Oblique Du-Fort Frankel Beam Propagation Method

<table>(a) Field surface plot for <svg height="11.0375" id="M64" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 20.200001 11.0375" width="20.200001" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,11.0375)">
<g transform="translate(72,-63.17)">
<text transform="matrix(1,0,0,-1,-71.95,63.39)">
<tspan style="font-size: 12.50px; " x="0" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="6.2515001" y="0">0</tspan>
</text>
<text transform="matrix(1,0,0,-1,-59.45,68.56)">
<tspan style="font-size: 8.75px; " x="0" y="0">∘</tspan>
</text>
</g>
</g>
</svg> tilted waveguide on Cartesian mesh. Scale has been capped to show the stair case noise. (b) Field surface plot for <svg height="11.0375" id="M65" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 20.200001 11.0375" width="20.200001" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,11.0375)">
<g transform="translate(72,-63.17)">
<text transform="matrix(1,0,0,-1,-71.95,63.39)">
<tspan style="font-size: 12.50px; " x="0" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="6.2515001" y="0">0</tspan>
</text>
<text transform="matrix(1,0,0,-1,-59.45,68.56)">
<tspan style="font-size: 8.75px; " x="0" y="0">∘</tspan>
</text>
</g>
</g>
</svg> tilted waveguide on oblique coordinate. (c) Field surface plot for straight waveguide on Cartesian mesh.</table>

Advances in OptoElectronics

Oblique Du-Fort Frankel Beam Propagation Method

Figure 7