A unique feature of this tower is that
it is dual-sided, allowing for a variety of preforms to be drawn into fibres.
Side 1 is equipped with a graphite
resistance furnace, capable of reaching temperatures of up to 2500 OC
and is designed to draw silica preforms with diameters ranging from <5mm to
Side 2 is equipped with 2 furnaces – a graphite resistance furnace and a
softglass furnace, used interchangeably and designed to draw silica
canes/capillaries and softglass (chalcogenide, fluoride, heavy metal oxide and
tellurite) fibres respectively.