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Schematic structure of the Mach–Zehnder–Fano interferometer described by an effective discrete model. and are incoming, and are scattered amplitudes. and are amplitudes of the forward and backward propagating waves. is the coupling to Fano defect. , , and stand for the number of sites.
Transmission coefficient of the discrete MZI model for: conventional interferometer (dotted) and the interferometer interacting with a cavity for symmetrically (solid) and asymmetrically (dashed) placed defect. Other parameters are: , , , and .
Direct numerical simulations of the Mach–Zehnder–Fano interferometer realized in a two-dimensional photonic crystal. (a) Transmission of the conventional MZI (dotted) and the MZI with a cavity paced either symmetrically (solid) or asymmetrically (dashed) (cf. Figure 2). (b) Wavelength dependence of the phase difference at the output of two MZI arms. The plots (c) and (d) demonstrate the electric field distribution at various resonances marked in plot (a).
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