Tellurite And Fluorotellurite Glasses For Active And Passive
Tellurite And Fluorotellurite Glasses For Active And Passive Tellurite And Fluorotellurite Glasses For Active And Passive
7. Surface properties; MDO 329 [15] B. V. R. Chowdari and P. Pramoda Kumari, "Studies on Ag2O.MxOy.TeO2 (MxOy=WO3, MoO3, P2O5 and B2O3) ionic conducting glasses," Solid State Ionics, vol. 113-115, pp. 665-675, 1998. [16] B. V. R. Chowdari, K. L. Tan, and L. Fang, "Synthesis and characterization of xCu2O·yTeO2·(1-x-y)MoO3 glass system," Solid State Ionics, vol. 113-115, pp. 711-721, 1998. [17] B. V. R. Chowdari and P. Pramoda Kumari, "Effect of mixed glass-formers in Ag2O.MoO3.TeO2 system," Journal of Physics and Chemistry of Solids, vol. 58, pp. 515-525, 1997. [18] B. V. R. Chowdari and P. Pramoda Kumari, "Synthesis and characterization of silver borotellurite glasses," Solid State Ionics, vol. 86-88, pp. 521-526, 1996. [19] B. V. R. Chowdari and P. Pramoda Kumari, "Thermal, electrical and XPS studies of Ag2O·TeO2·P2O5 glasses," Journal of Non-Crystalline Solids, vol. 197, pp. 31- 40, 1996. [20] B. V. R. Chowdari, K. L. Tan, and L. Fang, "Synthesis and characterisation of CuI·Cu2O·TeO2·MO3 (M=Mo or W) glass systems," Solid State Ionics, vol. 136- 137, pp. 1101-1109, 2000. [21] V. Kozhukharov, H. Burger, S. Neov, and B. Sidzhimov, "Atomic arrangement of a zinc-tellurite glass," Polyhedron, vol. 5, pp. 771-777, 1986. [22] N. N. Greenwood and A. Earnshaw, Chemistry of the elements. Oxford: Butterworth-Heinemann, 1995. [23] W. Vogel, Glass chemistry, 2nd ed. New York: Springer-Verlag, 1994. [24] S. Sakida, S. Hayakawa, and T. Yoko, "Part 1. Te-125 NMR study of tellurite crystals," Journal of Non-Crystalline Solids, vol. 243, pp. 1-12, 1999. [25] K. W. Bagnall, The chemistry of selenium, tellurium and polonium. London: Elsevier, 1966. [26] R. H. Doremus, "Ion exchange in glasses," in Ion exchange - a series of advances, vol. 2, J. A. Marinsky, Ed. New York: Marcel Dekker, 1969, pp. 1-42. [27] R. V. Ramaswamy and R. Srivastava, "Ion-exchanged glass wave-guides - a review," Journal of Lightwave Technology, vol. 6, pp. 984-1002, 1988. [28] Y. Ding, S. Jiang, T. Luo, Y. Hu, and N. Peyghambarian, "Optical waveguides prepared in Er 3+ -doped tellurite glass by Ag + -Na + ion-exchange," Proceedings of SPIE, vol. 4282, pp. 23-30, 2001.
8. Fibre drawing; MDO 330 8. Fibre drawing The properties most significant to fibre drawing (glass viscosity and the stress in a core / clad fibre) are reported here. The fibre drawing parameters are shown for preforms fibreised. The defects present in, and optical loss of pulled fibres will then be discussed. Recommendations for the possibility of reducing the optical loss in fluorotellurite fibre further in future work will then be given. 8.1. Experimental 8.1.1. Thermal mechanical analysis (TMA) A Perkin Elmer TMA7 was used to obtain viscosity and thermal expansion data in this study, using the parallel plate viscometry method [1]. This method was validated with a standard sample (National Bureau of Standards sample no. 710) over the 10 5 to 10 7.5 Pa.s viscosity range (the region close to the glass transition temperature, Tg, and the fibre drawing temperature, Tη). The instrument consisted of a sample chamber, inside a furnace, with an articulated silica pushrod. The sample dimensions were a disc of diameter 5 mm, and thickness (h) 2 to 3 mm. A stainless steel foot was attached to the pushrod, and the sample was placed on a stainless steel base in the sample chamber. A force of 250 mN was applied to the pushrod, which was calibrated using electronic scales. This force, and the force of the steel foot were recorded, giving the total force, F,
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7. Surface properties; MDO 329<br />
[15] B. V. R. Chowdari and P. Pramoda Kumari, "Studies on Ag2O.MxOy.TeO2<br />
(MxOy=WO3, MoO3, P2O5 and B2O3) ionic conducting glasses," Solid State<br />
Ionics, vol. 113-115, pp. 665-675, 1998.<br />
[16] B. V. R. Chowdari, K. L. Tan, and L. Fang, "Synthesis and characterization of<br />
xCu2O·yTeO2·(1-x-y)MoO3 glass system," Solid State Ionics, vol. 113-115, pp.<br />
711-721, 1998.<br />
[17] B. V. R. Chowdari and P. Pramoda Kumari, "Effect of mixed glass-formers in<br />
Ag2O.MoO3.TeO2 system," Journal of Physics and Chemistry of Solids, vol. 58,<br />
pp. 515-525, 1997.<br />
[18] B. V. R. Chowdari and P. Pramoda Kumari, "Synthesis and characterization of<br />
silver borotellurite glasses," Solid State Ionics, vol. 86-88, pp. 521-526, 1996.<br />
[19] B. V. R. Chowdari and P. Pramoda Kumari, "Thermal, electrical and XPS studies<br />
of Ag2O·TeO2·P2O5 glasses," Journal of Non-Crystalline Solids, vol. 197, pp. 31-<br />
40, 1996.<br />
[20] B. V. R. Chowdari, K. L. Tan, and L. Fang, "Synthesis and characterisation of<br />
CuI·Cu2O·TeO2·MO3 (M=Mo or W) glass systems," Solid State Ionics, vol. 136-<br />
137, pp. 1101-1109, 2000.<br />
[21] V. Kozhukharov, H. Burger, S. Neov, and B. Sidzhimov, "Atomic arrangement of<br />
a zinc-tellurite glass," Polyhedron, vol. 5, pp. 771-777, 1986.<br />
[22] N. N. Greenwood and A. Earnshaw, Chemistry of the elements. Oxford:<br />
Butterworth-Heinemann, 1995.<br />
[23] W. Vogel, Glass chemistry, 2nd ed. New York: Springer-Verlag, 1994.<br />
[24] S. Sakida, S. Hayakawa, and T. Yoko, "Part 1. Te-125 NMR study of tellurite<br />
crystals," Journal of Non-Crystalline Solids, vol. 243, pp. 1-12, 1999.<br />
[25] K. W. Bagnall, The chemistry of selenium, tellurium and polonium. London:<br />
Elsevier, 1966.<br />
[26] R. H. Doremus, "Ion exchange in glasses," in Ion exchange - a series of advances,<br />
vol. 2, J. A. Marinsky, Ed. New York: Marcel Dekker, 1969, pp. 1-42.<br />
[27] R. V. Ramaswamy and R. Srivastava, "Ion-exchanged glass wave-guides - a<br />
review," Journal of Lightwave Technology, vol. 6, pp. 984-1002, 1988.<br />
[28] Y. Ding, S. Jiang, T. Luo, Y. Hu, and N. Peyghambarian, "Optical waveguides<br />
prepared in Er 3+ -doped tellurite glass by Ag + -Na + ion-exchange," Proceedings of<br />
SPIE, vol. 4282, pp. 23-30, 2001.