Title :
Design considerations for an Er3+-doped fiber amplifier
Author :
Ohashi, Masaharu
Author_Institution :
NTT Transmission Syst. Lab., Ibaraki, Japan
fDate :
9/1/1991 12:00:00 AM
Abstract :
The relation between the parameters of an Er3+-doped fiber and signal gain for optical fiber amplifiers pumped at 1.48 μm is theoretically investigated using the rate equation for a three-level laser system and Gaussian beam approximation for the guided wave. It is shown that the signal gain is improved by decreasing the Er3+-doped radius. For a step-index fiber, the optimum cutoff wavelength for maximizing the signal gain is found to be 0.8 μ regardless of relative-index difference when the core area radius is filled with Er3+ ions
Keywords :
erbium; fibre lasers; laser theory; 1.48 micron; Er3+-doped fiber amplifier; Gaussian beam approximation; core area radius; cutoff wavelength; design; rate equation; signal gain; step-index fiber; three-level laser system; Absorption; Equations; Erbium; Frequency; Optical attenuators; Optical fiber amplifiers; Optical propagation; Optical pumping; Steady-state; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
