Title :
Transient gain control in EDFA´s by dual-cavity optical automatic gain control
Author :
Liu, Yongqian ; Krol, Mark F.
Author_Institution :
Corning Inc., NY, USA
Abstract :
We report a novel method for automatic gain control of optical amplifiers: dual-cavity optical automatic gain control. The method exploits inhomogeneous broadening in erbium-doped fibers to clamp the erbium gain spectrum with two oscillating lasers. The technique significantly reduces surviving channel steady-state and transient power excursions by automatic reduction of relaxation oscillations and spectral hole burning.
Keywords :
automatic gain control; erbium; laser cavity resonators; optical fibre amplifiers; optical fibre networks; optical hole burning; telecommunication network reliability; transients; wavelength division multiplexing; EDFA; dual-cavity optical automatic gain control; erbium gain spectrum; erbium-doped fibers; inhomogeneous broadening; oscillating lasers; relaxation oscillations; spectral hole burning; surviving channel steady-state power excursions; surviving channel transient power excursions; transient gain control; Erbium-doped fiber amplifier; Gain control; Optical control; Optical crosstalk; Optical feedback; Optical fiber networks; Optical saturation; Optical sensors; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
