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(a) Schematic diagram of the CROW with increased air holes (CROW-A). There are five defect cavities and the number of holes between each cavity is 2 . (b) Schematic diagram of the CROW with the reduced holes (CROW-B). and are the same as in (a). A supercell is highlighted. (c) Dispersion diagram of the unperturbed triangular array PC for TE mode.
(a) Steady-state E-field variation for CROW-A and (b) similarly for CROW-B with equal to 1.
The intercavity distance vs enhancement parameter for CROW-A (circle) and CROW-B (plus).
(a) Resonant frequency shift of CROW-A for six different cases ( to ). (b) Similarly for CROW-B. (c) Normalized frequency variation for the same refractive indexes.
Design parameters of the CROW operating in the THz region. The lattice periodicity is denoted by and . Two types of defect radius were used and . and describe the number of air holes between each cavity and the number of cavities, respectively.
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