enhanced fano resonance of organic material films deposited on arrays of asymmetric splitring resonators asrrs depositing very thin organic films on the surface of arrays of asymmetric splitring resonators asrrs produces a shift in their resonance spectra that can be utilized for sensitive analyte detection here we show that when polymethylmethacrylate pmma is used as an organic probe analyte on top of the asrr array the phase and amplitude of a characteristic molecular fano resonance associated with a carbonyl bond changes according to the spectral positions of the trapped mode resonance of the asrrs and their plasmonic reflection peaks furthermore we localize blocks of pmma at different locations on the asrr array to determine the effectiveness of detection of very small amounts of nonuniformly distributed analyte