**4.2 The optical transmission of 1D PC with defects**

In this case it was introduced, in the structure of the one-dimensional photonic crystal, first an A type defect layer and then a B type defect layer. As before it is considered first that A is a dielectric material and then A is an epsilon negative material. B remains a double negative material in both cases.

In these experiments the thicknesses of the layers were kept constant - *dA* =24mm and *dB* =6mm - and the frequency was varied ω∈(0,9)*GHz*.
