Enhanced photosensitivity in tin-codoped germanosilicate optical fibers
- 1 September 1995
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 7 (9) , 1048-1050
- https://doi.org/10.1109/68.414699
Abstract
Enhanced photosensitivity is found in tin-codoped germanosilicate optical fibers. A photo-induced refractive index change (/spl sim/1.4/spl times/10/sup -3/) 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 1.55 /spl mu/m. High temperature stability of the gratings in tin-codoped germanosilicate fibers is also much over boron-codoped fibers.Keywords
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