Manufacturing Industry

Fibres thinner than the wave-lengths of light they carry.(Optoelectronics)

Advanced Ceramics Report, March, 2004

Researchers at Harvard University have developed a process that can make optical fibres only 50 nm in thickness. Made from silicon dioxide (silica), the fibres carry light in an unusual way. As they are thinner than the wavelengths of light they transport, the silica serves as a guide around which light waves flow. In addition, because the researchers can fabricate the fibres with a uniform diameter and smooth surfaces down to the atomic level, the light waves remain coherent as they travel.

This means that the smaller fibres allow devices to transmit more information while using less space, and therefore may have applications in miniature medical products and photonics equipment such as nanoscale laser systems, tools for communications and sensors.

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