Gain equalization by mitigating self-filtering effect in a chain ofcascaded EDFA's for WDM transmissions |
| |
Authors: | Jinghui Li Khaleghi F. Kavehrad M. |
| |
Affiliation: | Dept. of Electr. Eng., Ottawa Univ., Ont.; |
| |
Abstract: | A simple method of alternatively using high-inversion and moderate-inversion erbium-doped fiber amplifiers (EDFA's) in an optical amplifier chain is presented to mitigate the self-filtering effect and equalize both signal power and signal-to-noise ratio (SNR) of multiple wavelength channels in wavelength-division multiplexing (WDM) transmission systems. The performance of the compensated system with alternatively used high- and moderate-inversion amplifiers is compared with the uncompensated ones where only moderate- or high-inversion amplifiers are employed. The result shows that the compensated system has a flatter gain profile, a lesser signal power spread, and SNR degradation |
| |
Keywords: | |
|
|