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Sensors (Basel). 2012;12(3):2654-66. doi: 10.3390/s120302654. Epub 2012 Feb 28.

LOLS research in technology for the development and application of new fiber-based sensors.

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  • 1Department of Physics, Faculty of Sciences, University of Lisbon, Lisboa, Portugal. joao.coelho@fc.ul.pt

Abstract

This paper presents the research made at the Laboratory of Optics, Lasers and Systems (LOLS) of the Faculty of Sciences of University of Lisbon, Portugal, in the field of fiber-based sensors. Three areas are considered: sensor encapsulation for natural aqueous environments, refractive index modulation and laser micropatterning. We present the main conclusions on the issues and parameters to take in consideration for the encapsulation process and results of its design and application. Mid-infrared laser radiation was applied to produce long period fiber gratings and nanosecond pulses of near-infrared Q-switch laser were used for micropatterning.

KEYWORDS:

encapsulation; fiber-based sensors; laser micropatterning; laser processing; refractive-index modulation

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