Figure 3.

Electromagnetic energy density profiles of the SHP and AHP waveguides. The profiles are SHP waveguides (a) in air and (b) on a silica substrate, and (c) AHP waveguides on silica substrate. (d, e, f) Corresponding normalized electromagnetic energy densities along the Y-axis (from 0 to 0.6 μm) are shown.

Wei et al. Nanoscale Research Letters 2014 9:13   doi:10.1186/1556-276X-9-13
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