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Enhanced photosensitivity in silicate optical fibres by thermal treatment
Gilberto Brambilla
Optoelectronics Research Centre, University of Southampton, UK
Valerio Pruneri
Institute of Photonic Sciences, Mediterranean Technology Park, 08860 Castelldefels, Spain and Institució Catalana de Recerca i Estudis Avançats, Barcelona 08010, Spain
Abstract
Enhanced photosensitivity using thermal treatment has been observed on several silicate optical fibers. The effect of the treatment on fibers with different dopants has been tested via Bragg grating inscription. The presence of Ge or Sn atom has been established to be fundamental for the effect to occur. To explain the main features a model involving defect dynamics is proposed.
Applied Physics Letters (2007) Vol.90 pp.111905
doi: 10.1063/1.2714096
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Copyright University of Southampton 2006