Title :
¿-ray irradiation effect on transmission loss for ZrF4-based optical fibres
Author :
Ohishi, Yasutake ; Mitachi, Seiko ; Takahashi, Satoshi ; Miyashita, Tadakazu
Author_Institution :
NTT Ibaraki Electrical Communication Laboratory, Tokai, Japan
Abstract :
The ¿-ray irradiation effect on the transmission loss of ZrF4-BAF2-GdF3-AlF3 and ZrF4-BaF2-GdF3-AlF3-PbF2 optical fibres is investigated. Absorption bands are induced in the ultraviolet to near infrared region, and their tails increase the transmission losses in the mid-infrared region. Induced transmission losses for a dose of 106 R are 1000¿2300 dB/km in the 2¿4 ¿m band. These values are comparable to those at 1.5 ¿m for doped silica fibres.
Keywords :
aluminium compounds; barium compounds; gadolinium compounds; gamma-ray effects; lead compounds; light transmission; losses; optical fibres; optical properties of substances; zirconium compounds; 2 to 4 micron band; ZrF4-BaF2-GdF3-AlF3; ZrF4-BaF2-GdF3-AlF3 -PbF2; absorption bands; gamma-ray irradiation effect; optical fibres; optical properties; transmission loss;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830565
