Study of LPG-assisted fibre modal Michelson interferometers with coherence addressing and heterodyne interrogation

P. Caldas; F. Araújo; L. A. Ferreira; G. Rego; M. B. Marques; J. L. Santos

doi:10.1117/12.738577

2 July 2007 Study of LPG-assisted fibre modal Michelson interferometers with coherence addressing and heterodyne interrogation

P. Caldas, F. Araújo, L. A. Ferreira, G. Rego, M. B. Marques, J. L. Santos

Author Affiliations +

Proceedings Volume 6619, Third European Workshop on Optical Fibre Sensors; 66192F (2007) https://doi.org/10.1117/12.738577
Event: Third European Workshop on Optical Fibre Sensors, 2007, Napoli, Italy

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.

Citation Download Citation

P. Caldas, F. Araújo, L. A. Ferreira, G. Rego, M. B. Marques, and J. L. Santos "Study of LPG-assisted fibre modal Michelson interferometers with coherence addressing and heterodyne interrogation", Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66192F (2 July 2007); https://doi.org/10.1117/12.738577

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