TABLE I. Coupling efficiencies for the combined metacoupler. Rows 2–7 display the coupling efficiencies (in percentage) between the incident Gaussian beam (with beam radius 6 μm) of polarization jui and the TE1 mode, evaluated at the six ports defined in Fig. 4(b). The eighth row shows the total coupling efficiency. The three bottom rows display the normalized contrast in coupling efficiency for the launching directions specified by the three metacouplers, with numbers in parentheses corresponding to the normalized Stokes parameters.
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