Title :
Highly efficient optical fibre amplifier pumped by a 0.8 mu m band laser diode
Author :
Horiguchi, M. ; Shimizu, Maiko ; Yamada, Makoto ; Yoshino, Kohzoh ; Hanafusa, H.
Author_Institution :
NTT Opto-electron. Labs., Ibaraki, Japan
Abstract :
A highly efficient Er-doped fibre amplifier pumped by GaAlAs laser diodes is reported. Using a low Er-cluster content fibre with a high numerical aperture, the EDFA attains 39 dB signal gain for double LD pumping and 30 dB for single LD pumping at 1.536 mu m. A maximum gain coefficient of 1.3 dB/mW was achieved at the 0.827 mu m pump band.
Keywords :
III-V semiconductors; aluminium compounds; erbium; fibre optics; gallium arsenide; optical pumping; semiconductor junction lasers; solid lasers; 1536 nm; 30 dB; 39 dB; 827 nm; Er-cluster content fibre; Er-doped fibre amplifier; GaAlAs; GaAlAs laser diodes; band laser diode; double LD pumping; gain coefficient; numerical aperture; optical fibre amplifier; pump band; single LD pumping;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19901129
