Dong, L., Pinkstone, J., Russell, P.St.J. and Payne, D.N.
A study of UV absorption in germanosilicate fibre preforms
At CLEO '94: Conference on Lasers and Electro-Optics, United States.
08 - 12 May 1994.
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The strength of the 242 nm absorption band in MCVD germanosilicate fibre preforms is observed a) to be linearly dependent on Ge concentration and b) to increase by a factor of ~2.5 if O2 is replaced with He during the collapse process. It also reduces when the preform is co-doped with phosphorus, fluorine, aluminium and boron.
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