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Proceedings Paper

Study of LPG-assisted fibre modal Michelson interferometers with coherence addressing and heterodyne interrogation
Author(s): P. Caldas; F. Araújo; L. A. Ferreira; G. Rego; M. B. Marques; J. L. Santos
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Paper Abstract

In this work, the LPG-assisted fibre Michelson modal interferometer is studied as a sensing structure for environmental refractive index, temperature and liquid level when coherence addressing and heterodyne interrogation are considered. The effects on measurand sensitivity of the order of the cladding mode excited by the LPG, of the degree of etching of the sensing fibre and of the fibre type used are investigated.

Paper Details

Date Published: 2 July 2007
PDF: 4 pages
Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66192F (2 July 2007); doi: 10.1117/12.738577
Show Author Affiliations
P. Caldas, INESC Porto (Portugal)
Univ. do Porto (Portugal)
Escola Superior de Tecnologia e Gestão de Viana do Costelo (Portugal)
F. Araújo, INESC Porto (Portugal)
L. A. Ferreira, INESC Porto (Portugal)
G. Rego, INESC Porto (Portugal)
Escola Superior de Tecnologia e Gestão de Viana do Castelo (Portugal)
M. B. Marques, INESC Porto (Portugal)
Univ. do Porto (Portugal)
J. L. Santos, INESC Porto (Portugal)
Univ. do Porto (Portugal)


Published in SPIE Proceedings Vol. 6619:
Third European Workshop on Optical Fibre Sensors

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