Fibre optics manufacturing

Fibre optics manufacturing

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Caption: Fibre optics manufacturing. Hollow tubes of glass being treated to produce optical fibres. Each tube is being rotated on a lathe, and injected with silicon or germanium tetrachloride gases. A hydrogen flame brings the temperature to 2173 degrees Celsius, causing a silicon or germanium oxide deposit (very pure glass) to form on the inside of the tubes. The tubes will later be stretched out to produce the finished optical fibres. Optical fibres are thin glass wires, and consist of a glass core and an outer glass cladding. Total internal reflection of light at the core/cladding boundary allows data to be transmitted over long distances with little information loss. Photographed in France.

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