Title :
Single-mode fibres with extremely high-Δ and small-dimension pure GeO2 core for efficient nonlinear optical applications
Author :
Hosaka, Tatsuya ; Sudo, Shunsuke ; Itoh, Hayato ; Okamoto, K.
Author_Institution :
NTT Optoelectron. Labs., Kanagawa
fDate :
6/23/1988 12:00:00 AM
Abstract :
Single-mode fibres with 8.2% Δ and a 1.4 μm diameter-GeO 2 core have been prepared for efficient stimulated Raman effect. When pumping a 2.7 m-long fibre by a Q-switched and mode-locked Nd:YAG laser (λ=1.064 μm), the first Stokes light (λ=1.114 μm) and second Stokes light (λ=1.169 μm) have been observed at the input peak power levels of 24 W and 40 W, respectively. These results indicate that the above critical power levels are approximately 10-2~10-3 smaller than those for the high-silica single-mode fibre
Keywords :
fibre optics; germanium compounds; nonlinear optics; optical fibres; stimulated Raman scattering; 1.064 micron; 1.114 micron; 1.169 micron; 1.4 micron; 2.7 m; 24 W; 40 W; GeO2 core; Q-switched lasers; YAG:Nd laser; YAl5O12:Nd; efficient nonlinear optical applications; first Stokes light; power levels; preparation; second Stokes light; single mode fibres; small dimension core; stimulated Raman effect;
Journal_Title :
Electronics Letters
