Table 1 Performance of our MDM dual-polarization coherent receiver
From: Complete vectorial optical mode converter using multi-layer metasurface
LP01 | LP11a | LP11b | LP01 (LO) | |||||
|---|---|---|---|---|---|---|---|---|
X pol. | Y pol. | X pol. | Y pol. | X pol. | Y pol. | X pol. | ||
m = 1 | m = 2 | m = 3 | m = 4 | m = 5 | m = 6 | m = 7 | ||
Ideal | Insertion loss (dB) | 0.82 | 0.81 | 0.83 | 0.81 | 0.80 | 0.82 | 0.80 |
Crosstalk (dB) | −25.5 | −26.5 | −27.3 | −26.4 | −23.3 | −23.9 | — | |
Phase error (deg) | −4.0 | −3.2 | −3.9 | −2.5 | −3.2 | −1.1 | — | |
Power imbalance (dB) | 0.49 | 0.21 | 0.23 | 0.14 | 0.36 | 0.48 | 0.92 | |
Example | Insertion loss (dB) | 2.71 | 2.81 | 2.67 | 2.77 | 2.64 | 2.67 | 2.73 |
Crosstalk (dB) | −25.0 | −26.4 | −26.5 | −25.8 | −24.7 | −25.0 | — | |
Phase error (deg) | −3.8 | −3.2 | −4.2 | −0.4 | −1.5 | −0.7 | — | |
Power imbalance (dB) | 0.56 | 0.27 | 0.32 | 0.24 | 0.38 | 0.68 | 1.03 | |
