Optical Communications Rules of Thumb

| GHz | l nm | Dl |
|---|---|---|
| 197100 | 1521.02 | |
| 197000 | 1521.79 | 0.77 |
| 196900 | 1522.56 | 0.77 |
| 196800 | 1523.34 | 0.77 |
| 196700 | 1524.11 | 0.77 |
| 196600 | 1524.89 | 0.78 |
| 196500 | 1525.66 | 0.78 |
| 196400 | 1526.44 | 0.78 |
| 196300 | 1527.22 | 0.78 |
| 196200 | 1527.99 | 0.78 |
| 196100 | 1528.77 | 0.78 |
| 196000 | 1529.55 | 0.78 |
| 195900 | 1530.33 | 0.78 |
| 195800 | 1531.12 | 0.78 |
| 195700 | 1531.90 | 0.78 |
| 195600 | 1532.68 | 0.78 |
| 195500 | 1533.47 | 0.78 |
| 195400 | 1534.25 | 0.78 |
| 195300 | 1535.04 | 0.79 |
| 195200 | 1535.82 | 0.79 |
| 195100 | 1536.61 | 0.79 |
| 195000 | 1537.40 | 0.79 |
| 194900 | 1538.19 | 0.79 |
| 194800 | 1538.98 | 0.79 |
| 194700 | 1539.77 | 0.79 |
| 194600 | 1540.56 | 0.79 |
| 194500 | 1541.35 | 0.79 |
| 194400 | 1542.14 | 0.79 |
| 194300 | 1542.94 | 0.79 |
| 194200 | 1543.73 | 0.79 |
| 194100 | 1544.53 | 0.80 |
| 194000 | 1545.32 | 0.80 |
| 193900 | 1546.12 | 0.80 |
| 193800 | 1546.92 | 0.80 |
| 193700 | 1547.72 | 0.80 |
| 193600 | 1548.51 | 0.80 |
| 193500 | 1549.32 | 0.80 |
| 193400 | 1550.12 | 0.80 |
| 193300 | 1550.92 | 0.80 |
| 193200 | 1551.72 | 0.80 |
| 193100 | 1552.52 | 0.80 |
| 193000 | 1553.33 | 0.80 |
| 192900 | 1554.13 | 0.81 |
| 192800 | 1554.94 | 0.81 |
| 192700 | 1555.75 | 0.81 |
| 192600 | 1556.56 | 0.81 |
| 192500 | 1557.36 | 0.81 |
| 192400 | 1558.17 | 0.81 |
| 192300 | 1558.98 | 0.81 |
| 192200 | 1559.79 | 0.81 |
| 192100 | 1560.61 | 0.81 |
| 192000 | 1561.42 | 0.81 |
| 191900 | 1562.23 | 0.81 |
| 191800 | 1563.05 | 0.81 |
| 191700 | 1563.86 | 0.82 |
| 191600 | 1564.68 | 0.82 |
| 191500 | 1565.50 | 0.82 |
| 191400 | 1566.31 | 0.82 |
| 191300 | 1567.13 | 0.82 |
| 191200 | 1567.95 | 0.82 |
| 191100 | 1568.77 | 0.82 |
| 191000 | 1569.59 | 0.82 |
| 190900 | 1570.42 | 0.82 |
| 190800 | 1571.24 | 0.82 |
| 190700 | 1572.06 | 0.82 |
| 190600 | 1572.89 | 0.82 |
| 190500 | 1573.71 | 0.83 |
| 190400 | 1574.54 | 0.83 |
| 190300 | 1575.37 | 0.83 |
| 190200 | 1576.20 | 0.83 |
| 190100 | 1577.03 | 0.83 |
| 190000 | 1577.86 | 0.83 |
| 189900 | 1578.69 | 0.83 |