Title :
Excited-state absorption and gain in erbium-fiber amplifiers between 1.05 and 1.35 mu m
Author_Institution :
Plessey Res. Caswell Ltd., Towcester, UK
fDate :
7/1/1991 12:00:00 AM
Abstract :
Measurements of the transmission of an erbium-doped fiber amplifier in the wavelength range 1.05-1.35 mu m are reported. Excited-state absorption at 1.14 mu m and gain at 1.24 mu m are observed when the amplifier is pumped at 528 nm. There is good agreement between the measured excited-state absorption and gain and that predicted from the energy bands. An excited state absorption between 1.5 and 1.75 mu m is predicted from absorption measurements.<>
Keywords :
erbium; fibre lasers; light absorption; optical pumping; 1.05 to 1.35 micron; 1.14 micron; 1.24 micron; 1.5 to 1.75 micron; 528 nm; absorption measurements; energy bands; erbium-doped fiber amplifier; excited-state absorption; laser gain; laser pumping; metastable states; Absorption; Doped fiber amplifiers; Erbium; Erbium-doped fiber amplifier; Optical amplifiers; Optical fiber amplifiers; Optical fiber losses; Optical fibers; Propagation losses; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
