PCs antenna (free space termination at optical frequencies)

Figure 1: The light emission at the end of the PCs waveguide (free space termination of PCs waveguide), 
the x0y plane component of Poynting vector is plotted.

Figure 2: The time average Poynting vector field is plotted.

Figure 3: The frequency characteristic of PCs antenna. It is possible to see that presented free space termination of PCs waveguide
at wide frequency range has a very low reflection (compared with the microwave waveguides, for example).

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