Tellurite And Fluorotellurite Glasses For Active And Passive

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3. Glass batching and melting; MDO 81 [8] M. D. O'Donnell, D. Furniss, V. K. Tikhomirov, and A. B. Seddon, "Low loss infrared fluorotellurite optical fibre," Physics and Chemistry of <strong>Glasses</strong>, in press.
4. Thermal properties and glass stability; MDO 82 4. Thermal properties and glass stability Characteristic temperatures – differential thermal analysis (DTA) and differential scanning calorimetry (DSC) Differential Thermal Analysis (DTA) and Differential Scanning Calorimetry (DSC) are techniques which can be used to determine temperatures at which changes of phase or state (e.g. glass ↔ supercooled liquid, around the glass transition temperature, Tg) occur in a material. These techniques are particularly important to the glass technologist, as key characteristic temperatures can be accurately obtained, such as Tg, the onset of crystallisation (Tx), the liquidus (Tl, the lowest temperature at normal pressure at which the system is entirely in the liquid state) and the solidus (Ts, the highest temperature at normal pressure at which the system is entirely in the solid state). From this information the Tx–Tg gap can be calculated, which is a rough estimate of glass stability on reheating, and an important consideration for fibredrawing, as this is the temperature region of greatest stability against crystallisation. <strong>For</strong> fibredrawing, a low enough viscosity (≈ 10 4.5 Pa.s) must be exhibited in this temperature region. Therefore, this gap should be maximised so the fibredrawing viscosity occurs as far below Tx as possible, as even a small degree of crystallinity in the glass will result in optical absorption and scattering losses over long optical pathlengths. However, for a glass to have a fibredrawing viscosity as far below Tx as possible, and a large Tx-Tg gap, would usually require a shallow viscosity-temperature relationship, i.e. a non-fragile glass-forming liquid [1, 2].
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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 24 2.3.2.
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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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Page 75 and 76: 2. Literature review; MDO 62 [20] J
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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 288 samp
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7. Surface properties; MDO 290 20
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7. Surface properties; MDO 292 20
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7. Surface properties; MDO 294 Wt.
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7. Surface properties; MDO 296 It c
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7. Surface properties; MDO 300 The
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7. Surface properties; MDO 302 Wt.
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7. Surface properties; MDO 304 All
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7. Surface properties; MDO 306 The
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[Zn(OH,F)F] / mol. % 7. Surface pro
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7. Surface properties; MDO 310 bind
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7. Surface properties; MDO 312 ZnF2
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7. Surface properties; MDO 314 clea
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7. Surface properties; MDO 316 have
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7. Surface properties; MDO 320 quan
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7. Surface properties; MDO 322 ∫
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7. Surface properties; MDO 324 This
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7. Surface properties; MDO 326 Ther
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7. Surface properties; MDO 328 [2]
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8. Fibre drawing; MDO 330 8. Fibre
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8. Fibre drawing; MDO 332 The data
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8. Fibre drawing; MDO 334 Table (8.
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Preform 8. Fibre drawing; MDO 336 S
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8. Fibre drawing; MDO 338 (a) (b) F
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8. Fibre drawing; MDO 340 Log10(η)
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8. Fibre drawing; MDO 342 sectioned
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8. Fibre drawing; MDO 344 Fig. (8.9
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8. Fibre drawing; MDO 350 Crystals
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8. Fibre drawing; MDO 352 8.2.4. Op
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8. Fibre drawing; MDO 354 Table (8.
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8. Fibre drawing; MDO 356 confirmed
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8. Fibre drawing; MDO 358 Log10(η)
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8. Fibre drawing; MDO 360 It can be
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8. Fibre drawing; MDO 362 undercool
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8. Fibre drawing; MDO 364 1. 2. 3.
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8. Fibre drawing; MDO 366 cross-sha
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8. Fibre drawing; MDO 368 A small n
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8. Fibre drawing; MDO 370 particles
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8. Fibre drawing; MDO 372 8.5. Refe
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8. Fibre drawing; MDO 374 [25] D. M
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9. Conclusions; MDO 376 optical bas
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9. Conclusions; MDO 378 • The as-
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9. Conclusions; MDO 380 9.3. Optica
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9. Conclusions; MDO 382 • For fib
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9. Conclusions; MDO 384 edge across
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9. Conclusions; MDO 386 • For gla
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9. Conclusions; MDO 388 • The Ag
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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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