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(Color online) Band structure and guided modes supported by a 25 period bilayer. The considered wavelength interval ranges from . Solid circles indicate the position of some of the guided modes sustained by the structure at .
(Color online) Calculated normalized reflectance as a function of the incident angle for three different values of the air gap between coupling prism and multilayer. (b) Measured normalized reflectance in the Otto setup for two different values of the force pressing the multilayer against the prism. Incident wavelength is .
(Color online) (a) Calculated and (b) measured spectroscopic-angular reflectance maps of multilayer. Wood anomaly associated with SEW has a at (see inset). Dark color means low reflectivity.
(Color online) Real-time measurement of the reflected light in the spectral range from the multilayer exposed at ethanol vapor during a limited time interval. (a) SEW at and (b) guided mode at . Field intensity distributions of the selected modes are shown beside.
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