Title :
Gain modulation response of erbium-doped fiber amplifiers
Author :
Freeman, J. ; Conradi, J.
Author_Institution :
TR Labs, Edmonton, Alta., Canada
Abstract :
The small-signal low frequency response characteristics of erbium-doped fiber amplifiers (EDFAs) are examined theoretically and experimentally. Modulating the pump laser results in a low-pass transfer of modulation from the pump to signals amplified in the EDFA. A signal modulated at low frequencies and amplified by an EDFA experiences a transfer function that is similar to that of a lead compensator, which has one zero followed in frequency by one pole. Experimental results verify both the magnitude and phase response of the theoretical transfer functions.<>
Keywords :
erbium; fibre lasers; frequency response; optical modulation; optical pumping; transfer functions; EDFAs; Er-doped fibre amplifiers; gain modulation response; low frequencies; phase response; pump laser modulation; small-signal low frequency response characteristics; transfer function; Absorption; Crosstalk; Equations; Erbium-doped fiber amplifier; Frequency modulation; Frequency response; Laser excitation; Optical amplifiers; Optical modulation; Steady-state;
Journal_Title :
Photonics Technology Letters, IEEE
