Erbium fiber gain from the Giles parameters shipped with OptiCommPy (GPL-3.0), https://github.com/edsonportosilva/OptiCommPy, average inversion 0.75
Wavelength (nm)	Gain (dB)
1528.0	25.881
1528.2	26.070
1528.4	26.247
1528.6	26.413
1528.8	26.567
1529.0	26.709
1529.2	26.839
1529.4	26.956
1529.6	27.060
1529.8	27.152
1530.0	27.229
1530.2	27.294
1530.4	27.344
1530.6	27.380
1530.8	27.402
1531.0	27.408
1531.2	27.400
1531.4	27.376
1531.6	27.337
1531.8	27.282
1532.0	27.211
1532.2	27.125
1532.4	27.023
1532.6	26.906
1532.8	26.775
1533.0	26.629
1533.2	26.469
1533.4	26.297
1533.6	26.113
1533.8	25.918
1534.0	25.714
1534.2	25.503
1534.4	25.285
1534.6	25.063
1534.8	24.839
1535.0	24.615
1535.2	24.392
1535.4	24.172
1535.6	23.957
1535.8	23.749
1536.0	23.549
1536.2	23.358
1536.4	23.178
1536.6	23.009
1536.8	22.853
1537.0	22.710
1537.2	22.580
1537.4	22.464
1537.6	22.362
1537.8	22.272
1538.0	22.196
1538.2	22.132
1538.4	22.080
1538.6	22.039
1538.8	22.008
1539.0	21.986
1539.2	21.973
1539.4	21.967
1539.6	21.969
1539.8	21.976
1540.0	21.989
1540.2	22.007
1540.4	22.028
1540.6	22.053
1540.8	22.080
1541.0	22.108
1541.2	22.138
1541.4	22.167
1541.6	22.197
1541.8	22.226
1542.0	22.254
1542.2	22.280
1542.4	22.305
1542.6	22.328
1542.8	22.348
1543.0	22.367
1543.2	22.383
1543.4	22.396
1543.6	22.407
1543.8	22.415
1544.0	22.421
1544.2	22.424
1544.4	22.424
1544.6	22.422
1544.8	22.418
1545.0	22.412
1545.2	22.403
1545.4	22.393
1545.6	22.381
1545.8	22.368
1546.0	22.354
1546.2	22.338
1546.4	22.322
1546.6	22.305
1546.8	22.287
1547.0	22.269
1547.2	22.250
1547.4	22.231
1547.6	22.212
1547.8	22.192
1548.0	22.172
1548.2	22.153
1548.4	22.133
1548.6	22.115
1548.8	22.096
1549.0	22.079
1549.2	22.062
1549.4	22.045
1549.6	22.030
1549.8	22.015
1550.0	22.000
1550.2	21.986
1550.4	21.972
1550.6	21.959
1550.8	21.947
1551.0	21.935
1551.2	21.925
1551.4	21.915
1551.6	21.907
1551.8	21.899
1552.0	21.893
1552.2	21.887
1552.4	21.882
1552.6	21.877
1552.8	21.873
1553.0	21.870
1553.2	21.866
1553.4	21.863
1553.6	21.859
1553.8	21.856
1554.0	21.852
1554.2	21.848
1554.4	21.844
1554.6	21.839
1554.8	21.834
1555.0	21.829
1555.2	21.823
1555.4	21.816
1555.6	21.807
1555.8	21.797
1556.0	21.785
1556.2	21.771
1556.4	21.755
1556.6	21.737
1556.8	21.717
1557.0	21.694
1557.2	21.670
1557.4	21.643
1557.6	21.613
1557.8	21.581
1558.0	21.546
1558.2	21.508
1558.4	21.468
1558.6	21.425
1558.8	21.378
1559.0	21.329
1559.2	21.277
1559.4	21.223
1559.6	21.166
1559.8	21.105
1560.0	21.042
1560.2	20.976
1560.4	20.907
1560.6	20.833
1560.8	20.756
1561.0	20.675
1561.2	20.591
1561.4	20.503
1561.6	20.411
1561.8	20.316
1562.0	20.218
1562.2	20.117
1562.4	20.014
1562.6	19.909
1562.8	19.801
1563.0	19.691