343R
24th International Conference on Optical Fibre Sensors, Curitiba, Brazil, 2015
Editorial
SPIE Society of Photo-Optical Instrumentation Engineers
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Palabras clave
Speckle patterns
Optical fiber sensor
Frequency suppression
Resumen/Abstract
In this work, a frequency based processing scheme has been employed to improve the sensitivity of Fiber Specklegram Sensors (FSSs) applied to perimeter fences. Based on 1.8 km of multimode fiber, two laser sources with different spectral properties have been employed to feed the optical fiber. These two laser sources provoke sensing systems with very different SNRs to which the common frequency suppression method has been applied. The final results suggest enough improvement on SNR to reduce the quality of the laser source on perimeter sensors, also decreasing the final cost.
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