Fig. 1. Schematic diagram of the HCMW, where the glass and the analyte serve as the guiding layer.

Fig. 2. (Color online) (a) Calculated reflectivity spectrum of the UOMs with respect to the incident angle. (b) Resonant angle shift caused by the change of the analyte RI.

Fig. 3. Configuration of the experimental setup.

Fig. 4. (Color online) (a) ATR spectra of each solution in the experiment. (b) The resonance dips shift for each solution referring to the same m.

Fig. 5. Compared experimental and theoretical angle shifts. The blue and red lines are the experimental and theoretical angle shifts, respectively.