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Proceedings Paper

Optical sensor by Talbot effect in selfoc lens
Author(s): Maria Victoria Perez; Carmen Bao; M. T. Flores-Arias; A. Castelo; Carlos C. Gomez-Reino; Carlos R. Fernandez-Pousa
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Paper Abstract

We present a hybrid optical device for measurement of refractive index variation in a selfoc lens by the Talbot effect. The intrinsic nature of the device that combines a linear grating and an inhomogeneous medium permits to measure changes in the refractive index along the axis as a function of the position shift of the first self-image. Possible changes in the temperature during lens fabrication can be extracted from refractive index variation. The hybrid device has a refractive index sensitivity of ±7 x 10-5 per nanometer of position shift of the first self-image.

Paper Details

Date Published: 9 June 2004
PDF: 4 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566692
Show Author Affiliations
Maria Victoria Perez, Univ. de Santiago (Spain)
Carmen Bao, Univ. de Santiago de Compostela (Spain)
M. T. Flores-Arias, Univ. de Santiago (Spain)
A. Castelo, Univ. de Santiago (Spain)
Carlos C. Gomez-Reino, Univ. de Santiago (Spain)
Carlos R. Fernandez-Pousa, Univ. Miguel Hernandez (Spain)

Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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