The efficiencies and output power of Er-doped superfluorescent fibre sources of three major configurations are compared when pumped near 980 nm and operated in their optimal either pump-power independent, or insensitive mean wavelength regions for the first time. It is shown the double-pass backward source has a better performance than the others
Published in:
Electronics Letters
(Volume:33
,
Issue:
8
)
Date of Publication: 10 Apr 1997