Title :
Transmission penalties due to EDFA gain transients in add-drop multiplexed WDM networks
Author :
Hayee, M.I. ; Willner, A.E.
Author_Institution :
Tyco Submarine Syst., Eatontown, NJ, USA
fDate :
7/1/1999 12:00:00 AM
Abstract :
We analyze fiber transmission penalties due to erbium-doped fiber amplifier (EDFA) gain transients in a chain of 10-20 EDFA´s with as many as 32 wavelength-division-multiplexed channels. Penalties are a result of increased fiber nonlinearity during channel deletion and amplified-spontaneous-emission noise during channel addition. We find that: (1) the system performance is severely degraded both in single-mode fiber and dispersion shifted fiber due to fiber nonlinearities; (2) the signal-to-noise ratio (SNR) can be reduced by up to 8 dB in a 32-channel system; and (3) a control channel to suppress EDFA-gain and SNR transients may impose an additional penalty which increases with the bit rate.
Keywords :
erbium; nonlinear optics; optical fibre amplifiers; optical fibre dispersion; optical noise; transients; wavelength division multiplexing; 32-channel system; EDFA gain transients; EDFA-gain; Er-doped fiber amplifier gain transients; SNR transients; add-drop multiplexed WDM networks; additional penalty; amplified-spontaneous-emission noise; bit rate; channel addition; channel deletion; control channel; dispersion shifted fiber; fiber nonlinearities; fiber nonlinearity; fiber transmission penalties; severely degraded; signal-to-noise ratio; single-mode fiber; system performance; transmission penalties; wavelength-division-multiplexed channels; Bit rate; Degradation; Erbium-doped fiber amplifier; Intelligent networks; Optical receivers; Signal to noise ratio; System performance; Transient analysis; WDM networks; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
