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Electrical & Computer Engineering
Integrated Microfabrication Lab
Machine Scheduler

ITU Wavelength Grid for Dense Wavelength Division Multiplexing

The International Telecommunication Union established the following grid for Dense Wavelength Division Multiplexing systems.   ITU recommends the 100 GHz (0.8 nm) spacing for DWDM operation.   The 50 GHz offset (0.4 nm spacing) offers twice the bandwidth.   The grid is centered at 193.10 THz (1552.52 nm).



L-Band
 C-Band
 S-Band
100 GHZ Grid
 50 GHz Offset
 100 GHZ Grid 50 GHz Offset 100 GHZ Grid 50 GHz Offset
THz
 nm
 THz nm THz nm THz nm THz nm THz nm
1
 186.00 1611.78 186.05 1611.35 191.00 1569.59 191.05 1569.18 196.00 1529.55 196.05 1529.16
2
 186.10 1610.92 186.15 1610.48 191.10 1568.77 191.15 1568.36 196.10 1528.77 196.15 1528.38
3
 186.20 1610.05 186.25 1609.62 191.20 1567.95 191.25 1567.54 196.20 1527.99 196.25 1527.60
4
 186.30 1609.19 186.35 1608.76 191.30 1567.13 191.35 1566.72 196.30 1527.21 196.35 1526.82
5
 186.40 1608.32 186.45 1607.89 191.40 1566.31 191.45 1565.90 196.40 1526.43 196.45 1526.04
6
 186.50 1607.46 186.55 1607.03 191.50 1565.49 191.55 1565.08 196.50 1525.66 196.55 1525.27
7
 186.60 1606.60 186.65 1606.17 191.60 1564.67 191.65 1564.27 196.60 1524.88 196.65 1524.49
8
 186.70 1605.74 186.75 1605.31 191.70 1563.86 191.75 1563.45 196.70 1524.11 196.75 1523.72
9
 186.80 1604.88 186.85 1604.45 191.80 1563.04 191.85 1562.63 196.80 1523.33 196.85 1522.94
10
 186.90 1604.02 186.95 1603.59 191.90 1562.23 191.95 1561.82 196.90 1522.56 196.95 1522.17
11
 187.00 1603.16 187.05 1602.73 192.00 1561.41 192.05 1561.01 197.00 1521.78 197.05 1521.40
12
 187.10 1602.31 187.15 1601.88 192.10 1560.60 192.15 1560.20 197.10 1521.01 197.15 1520.63
13
 187.20 1601.45 187.25 1601.02 192.20 1559.79 192.25 1559.38 197.20 1520.24 197.25 1519.86
14
 187.30 1600.60 187.35 1600.17 192.30 1558.98 192.35 1558.57 197.30 1519.47 197.35 1519.09
15
 187.40 1599.74 187.45 1599.31 192.40 1558.17 192.45 1557.76 197.40 1518.70 197.45 1518.32
16
 187.50 1598.89 187.55 1598.46 192.50 1557.36 192.55 1556.95 197.50 1517.93 197.55 1517.55
17
 187.60 1598.04 187.65 1597.61 192.60 1556.55 192.65 1556.15 197.60 1517.16 197.65 1516.78
18
 187.70 1597.18 187.75 1596.76 192.70 1555.74 192.75 1555.34 197.70 1516.40 197.75 1516.01
19
 187.80 1596.33 187.85 1595.91 192.80 1554.94 192.85 1554.53 197.80 1515.63 197.85 1515.25
20
 187.90 1595.48 187.95 1595.06 192.90 1554.13 192.95 1553.73 197.90 1514.86 197.95 1514.48
21
 188.00 1594.64 188.05 1594.21 193.00 1553.32 193.05 1552.92 198.00 1514.10 198.05 1513.72
22
 188.10 1593.79 188.15 1593.36 193.10 1552.52 193.15 1552.12 198.10 1513.33 198.15 1512.95
