1 September 1990 Photosensitive changes in Ge-doped fibres observed by raman spectroscopy
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Proceedings Volume 1314, Fibre Optics '90; (1990) https://doi.org/10.1117/12.21983
Event: Fibre Optics '90, 1990, London, United Kingdom
Raman spectroscopy has been used to study photosensitive effects in Ge-doped optical fibres. The spectrum obtained for a sample of the original fibre used by Hill et al is shown to have a large broadband fluorescence. A rapid photobleaching of a fluorescence band at 570nm has been observed in the photosensitive fibre. It is shown that the Ge(1) and Ge(2) defects have appropriate properties to produce a refractive index grating via a photobleaching process. A weak photosensitive production of SiH occurs in Ge-doped fibres subjected to 488nm, which have previously been subjected to hydrogen diffusion, the rate of production is found to be linear with the power squared.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daniel McStay, Daniel McStay, } "Photosensitive changes in Ge-doped fibres observed by raman spectroscopy", Proc. SPIE 1314, Fibre Optics '90, (1 September 1990); doi: 10.1117/12.21983; https://doi.org/10.1117/12.21983

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