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Microstructure fibre turns infrared into a rainbow

17 Jun 2002

High-power pulses of 800 nm light shone into a silica fibre consisting of dozens of microholes surrounding a solid microcore emerge as a continuous spectrum of light ranging from the ultraviolet to the near-infrared.

The discovery was made by Jinendra Ranka and colleagues at Bell Laboratories.

Microstructured optical fibres, often called photonic crystal fibres, behave in a different way to conventional solid-silica fibres. In particular they show non-linear optical effects which make light behave in non-intuitive ways.

The group injected 100 femtosecond pulses with 8 kW of peak power into 75 cm lengths of microstructure fibre. It is possible to generate similar broadband spectra with conventional fibre only if the pulses have megawatt peak powers.

IDS Imaging Development SystemsCeNing Optics Co LtdSPECTROGON ABJenLab GmbHUniverse Kogaku America Inc.ECOPTIKHÜBNER Photonics
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