Coloured SEM of a laser unit for fibre optics

Coloured SEM of a laser unit for fibre optics

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Credit: VOLKER STEGER/SCIENCE PHOTO LIBRARY

Caption: Fibre optic laser unit. Coloured scanning electron micrograph (SEM) of a laser unit used in fibre optic communications. A human hair (orange) is shown for scale. Fibre optics carry information as pulses of laser light, and are far more efficient than electrical wires. The tiny laser here sends the pulses along the glass fibre optic cables. The yellow circle (upper centre) is the apparatus which actually focuses the light into the glass fibre. These components are found in practically every digital phone switch. Magnification: x25 at 5x7cm size.

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Keywords: communication, communications, digital, digital communications, fibre optic, fibre optics, hair, laser, laser unit, on fibre optics laser, optical fibres, sem, technology

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