Fig. 4From: Two-Dimensional Hole-Array Grating-Coupling-Based Excitation of Bloch Surface Waves for Highly Sensitive BiosensingBloch surface wave at φ = 0°. Blue and red curves represent BSW reflectance as a function of incident angle (a) and wavelength (b) for DG-BSW and GC-BSW configurations, respectivelyBack to article page