Fig. 3
From: Biosensing with the singular phase of an ultrathin metal-dielectric nanophotonic cavity

Reflectivity spectra and field distribution. a Experimental and b calculated reflection spectra for p- and s-polarization at a 61° angle of incidence. The obtained reflected intensity at 814 nm is 0.001%. c Calculated field distribution along the four-layered system at the point of darkness condition (814 nm and 61°), and d its magnitude as a function of depth along the multilayer