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Configuration of the PC with separation between the waveguides and cavity of length , shown in an cross section.
Measured transmission for the straight waveguide (solid) compared to transmission for waveguides separated by , with (dotted) and without a cavity of (dashed). The cavity-induced resonance is below the straight guide.
Measured transmission for a cavity of length (dashed) displaying three resonant frequencies, compared to the straight waveguide and no cavity .
Effect of reducing cavity confinement on the resonant mode at . The PC size is decreased from 12 layers to 4 layers above the cavity, corresponding to the geometry of Fig. 3.
FDTD simulations of the transmission through the waveguides separated by and coupled by a cavity (length ), four layers above the waveguides. The input guide was excited by a pulsed source to obtain the transmission in the output waveguide.
-field intensities in the plane containing the input waveguide, exit waveguide, and the cavity. Simulations are for the resonant frequency of at 1000, 3000, 5000, and 9000 time steps. The intensity scale is logarithmic.
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