Erbium fiber gain from the Giles parameters shipped with OptiCommPy (GPL-3.0), https://github.com/edsonportosilva/OptiCommPy, average inversion 0.70
Wavelength (nm)	Gain (dB)
1528.0	23.701
1528.2	23.901
1528.4	24.091
1528.6	24.270
1528.8	24.439
1529.0	24.596
1529.2	24.742
1529.4	24.877
1529.6	25.000
1529.8	25.111
1530.0	25.210
1530.2	25.296
1530.4	25.370
1530.6	25.430
1530.8	25.476
1531.0	25.508
1531.2	25.527
1531.4	25.531
1531.6	25.520
1531.8	25.494
1532.0	25.454
1532.2	25.399
1532.4	25.329
1532.6	25.245
1532.8	25.146
1533.0	25.034
1533.2	24.909
1533.4	24.771
1533.6	24.622
1533.8	24.462
1534.0	24.294
1534.2	24.117
1534.4	23.935
1534.6	23.748
1534.8	23.558
1535.0	23.368
1535.2	23.178
1535.4	22.991
1535.6	22.809
1535.8	22.632
1536.0	22.462
1536.2	22.301
1536.4	22.149
1536.6	22.008
1536.8	21.878
1537.0	21.760
1537.2	21.655
1537.4	21.562
1537.6	21.482
1537.8	21.415
1538.0	21.360
1538.2	21.316
1538.4	21.283
1538.6	21.261
1538.8	21.248
1539.0	21.244
1539.2	21.248
1539.4	21.259
1539.6	21.277
1539.8	21.301
1540.0	21.329
1540.2	21.362
1540.4	21.399
1540.6	21.438
1540.8	21.479
1541.0	21.522
1541.2	21.566
1541.4	21.610
1541.6	21.654
1541.8	21.697
1542.0	21.739
1542.2	21.779
1542.4	21.817
1542.6	21.854
1542.8	21.889
1543.0	21.921
1543.2	21.950
1543.4	21.978
1543.6	22.002
1543.8	22.024
1544.0	22.044
1544.2	22.060
1544.4	22.074
1544.6	22.086
1544.8	22.095
1545.0	22.102
1545.2	22.107
1545.4	22.110
1545.6	22.112
1545.8	22.112
1546.0	22.110
1546.2	22.108
1546.4	22.105
1546.6	22.101
1546.8	22.096
1547.0	22.090
1547.2	22.084
1547.4	22.077
1547.6	22.070
1547.8	22.063
1548.0	22.055
1548.2	22.048
1548.4	22.040
1548.6	22.033
1548.8	22.027
1549.0	22.021
1549.2	22.016
1549.4	22.011
1549.6	22.007
1549.8	22.003
1550.0	22.000
1550.2	21.997
1550.4	21.994
1550.6	21.992
1550.8	21.991
1551.0	21.990
1551.2	21.990
1551.4	21.991
1551.6	21.993
1551.8	21.996
1552.0	22.000
1552.2	22.005
1552.4	22.011
1552.6	22.016
1552.8	22.023
1553.0	22.029
1553.2	22.035
1553.4	22.042
1553.6	22.048
1553.8	22.054
1554.0	22.060
1554.2	22.066
1554.4	22.071
1554.6	22.076
1554.8	22.081
1555.0	22.085
1555.2	22.088
1555.4	22.090
1555.6	22.091
1555.8	22.089
1556.0	22.086
1556.2	22.081
1556.4	22.074
1556.6	22.065
1556.8	22.053
1557.0	22.039
1557.2	22.022
1557.4	22.004
1557.6	21.982
1557.8	21.958
1558.0	21.931
1558.2	21.901
1558.4	21.868
1558.6	21.832
1558.8	21.793
1559.0	21.751
1559.2	21.707
1559.4	21.659
1559.6	21.609
1559.8	21.555
1560.0	21.499
1560.2	21.439
1560.4	21.376
1560.6	21.309
1560.8	21.238
1561.0	21.163
1561.2	21.083
1561.4	21.000
1561.6	20.913
1561.8	20.823
1562.0	20.729
1562.2	20.633
1562.4	20.535
1562.6	20.433
1562.8	20.329
1563.0	20.223