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Tellurite And Fluorotellurite Glasses For Active And Passive

Tellurite And Fluorotellurite Glasses For Active And Passive

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6. Optical properties; MDO 198<br />

Fig. (6.21) gives the OH absorption bands for these glasses.<br />

Absorption coefficient / cm -1<br />

0.90<br />

0.85<br />

0.80<br />

0.75<br />

0.70<br />

0.65<br />

0.60<br />

0.55<br />

0.50<br />

0.45<br />

0.40<br />

CH / CH 2 / CH 3<br />

doublet<br />

Wavelength / µm<br />

4.0 3.5 3.0<br />

3120 cm -1<br />

3.21 µm<br />

5% WO 3<br />

7.5% WO 3<br />

0.35<br />

350<br />

2250 2500 2750 3000 3250 3500 3750<br />

Wavenumber / cm -1<br />

25% WO 3<br />

MOD014<br />

MOD015<br />

MOD016<br />

Fig. (6.21): OH absorption bands of glasses MOD014 (90TeO2-5WO3-5Nb2O5 mol. %),<br />

MOD015 (82.5TeO2-7.5WO3-10Nb2O5 mol. %), and MOD016 (70TeO2-25WO3-5Bi2O3<br />

mol. %).<br />

Fig. (6.22) to (6.24) show the Gaussian deconvolution of the OH bands of glasses<br />

MOD014 (90TeO2-5WO3-5Nb2O5 mol. %), MOD015 (82.5TeO2-7.5WO3-10Nb2O5 mol.<br />

%), and MOD016 (70TeO2-25WO3-5Bi2O3 mol. %).<br />

900<br />

850<br />

800<br />

750<br />

700<br />

650<br />

600<br />

550<br />

500<br />

450<br />

400<br />

Loss / dB.m -1

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