Communications
Revolution
Communications
Networks
Optical
Fibres
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Future of
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Double Crucible



The molten core glass is placed in the inner crucible.
The molten cladding glass is placed in the outer crucible.

The two glasses come together at the base of the outer cucible and a fibre is drawn.

Long fibres can be produced (providing you don't let the content of the crucibles run dry!).

Step-index fibres and graded-index fibres can be drawn with this method.


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