Nonstandard FDTD Simulation-Based Design of CROW Wavelength Splitters

<table>Wavelength spectra from the simulation of the wavelength splitter of Figure <a href="../fig3/">3</a>. The observation ports are set at resonance-enhanced points outside disks <svg height="10.55" id="M129" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 11.325 10.55" width="11.325" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.55)">
<g transform="translate(72,-63.56)">
<text transform="matrix(1,0,0,-1,-71.95,63.61)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝐴</tspan>
</text>
</g>
</g>
</svg> and <svg height="10.325" id="M130" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 11.625 10.325" width="11.625" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.325)">
<g transform="translate(72,-63.74)">
<text transform="matrix(1,0,0,-1,-71.95,63.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝐵</tspan>
</text>
</g>
</g>
</svg>. (a) Spectrum on port <svg height="10.55" id="M131" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 11.325 10.55" width="11.325" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.55)">
<g transform="translate(72,-63.56)">
<text transform="matrix(1,0,0,-1,-71.95,63.61)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝐴</tspan>
</text>
</g>
</g>
</svg>. Interchannel extinction ratio = 21.5 dB. (b) Spectrum on port <svg height="10.325" id="M132" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 11.625 10.325" width="11.625" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.325)">
<g transform="translate(72,-63.74)">
<text transform="matrix(1,0,0,-1,-71.95,63.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝐵</tspan>
</text>
</g>
</g>
</svg>. Interchannel extinction ratio = 24.5 dB.</table>

Advances in Optical Technologies

fig7

Figure 7

Figure 7: Nonstandard FDTD Simulation-Based Design of CROW Wavelength Splitters 