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Advances in OptoElectronics
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Special Issues
Advances in OptoElectronics
/
2011
/
Article
/
Fig 4
/
Research Article
Oblique Du-Fort Frankel Beam Propagation Method
Figure 4
Fourier transform of field overlaps along the waveguide to identify the true mode (
𝑛
e
ff
=
0
.
8
2
) and the appearance of spurious modes at various tilted angles.