Title :
Wideband, gain-flattened, erbium-doped fibre amplifiers with 3 dB bandwidths of >50 nm
Author :
Masuda, H. ; Kawai, S. ; Suzuki, K.I. ; Aida, K.
Author_Institution :
NTT Opt. Network Syst. Lab., Kanagawa, Japan
fDate :
6/5/1997 12:00:00 AM
Abstract :
3 dB bandwidth of 52 nm (1556-1608 nm) for a silicate erbium-doped fibre amplifier (EDFA) and 50 nm (1554-1604 nm) for a fluoride (EDFA) have been obtained by a novel scheme with two-stage erbium-doped fibres and an intermediate equaliser. Low noise figures and high pump efficiencies of the EDFA´s have been confirmed
Keywords :
erbium; fibre lasers; laser noise; optical pumping; 1554 to 1604 nm; 1556 to 1608 nm; bandwidth; fluoride EDFA; intermediate equaliser; noise figure; pump efficiency; silicate EDFA; two-stage erbium-doped fibre; wideband gain-flattened erbium-doped fibre amplifier;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970719
