@Article{, title={New Glasses for Optical Fibres and Their Applications (invited contribution)}, author={D.N. Payne}, journal={Iraqi Journal of Applied Physics Letters مجلة الرسائل العراقية في الفيزياء التطبيقية}, volume={2}, number={4}, pages={19-20}, year={2009}, abstract={Glasses with high-refractive index, high acousto-optic merit, low phonon energy and good solubility of the rare-earth are essential for optical waveguides devices of the future. At the ORC, research on advanced materials for multifunction waveguides is driven by device requirements. A more efficient optical fibre amplifier for 1.3um requires new glasses of lower vibrational energies to minimise nonradiative decay. Planar lossless splitters rely on a new waveguide material which allows highincorporation of erbium. Modulators need bulk or fibre optics which interact with acousto-optic power. Other new glasses with very high photosensitivity are being developed for fibre Bragg gratings, and highly non-linear glasses for all-optical switches. It is clear that for functions as diverse as amplification, splitting, modulation, switching or filtering the key to these devices is new glass materials.

} }