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Tellurite And Fluorotellurite Glasses For Active And Passive

Tellurite And Fluorotellurite Glasses For Active And Passive

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10. Future work; MDO 393<br />

10. Future work<br />

• Raman spectroscopy / Raman gain measurements of fluorotellurite glasses (TeO2-<br />

Na2O-ZnF2) in collaboration with Dr. K. Richardson’s group at the University of<br />

Central Florida [1].<br />

• Mechanical strength measurements fluorotellurites (TeO2-Na2O-ZnF2):<br />

o Hardness / microhardness of bulk glass / glass-ceramics.<br />

o Tensile strength of fibres.<br />

o 2-point bend test of fibres.<br />

• Further compositional development of Er +3 -doped TeO2-Na2O-ZnF2 glasses to<br />

identify phase field where ceraming process can be controlled for optimum<br />

emission band enhancement.<br />

• Development of fibre-on-glass (FOG, invented by Prof. P. Sewell) devices using<br />

TeO2-Na2O-ZnF2 glasses, with Profs T. Benson and P. Sewell’s modelling group<br />

at Nottingham University. These comprise of unstructured fibres ‘pressed’ into a<br />

slightly lower refractive index substrate (using TMA). Early investigations have<br />

shown light guiding is possible [2]. Fig. (10.1) shows this device under the<br />

ESEM, (10.2) the modelling of the device, and (10.3) the device guiding laser<br />

light.

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