Low loss and low OH content soda-lime-silica glass fibre

Low loss soda-lime-silica glass fibres of minimum loss of 4.23 dB/km at 0.85 ¿m were prepared with 6.5 dB/km extra absorption loss due to OH radicals at 0.97 ¿m. The loss factors were analysed from the impurity contents and scattering loss. These fibres have been developed by unique preparation techniques of wet mixing of raw materials and dry gas flow at glass melting.