Objective
This summer school deals with the subject of the interaction of the UV light with disordered matter especially silica based materials. These glasses are used for the elaboration of optical fibres, integrated optics or discrete optical devices such as lenses or mirrors. These are of great interest for telecommunication, especially for Wavelenght Division Multiplexing (WDM) optical transmission. From a scientific point of view, this school is centred on the understanding, of the mechanisms involved in index variation and of optical non-linear properties induced by UV irradiation. Several disciplines are involved in this field: chemists, physicists, engineers. Applications are in the field of new system of information in which the demand of engineers are high at the moment.
The problem of UV interaction with the silica based glasses is very complex: - The first step of the process is an absorption. But, we begin just at this date after 40 years of research to understand few structure defects. The last results will be discussed at this meeting especially the one from young researchers; - Then, the above excitation dumps following several channels: luminescence, bond breaking and ion migration or electron migration, our knowledge on that point is still very weak. So, we do not know in which direction it is useful to search for increasing the photosensitivity. - Now, following the physical transformation, secondary processes can occurs which also leads to change of index. For the designer of optical devices this is very important. These are examples of problems on which we will make a step forward: - the UV active defects of the silica based materials - the mechanisms of UV induced transformation - the calculation of UV induced birefringence in the wave-guides. This summer school is a European one i.e. European participants of the member states or associates are expected at the level of 35. 5 participants from East countries will be supported and only lecturers (13) are from the world chosen according their expertise.
ftp://ftp.cordis.lu/pub/improving/docs/HPCF-1999-00249-1.pdf(opens in new window)
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology materials engineering amorphous solids
- natural sciences physical sciences optics fibre optics
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Coordinator
France
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