Title :
The gain and optimal length in the erbium-doped fiber amplifiers with 1480 nm pumping
Author :
Lin, Min-Chuan ; Chi, Sien
Author_Institution :
Inst. of Electro-Opt. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
4/1/1992 12:00:00 AM
Abstract :
The approximate analytic expressions for the gain and optimal length of the 1480-nm-pumped erbium-doped fiber amplifier with an arbitrary dopant distribution are obtained when the saturation by amplified spontaneous emission (ASE) is neglected. Numerical calculations show that the values predicted from the analytic expressions of the maximal gain and optimal fiber length as functions of input signal and pump powers are very accurate for narrow dopant distributions confined to the center of the fiber core.<>
Keywords :
approximation theory; erbium; fibre lasers; laser theory; optical pumping; 1480 nm; Er doped fibre amplifiers; IR; amplified spontaneous emission; amplifier gain; approximate analytic expressions; arbitrary dopant distribution; core centre; fiber core; input signal; maximal gain; narrow dopant distributions; optical pumping; optical saturation; optimal fiber length; pump powers; Absorption; Equations; Erbium-doped fiber amplifier; Laser excitation; Optical fiber amplifiers; Optical fiber theory; Optical pumping; Signal analysis; Spontaneous emission; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
