Line Plot from Scientific Research

Transverse profile of the Fourier transform of the 3-m-wide waveguide for individual modes ( n = 1, 2, 3) and three implantation doses (2.5 pC m -2 , 5 pC m -2 , 10 pC m -2 ), normalized to the n = 1 mode for each dose (blue). The superimposed profiles (1 normalized optical transmittance, shown in grey) visualize the implanted areas outside the waveguide. The nominal waveguide width is indicated by dashed vertical lines. At lower implantation doses, the modes extend more into the adjacent implanted areas.

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