Title :
Crosstalk and channel spacing in a coherent multichannel system using erbium doped fibre amplifiers
Author :
Van Deventer, M. Oskar ; Koning, Oscar J.
Author_Institution :
PTT Res., R. PTT Nederland NV, Leidschendam, Netherlands
Abstract :
The influence of optical amplification with an erbium doped fibre amplifier (FDFA) on coherent multichannel (CMC) transmission is investigated experimentally. The authors found that exactly the same crosstalk/signal ratio can be tolerated in a CMC-system with and without EDFA. They observed no noise floor nor other effects caused by spectral broadening due to the fibre amplifier phase noise. The main influence of the EDFA is (homogeneous) gain saturation. For deep saturation of the EDFA an increase of the noise figure is expected. They conclude that EDFA noise and crosstalk can be considered independent additive (Gaussian) noise sources to the system noise.<>
Keywords :
crosstalk; erbium; fibre lasers; light coherence; optical communication equipment; optical fibres; optical links; random noise; telecommunication channels; EDFA; additive Gaussian noise sources; channel spacing; coherent multichannel system; crosstalk; crosstalk/signal ratio; deep saturation; erbium doped fibre amplifiers; gain saturation; homogeneous saturation; noise figure; optical amplification; phase noise; spectral broadening; system noise; Additive noise; Channel spacing; Crosstalk; Doped fiber amplifiers; Erbium; Erbium-doped fiber amplifier; Gaussian noise; Optical noise; Phase noise; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
