Figure 1
(a) Illustration of the leaky wave waveguide-grating. (b) TM-polarized reflectivity spectrum as a function of wavelength (λ) for single-period waveguide design with different periods (Λ = 380 nm, Λ = 400 nm, and Λ = 420 nm). Also, no biolayer (dbio = 0) is considered. (c,d) Normalized electric field intensity profiles above and within such a grating with Λ = 380 nm at two different resonant wavelengths. The dotted lines represent the layered of the biological analyte.
