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Proceedings Paper

Sensing characteristics of hollow-core photonic crystal fibre modal interferometers
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Paper Abstract

In this work, sensitivity to strain, temperature and curvature of a sensor relying on modal interferometry in hollow-core photonic crystal fibre is studied. The sensing structure is simply a piece of hollow-core fibre connected in both ends to standard single mode fibre. An interference pattern that is associated to the interference of the light that propagates in the hollow core fundamental mode with light that propagates in other modes is observed. The phase of this interference pattern changes with the measurand interaction, which is the basis for considering this structure for sensing. The phase recovery is performed using a white light interferometric technique.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750339 (5 October 2009); doi: 10.1117/12.834485
Show Author Affiliations
S. H. Aref, INESC Porto (Portugal)
Shahid Beheshti Univ. (Iran, Islamic Republic of)
R. Amezcua-Correa, Univ. of Bath (United Kingdom)
J. P. Carvalho, INESC Porto (Portugal)
Univ. do Porto (Portugal)
O. Frazão, INESC Porto (Portugal)
Univ. do Porto (Portugal)
P. Caldas, INESC Porto (Portugal)
Univ. do Porto (Portugal)
Escola Superior de Tecnologia e Gestão de Viana do Castelo (Portugal)
J. L. Santos, INESC Porto (Portugal)
Univ. do Porto (Portugal)
F. M. Araújo, INESC Porto (Portugal)
H. Latifi, Shahid Beheshti Univ. (Iran, Islamic Republic of)
F. Farahi, Univ. of North Carolina at Charlotte (United States)
L. A. Ferreira, INESC Porto (Portugal)
J. C. Knight, Univ. of Bath (United Kingdom)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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