Reduction of OH absorption loss by deuteration in new glass materials for ultralow-loss fiber

Abstract

In conclusion, we report K/sub 2/O-MgO-SiO/sub 2/ (KMS) glass as a new candidate for use in fabricating ultralow-loss fiber. Its scattering properties and stability against phase separation are comparable or superior to those of sodium-silicate glasses such as NAS. We also achieved a loss reduction in NAS glass fiber of 800 dB/km at 1.55 /spl mu/m by OH-OD substitution.