Title :
Noise figure characteristics of Er3+-doped fibre amplifier pumped in 0.8 mu m band
Author :
Kimura, Yuichi ; Suzuki, Kenji ; Nakazawa, Masataka
Author_Institution :
NTT Transmission Syst. Labs., Lightwave Commun. Lab., Ibaraki, Japan
Abstract :
The noise figures of a 100 m long Er3+-doped fibre amplifier pumped in the 800 nm band were investigated. Noise figures of 3.9-4.7 db were obtained at 1535 nm with input pump wavelengths of 818-824 nm, corresponding to spontaneous emission factors of 1.23-1.48. These values are similar to those obtained using a 1480 nm pump scheme. The noise figure a 1552 nm was about 4 dB and the spontaneous emission factor was 1.26.
Keywords :
erbium; fibre lasers; noise; optical fibres; optical pumping; 100 m; 1480 to 1552 nm; 3.9 to 4.7 dB; 818 to 824 nm; Er 3+-doped fibre amplifier; noise figures; pump scheme; spontaneous emission factors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910095
