Title :
Dynamic gain equalization in two-stage fiber amplifiers
Author :
Giles, C.R. ; Di Giovanni, D.J.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
Abstract :
Relative gain differences among channels in WDM-amplified lightwave systems can be corrected in two-stage fiber amplifiers having complementary gain spectra in each stage. With two channels spaced by 2.5 nm, relative gain corrections of 1 dB were demonstrated. Simulations show that this method can be used to dynamically equalize the channel gain in long-distance transmission systems.<>
Keywords :
fibre lasers; frequency division multiplexing; optical communication equipment; WDM-amplified lightwave systems; channel gain; complementary gain spectra; dynamic gain equalisation; gain corrections; long-distance transmission systems; two-stage fiber amplifiers; Doped fiber amplifiers; Optical amplifiers; Optical fiber amplifiers; Optical fiber devices; Optical fiber polarization; Optical fiber testing; Optical filters; Optical pumping; Repeaters; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
