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Dynamic gain equalization in two-stage fiber amplifiers

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2 Author(s)
Giles, C.R. ; AT&T Bell Lab., Holmdel, NJ, USA ; Di Giovanni, D.J.

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.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:2 ,  Issue: 12 )