Plasmonic Band-Pass Microfilters for LWIR Absorption Spectroscopy
Figure 5
Power flow after introducing an optimized waveguide cavity. The aspect ratio of the lower picture is accurate, but the upper picture was stretched vertically by 2x for visibility. The color scale is power flow divided by incident power per unit area. Parameters used for this field plot: grating parameters same as above, m, m, nm, m, nm, , m.
