Title :
Analysis of erbium-doped fiber amplifiers pumped in the /sup 4/I/sub 15/2/-/sup 4/I/sub 13/2/ band
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
Abstract :
A theoretical model for the amplifiers predicts gain coefficients of around 2 dB per milliwatt of launched pump power, in close agreement with previously reported measurements. The model is also used to determine the optimal pump wavelength lambda /sub opt/ that maximizes the amplifier gain. It is shown that the latter is insensitive to pump detuning near lambda /sub opt/=1.48 mu m, within a 20 nm range, which indicates that broadband, multimode laser diode pump sources and pumps with narrow linewidths should yield identical gain performance.<>
Keywords :
erbium; fibre optics; laser theory; optical pumping; solid lasers; 1.48 micron; 2 dB; Er doped fiber amplifiers; broadband; gain coefficients; launched pump power; multimode laser diode pump sources; narrow linewidths; optimal pump wavelength; pump detuning; theoretical model; Broadband amplifiers; Diode lasers; Erbium-doped fiber amplifier; Gain measurement; Laser excitation; Optimized production technology; Power amplifiers; Power measurement; Predictive models; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
