Table 1 Comparison of calculated FWM combinations with the highest overlap integrals (up to three cases for each process).
From: High-gain far-detuned nonlinear frequency conversion in a few-mode graded-index optical fiber
\(\{\mu ,\eta ,\nu ,\kappa \}\) | \(\lambda ^{s}_\mu\) | \(\lambda ^{as}_\eta\) | \(\lambda ^{p1}_\nu\) | \(\lambda ^{p2}_\kappa\) | \(f_{s,as,p1,p2} \left( \upmu \text{m}^{-2}\right)\) |
|---|---|---|---|---|---|
\(\{1, 1, 1, 1\}\) \(\{1, 2, 1, 2\}\) | 3.524 3.475 | 0.627 0.629 | 1.064 1.064 | 1.064 1.064 | 0.0111 0.0045 |
\(\{2, 1, 1, 1\}\) \(\{2, 2, 2, 1\}\) \(\{1, 3, 1, 2\}\) | 1.351 1.364 1.373 | 0.556 0.554 0.552 | 1.064 1.064 1.064 | 0.625 0.625 0.625 | 0.0135 0.0059 0.0054 |
\(\{2, 1, 1, 1\}\) \(\{3, 1, 1, 2\}\) \(\{1, 2, 1, 1\}\) | 0.799 0.791 0.802 | 0.513 0.517 0.512 | 0.625 0.625 0.625 | 0.625 0.625 0.625 | 0.0171 0.0111 0.0106 |
\(\{2, 2, 1, 1\}\) \(\{3, 1, 1, 1\}\) \(\{2, 3, 1, 2\}\) | 0.906 0.894 0.909 | 0.477 0.480 0.476 | 0.625 0.625 0.625 | 0.625 0.625 0.625 | 0.0119 0.0113 0.0073 |
