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Measurement of displacement in the micrometer range using speckle pattern correlation in multimode fibers

Abstract: The displacement measurement in the micrometer range using the speckle pattern correlation in optical fibers is described. The high sensitivity of a multimode fiber when propagating a coherent light causes any variation in the distribution of the speckle pattern is proportional to the disturbance which it originates. The speckle pattern is caused by interference between modes and the shift mechanism is due to coupling between modes and micro-induced redistribution curvature applied to the fiber externally. The movement is produced by a transducer containing microbends pressure induced on the fiber. Experimental results are presented using three types of multimode plastic optical fiber. In the signal generated from the change in the speckle pattern observed with relatively good reproducibility, so that sensor systems could be used.

Otras comunicaciones del congreso o articulos relacionados con autores/as de la Universidad de Cantabria

 Autoría: Lomer M., Abascal J., Castrellon-Uribe J., Lopez-Higuera J.,

 Congreso: European Workshop on Optical Fibre Sensors (5º : 2013 : Cracovia)

Editorial: SPIE Society of Photo-Optical Instrumentation Engineers

 Fecha de publicación: 20/05/2013

Nº de páginas: 4

Tipo de publicación: Comunicación a Congreso

 DOI: 10.1117/12.2026804

ISSN: 0277-786X,1996-756X

 Proyecto español: TEC2010-20224-CO2-02

Url de la publicación: https://doi.org/10.1117/12.2026804

Autoría

MAURO MATIAS LOMER BARBOZA

JESUS RAMON ABASCAL SANTAMARIA

JESUS CASTRELLON URIBE