Title :
Molecular hydrogen behaviour for loss increase of silica fibre in cable filled with water
Author :
Mitsunaga, Y. ; Kuwabara, Takuhito ; Abe, Takashi ; Ishida, Yuuki
Author_Institution :
NTT Ibaraki Electrical Communication Laboratory, Tokai, Japan
Abstract :
Evaluation of molecular hydrogen diffusion into silica fibre, which causes a loss increase at 1.24 ¿m wavelength, and the accumulation mechanism for hydrogen in cable are reported. It has been found that loss increase around 1.24 ¿m wavelength due to hydrogen greatly depends on the ambient hydrogen pressure. The hydrogen pressure in LAP sheath cable easily increases due to metal corrosion and the sealing effect of the sheath.
Keywords :
hydrogen; losses; optical communication equipment; optical fibres; silicon compounds; 1.24 microns wavelength; H2 diffusion; LAP sheath cable; SiO2 fibre; accumulation mechanism; ambient H2 pressure; loss increase; metal corrosion; sealing effect;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840053
