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    Pulse shape effects on the measurement of temperature using a Brillouin-based optical fiber sensor

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    Pulse shape.pdf (272.8Kb)
    Identificadores
    URI: http://hdl.handle.net/10902/2356
    DOI: 10.1117/12.719432
    ISSN: 1996-756X
    ISSN: 0277-786X
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    Author
    Galíndez Jamioy, Carlos Augusto; Madruga Saavedra, Francisco JavierAutoridad Unican; Cobo García, AdolfoAutoridad Unican; Conde Portilla, Olga MaríaAutoridad Unican; López Higuera, José MiguelAutoridad Unican
    Date
    2007-05-07
    Derechos
    © 2007 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print 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, 2007, vol. 6572, 65720S
    Enabling Photonics Technologies for Defense, Security, and Aerospace Applications III, Orlando (FL), 2007
    Publisher
    SPIE Society of Photo-Optical Instrumentation Engineers
    Enlace a la publicación
    http://dx.doi.org/10.1117/12.719432
    Palabras clave
    Brillouin gain scattering
    Distributed temperature measurements
    Optical time domain analysis
    Probe pulse shape
    Abstract:
    Distributed fiber sensing based on Brillouin gain scattering (BGS) principle is a useful way to develop devices capable to measure temperature or/and strain in optical fibers. New effects or technologies that could achieve a larger distance and/or a better spatial resolution are a topic of special interest in this fiber sensing area. The influence of the probe-pulse shape in the interaction between the pulsed light and the continuous wave laser in a pump-probe system is presented. The purpose of this study is to improve the spatial resolution of the measurement without losing stability in the BGS. Also it is showed how the backscattering Brillouin gain is affected by inducing variations on the final value of the BGS intensity; this effect is illustrated by using an experimental set up based on the Brillouin optical time-domain analysis (BOTDA). Theoretical analysis of the probe pulse in the Brillouin shift and intensity value using triangular, sinc and saw tooth shapes around the medium phonon life time (~10ns) are presented; as well as the experimental results and possible applications are explained.
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    UNIVERSIDAD DE CANTABRIA

    Repositorio realizado por la Biblioteca Universitaria utilizando DSpace software
    Contact Us | Send Feedback
    Metadatos sujetos a:licencia de Creative Commons Reconocimiento 3.0 España