Dong, L., Cruz, J.L., Reekie, L., Xu, M.G. and Payne, D.N.
Enhanced photosensitivity in tin-codoped germanosilicate optical fibres.
IEEE Photonics Technology Letters, 7, (9), . (doi:10.1109/68.414699).
Enhanced photosensitivity is found in Tin-codoped germanosilicate optical fibers. A photo-induced refractive index change (~1.4 x 10^-3 times larger than that observed in pure germanosilicate fibers has been demonstrated. Unlike the technique of using Boron-codoping to enhance the photosensitivity of germanosilicate fibers, Tin-doping does not have a significant effect on fiber loss at the important telecommunication window of 1.55µm. High temperature stability of the gratings in Tin-codoped germanosilicate fibers is also much over Boron-codoped fibers.
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