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Abstract
A general overview of the R&D activity in fiber optic sensing developed over the last fifteen years in Portugal is given. Different topics are addressed, including interferometric, intensity and Bragg grating based fiber optic sensors, signal processing and multiplexing techniques, optical current sensors, together with some references to field trials and applications. Possible guidelines for present and future national R&D activity on this subject are outlined.
Acknowledgments
The authors would like to acknowledge the financial support, in the form of R&D contracts and fellowships, of Portuguese Research Council (Fundação para a Ciěncia e Tecnologia) and of the European Commission. Through the years those projects were instrumental to the establishment of the R&D activity in fiber optic sensing in Portugal.