title: Towards athermal organic-inorganic guided mode resonance filters.
abstract: We demonstrate guided-mode resonance filters featuring an amorphous TiO(2) layer fabricated by atomic layer deposition on a polymeric substrate. The thermal properties of such filters are studied in detail by taking into account both thermal expansion of the structure and thermo-optic coefficients of the materials. We show both theoretically and experimentally that these two effects partially compensate for each other, leading to nearly athermal devices. The wavelength shift of the resonance reflectance peak (< 1 nm) is a small fraction of the peak width (~11 nm) up to temperatures exceeding the room temperature by tens of degrees centigrade.
authors: University of Eastern Finland, Department of Physics and Mathematics, P.O. Box 111, FI-80101 Joensuu, Finland. rizwan.saleem@uef.fi
authors: M R
authors: MR
authors: Saleem
authors: P
authors: P
authors: Stenberg
authors: T
authors: T
authors: Alasaarela
authors: P
authors: P
authors: Silfsten
authors: M B
authors: MB
authors: Khan
authors: S
authors: S
authors: Honkanen
authors: J
authors: J
authors: Turunen
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005374:Filtration / Q000295:instrumentation*; D011108:Polymers / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D014025:Titanium / Q000737:chemistry*
chemical_list: D011108:Polymers; C009495:titanium dioxide; D014025:Titanium