23
 188.20 1592.94 188.25 1592.52 193.20 1551.72 193.25 1551.31 198.20 1512.57 198.25 1512.19
24
 188.30 1592.10 188.35 1591.67 193.30 1550.91 193.35 1550.51 198.30 1511.81 198.35 1511.43
25
 188.40 1591.25 188.45 1590.83 193.40 1550.11 193.45 1549.71 198.40 1511.05 198.45 1510.67
26
 188.50 1590.41 188.55 1589.98 193.50 1549.31 193.55 1548.91 198.50 1510.28 198.55 1509.90
27
 188.60 1589.56 188.65 1589.14 193.60 1548.51 193.65 1548.11 198.60 1509.52 198.65 1509.14
28
 188.70 1588.72 188.75 1588.30 193.70 1547.71 193.75 1547.31 198.70 1508.76 198.75 1508.38
29
 188.80 1587.88 188.85 1587.46 193.80 1546.91 193.85 1546.51 198.80 1508.01 198.85 1507.63
30
 188.90 1587.04 188.95 1586.62 193.90 1546.11 193.95 1545.72 198.90 1507.25 198.95 1506.87
31
 189.00 1586.20 189.05 1585.78 194.00 1545.32 194.05 1544.92 199.00 1506.49 199.05 1506.11
32
 189.10 1585.36 189.15 1584.94 194.10 1544.52 194.15 1544.12 199.10 1505.73 199.15 1505.36
33
 189.20 1584.52 189.25 1584.10 194.20 1543.73 194.25 1543.33 199.20 1504.98 199.25 1504.60
34
 189.30 1583.68 189.35 1583.27 194.30 1542.93 194.35 1542.53 199.30 1504.22 199.35 1503.84
35
 189.40 1582.85 189.45 1582.43 194.40 1542.14 194.45 1541.74 199.40 1503.47 199.45 1503.09
36
 189.50 1582.01 189.55 1581.60 194.50 1541.34 194.55 1540.95 199.50 1502.71 199.55 1502.34
37
 189.60 1581.18 189.65 1580.76 194.60 1540.55 194.65 1540.16 199.60 1501.96 199.65 1501.59
38
 189.70 1580.35 189.75 1579.93 194.70 1539.76 194.75 1539.37 199.70 1501.21 199.75 1500.83
39
 189.80 1579.51 189.85 1579.10 194.80 1538.97 194.85 1538.58 199.80 1500.46 199.85 1500.08
40
 189.90 1578.68 189.95 1578.27 194.90 1538.18 194.95 1537.79 199.90 1499.71 199.95 1499.33
41
 190.00 1577.85 190.05 1577.43 195.00 1537.39 195.05 1537.00 200.00 1498.96 200.05 1498.58
42
 190.10 1577.02 190.15 1576.61 195.10 1536.60 195.15 1536.21 200.10 1498.21 200.15 1497.83
43
 190.20 1576.19 190.25 1575.78 195.20 1535.82 195.25 1535.42 200.20 1497.46 200.25 1497.09
44
 190.30 1575.36 190.35 1574.95 195.30 1535.03 195.35 1534.64 200.30 1496.71 200.35 1496.34
45
 190.40 1574.54 190.45 1574.12 195.40 1534.25 195.45 1533.85 200.40 1495.97 200.45 1495.59
46
 190.50 1573.71 190.55 1573.30 195.50 1533.46 195.55 1533.07 200.50 1495.22 200.55 1494.85
47
 190.60 1572.88 190.65 1572.47 195.60 1532.68 195.65 1532.28 200.60 1494.47 200.65 1494.10
48
 190.70 1572.06 190.75 1571.65 195.70 1531.89 195.75 1531.50 200.70 1493.73 200.75 1493.36
49
 190.80 1571.23 190.85 1570.82 195.80 1531.11 195.85 1530.72 200.80 1492.99 200.85 1492.61
50
 190.90 1570.41 190.95 1570.00 195.90 1530.33 195.95 1529.94 200.90 1492.24 200.95 1491.87