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Multilayer metal/metal-oxide diffractive structure for photonic temperature sensing

Loukas Athanasekos, Miltiadis Vasileiadis, Anna Tsigara, Eliana Kaminska, Anna Piotrowska, Dimitris Alexandropoulos, Michail M. Sigalas, and Nikos A. Vainos

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Abstract

We designed and fabricated multilayer metal/metal-oxide surface relief diffractive grating structures by growing alternating Pt and SnOx layers. Optical interrogation at 633 nm reveals the temperature dependence of their reflection and transmission diffractive effects. This function is explored here in the context of a remote, spatially localized, photonic temperature sensing operation, achieving sensitivity of 10% per °C for the zeroth-order in the transmission mode. The experimental demonstration is found to be in good agreement with the results of rigorous coupled wave analysis of the composite metal/metal-oxide element.

© 2010 Optical Society of America

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