Optical Communications Rules of Thumb

| GHz | l nm |
|---|---|
| 197100 | 1521.02 |
| 197075 | 1521.21 |
| 197050 | 1521.40 |
| 197025 | 1521.60 |
| 197000 | 1521.79 |
| 196975 | 1521.98 |
| 196950 | 1522.18 |
| 196925 | 1522.37 |
| 196900 | 1522.56 |
| 196875 | 1522.76 |
| 196850 | 1522.95 |
| 196825 | 1523.14 |
| 196800 | 1523.34 |
| 196775 | 1523.53 |
| 196750 | 1523.72 |
| 196725 | 1523.92 |
| 196700 | 1524.11 |
| 196675 | 1524.30 |
| 196650 | 1524.50 |
| 196625 | 1524.69 |
| 196600 | 1524.89 |
| 196575 | 1525.08 |
| 196550 | 1525.27 |
| 196525 | 1525.47 |
| 196500 | 1525.66 |
| 196475 | 1525.86 |
| 196450 | 1526.05 |
| 196425 | 1526.24 |
| 196400 | 1526.44 |
| 196375 | 1526.63 |
| 196350 | 1526.83 |
| 196325 | 1527.02 |
| 196300 | 1527.22 |
| 196275 | 1527.41 |
| 196250 | 1527.61 |
| 196225 | 1527.80 |
| 196200 | 1527.99 |
| 196175 | 1528.19 |
| 196150 | 1528.38 |
| 196125 | 1528.58 |
| 196100 | 1528.77 |
| 196075 | 1528.97 |
| 196050 | 1529.16 |
| 196025 | 1529.36 |
| 196000 | 1529.55 |
| 195975 | 1529.75 |
| 195950 | 1529.94 |
| 195925 | 1530.14 |
| 195900 | 1530.33 |
| 195875 | 1530.53 |
| 195850 | 1530.73 |
| 195825 | 1530.92 |
| 195800 | 1531.12 |
| 195775 | 1531.31 |
| 195750 | 1531.51 |
| 195725 | 1531.70 |
| 195700 | 1531.90 |
| 195675 | 1532.09 |
| 195650 | 1532.29 |
| 195625 | 1532.49 |
| 195600 | 1532.68 |
| 195575 | 1532.88 |
| 195550 | 1533.07 |
| 195525 | 1533.27 |
| 195500 | 1533.47 |
| 195475 | 1533.66 |
| 195450 | 1533.86 |
| 195425 | 1534.05 |
| 195400 | 1534.25 |
| 195375 | 1534.45 |
| 195350 | 1534.64 |
| 195325 | 1534.84 |
| 195300 | 1535.04 |
| 195275 | 1535.23 |
| 195250 | 1535.43 |
| 195225 | 1535.63 |
| 195200 | 1535.82 |
| 195175 | 1536.02 |
| 195150 | 1536.22 |
| 195125 | 1536.41 |
| 195100 | 1536.61 |
| 195075 | 1536.81 |
| 195050 | 1537.00 |
| 195025 | 1537.20 |
| 195000 | 1537.40 |
| 194975 | 1537.59 |
| 194950 | 1537.79 |
| 194925 | 1537.99 |
| 194900 | 1538.19 |
| 194875 | 1538.38 |
| 194850 | 1538.58 |
| 194825 | 1538.78 |
| 194800 | 1538.98 |
| 194775 | 1539.17 |
| 194750 | 1539.37 |
| 194725 | 1539.57 |
| 194700 | 1539.77 |
| 194675 | 1539.96 |
| 194650 | 1540.16 |
| 194625 | 1540.36 |
| 194600 | 1540.56 |
| 194575 | 1540.76 |
| 194550 | 1540.95 |
| 194525 | 1541.15 |
| 194500 | 1541.35 |
| 194475 | 1541.55 |
| 194450 | 1541.75 |
| 194425 | 1541.94 |
| 194400 | 1542.14 |
| 194375 | 1542.34 |