Tellurite And Fluorotellurite Glasses For Active And Passive

6. Optical properties; MDO 199
Absorption coefficient / cm -1
0.30
0.25
0.20
0.15
0.10
0.05
0.00
y0 0 ±0
xc1 2964.47413 ±13.20502
w1 419.56452 ±11.2152
A1 84.44025 ±5.16464
xc2 3212.59423 ±10.95098
w2 246.844 ±24.90847
A2 31.96642 ±7.61301
xc3 3377.15755 ±3.74753
w3 152.22202 ±7.22969
A3 15.20359 ±3.14591
Baseline: y=[(1420/x)^4]+0.355
Chi^2 = 0.00001
R^2 = 0.99787
Wavelength / µm
4.0 3.8 3.6 3.4 3.2 3.0 2.8
FTIR data
Gaussian fit
Strong OH (2964 cm -1 )
Weak OH (3213 cm -1 )
Free OH (3377 cm -1 )
2600 2800 3000 3200 3400
0
3600
Wavenumber / cm -1
Fig. (6.22): Gaussian deconvolution of the OH bands of glass MOD014 (90TeO2-5WO3-
5Nb2O5 mol. %).
Absorption coefficient / cm -1
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0.00
y0 0 ±0
xc1 2984.57272 ±9.81671
w1 389.50082 ±8.78922
A1 53.39708 ±2.59979
xc2 3239.49078 ±6.30022
w2 249.21752 ±13.66319
A2 26.37807 ±3.5923
xc3 3390.56815 ±1.50988
w3 139.80772 ±6.19734
A3 9.43599 ±1.44928
Baseline: y=[(1370/x)^4]+0.371
Chi^2 = 4.4128E-6
R^2 = 0.99826
Wavelength / µm
3.8 3.6 3.4 3.2 3 2.8
FTIR data
Gaussian fit
Strong OH (2985 cm -1 )
Weak OH (3239 cm -1 )
Free OH (3391 cm -1 )
2600 2800 3000 3200 3400
0
3600
Wavenumber / cm -1
Fig. (6.23): Gaussian deconvolution of the OH bands of glass MOD015 (82.5TeO2-
7.5WO3-10Nb2O5 mol. %).
300
250
200
150
100
50
200
180
160
140
120
100
80
60
40
20
Loss / dB.m -1
Loss / dB.m -1