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A full ellipsometric approach to optical sensing with Bloch surface waves on photonic crystals

: Sinibaldi, Alberto; Rizzo, Riccardo; Figliozzi, Giovanni; Descrovi, Emiliano; Danz, Norbert; Munzert, Peter; Anopchenko, Aleksei S.; Michelotti, Francesco

Postprint (PDF; )

Optics Express 21 (2013), No.20, pp.23331-23344
ISSN: 1094-4087
Journal Article, Electronic Publication
Fraunhofer IOF ()
figure of merits; one dimensional photonic crystal; optical sensing; phase-sensitive

We report on the investigation on the resolution of optical sensors exploiting Bloch surface waves sustained by one dimensional photonic crystals. A figure of merit is introduced to quantitatively assess the performance of such sensors and its dependency on the geometry and materials of the photonic crystal. We show that the figure of merit and the resolution can be improved by adopting a full ellipsometric phase-sensitive approach. The theoretical predictions are confirmed by experiments in which, for the first time, such type of sensors are operated in the full ellipsometric scheme.