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Additional info for Advances in Photonics for Information and Communication
It manufactures erbium-doped fibres. Its core competencies are materials, processes, highspeed electronics and manufacturing. com Ocean Optics Inc. supplies miniature spectrometers, fibre-optic chemical sensors, thin films and light sources. sg/ Photonik Technologies sells laser modules, optical components, crystals and light sources across the spectrum from ultraviolet to far infrared. It offers customised and turnkey solutions. It started in south-east Asia and is expanding into North America, east Asia and Europe.
Direct writing and fibre deposition can be combined to produce structures such as coiled springs, fibrous scaffolds or fibre-reinforced laminar composites. Advantages Materials produced by LCVD possess high purity and low porosity, excellent mechanical properties and thermal stability. LCVD uses localised heating of the substrate not the entire substrate. Patterns can be created without using lithography. Applications Silicon fibre growth Direct laser writing. Page 26 © Copyright Pira International Ltd 2007 Photonics in information and communication 4 This chapter deals with the use of photonic materials and devices for key applications in information and communication.
Material properties can also be introduced by artificially fabricating extrinsic low-dimensional homogeneities. Some metamaterials have a negative refractive index. Rays entering the material get refracted on the same side of the normal rather than the opposite side. This makes them useful in applications such as optical bandpass filters and modulators. Karlsruhe University has fabricated a metamaterial that has a negative refractive index at 1,500nm; it could be used to tune lasers for telecoms applications.
Advances in Photonics for Information and Communication by Pira International Ltd