Tellurite And Fluorotellurite Glasses For Active And Passive

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8. Fibre drawing; MDO 339 8.2. Results 8.2.1. Viscosity (TMA) Fig. (8.4) shows the viscosity / temperature behaviour of glasses MOF001 (65TeO2- 10Na2O-25ZnF2 mol. %) and MOF005 (70TeO2-10Na2O-20ZnF2 mol. %) [9]. Log10( η η) / Pa.s 7.5 7.0 6.5 6.0 5.5 5.0 Fig. (8.4): Viscosity / temperature behaviour of glasses MOF001 (65TeO2-10Na2O- 25ZnF2 mol. %) and MOF005 ((70TeO2-10Na2O-20ZnF2 mol. %) [9]. It can be seen the viscosity decreased for a given temperature with increasing batched ZnF2 in the glass. Fig. (8.5) and (8.6) shows the modelling for these glasses. The dashed lines show Tg measured by DTA (see table (4.2)), and the fibre drawing viscosity (10 4.5 Pa.s) [9]. 270 280 290 300 310 320 330 Temperature / o C ⎯ 20 mol. % ZnF2 (core) ⎯ 25 mol. % ZnF2 (clad)
8. Fibre drawing; MDO 340 Log10(η) η) / Pa.s 11 10 9 8 7 6 5 10 4.5 Pa.s Log10(η) η) / Pa.s 4 3 T g 235 245 255 265 275 285 295 305 315 325 335 345 Temperature / o C TMA data Arrhenius CG Fig. (8.5): Viscosity / temperature modelling for cladding glass MOF001 (65TeO2- 10Na2O-25ZnF2 mol. %) [9]. 11 10 9 8 7 6 5 10 4.5 Pa.s 4 3 T g 235 245 255 265 275 285 295 305 315 325 335 345 Temperature / o C TMA data Arrhenius CG Fig. (8.6): Viscosity / temperature modelling for core glass MOF005 (70TeO2-10Na2O- 20ZnF2 mol. %) [9]. Table (8.4) summarises the parameters obtained from the models from table (8.1) for both glasses and predicted temperatures of fibre drawing from the models.
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TELLURITE AND FLUOROTELLURITE GLASS
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Abstract Glasses systems based on T
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Contents; MDO i Contents Contents i
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Contents; MDO iii 6.1.2.1. Method a
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Glossary; MDO Glossary aM = partial
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Glossary; MDO λ = wavelength λn =
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Glossary; MDO Ψ = complex dielectr
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1. Introduction; MDO 2 communicatio
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1. Introduction; MDO 4 Infrared tra
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1. Introduction; MDO 6 1.4. Thesis
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1. Introduction; MDO 8 [14] J. E. S
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2. Literature review; MDO 10 one of
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2. Literature review; MDO 12 superc
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2. Literature review; MDO 14 2.2.2.
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2. Literature review; MDO 16 phenom
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2. Literature review; MDO 18 tenden
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2. Literature review; MDO 20 crysta
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2. Literature review; MDO 22 the Za
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2. Literature review; MDO 26 Champa
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2. Literature review; MDO 28 the ad
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2. Literature review; MDO 30 (a) (b
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2. Literature review; MDO 32 showed
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2. Literature review; MDO 34 absorp
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2. Literature review; MDO 36 sharp
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2. Literature review; MDO 38 near f
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2. Literature review; MDO 40 where
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2. Literature review; MDO 42 Transm
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2. Literature review; MDO 44 origin
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2. Literature review; MDO 48 Bragli
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2. Literature review; MDO 52 and su
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2. Literature review; MDO 54 be bro
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2. Literature review; MDO 58 Table
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2. Literature review; MDO 62 [20] J
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2. Literature review; MDO 64 [47] S
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3. Glass batching and melting; MDO
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4. Thermal properties and glass sta
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5. Crystallisation studies; MDO 134
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6. Optical properties; MDO 166 75-5
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6. Optical properties; MDO 168 Fig.
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6. Optical properties; MDO 170 In r
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6. Optical properties; MDO 172 wher
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6. Optical properties; MDO 176 Abso
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6. Optical properties; MDO 178 ener
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6. Optical properties; MDO 180 6.1.
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6. Optical properties; MDO 182 ( n
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6. Optical properties; MDO 186 %),
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6. Optical properties; MDO 188 Tabl
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Percentage (%) 80 70 60 50 40 30 20
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6. Optical properties; MDO 204 Loss
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6. Optical properties; MDO 208 Tabl
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6. Optical properties; MDO 214 Loss
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Refractive index, n , at 632.8 nm 6
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6. Optical properties; MDO 228 tell
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6. Optical properties; MDO 230 mole
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6. Optical properties; MDO 232 occu
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6. Optical properties; MDO 234 The
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6. Optical properties; MDO 236 addi
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6. Optical properties; MDO 238 an o
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6. Optical properties; MDO 240 30 m
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6. Optical properties; MDO 244 zinc
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6. Optical properties; MDO 246 [4]
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6. Optical properties; MDO 248 [32]
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7. Surface properties; MDO 250 7.1.
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7. Surface properties; MDO 252 For
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7. Surface properties; MDO 254 can
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7. Surface properties; MDO 256 wher
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7. Surface properties; MDO 258 etch
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7. Surface properties; MDO 260 Elem
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7. Surface properties; MDO 262 All
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7. Surface properties; MDO 264 beco
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7. Surface properties; MDO 266 prov
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7. Surface properties; MDO 268 cont
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7. Surface properties; MDO 270 LaB6
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7. Surface properties; MDO 272 7.2.
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7. Surface properties; MDO 274 Tabl
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7. Surface properties; MDO 276 This
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7. Surface properties; MDO 278 It c
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7. Surface properties; MDO 280 Fig.
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7. Surface properties; MDO 282 CPS
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7. Surface properties; MDO 284 Fig.
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7. Surface properties; MDO 286 Tabl
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Page 345 and 346: 8. Fibre drawing; MDO 332 The data
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9. Conclusions; MDO 390 • Increas
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9. Conclusions; MDO 392 [5] I. Shal
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10. Future work; MDO 394 Fig. (10.1
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Temperature / o C 10. Future work;
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Tellurite And Fluorotellurite Glasses For Active And Passive

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