Fig. 6
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(a) Reflectivity spectra obtained from T-matrix simulations for a planar wave, impinging on a stack of 10 coupled cavities (separated by 15 and 11 layer DBRs in alternation) normal to the 1D topological chain, shown for two propagation directions. Gain/loss parameter is γ = 1.87. (b) Spectral distribution of eigenvalues of this chain, obtained from the tight-binding model.
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