Title :
Improvement in Q with low frequency polarization modulation on transoceanic EDFA link
Author_Institution :
BNR Europe Ltd., Harlow, UK
fDate :
7/1/1994 12:00:00 AM
Abstract :
While polarization scrambling increases the Q seen over ultralong EDFA links, the improvement is limited by the generation of amplitude ripple, which acts to reduce the mean and increase the fluctuations in Q. It is shown that by choosing a frequency close to the erbium dynamic gain response cutoff, the AM is suppressed and a better Q improvement is obtained. This approach yielded a 1.7 dB increase in mean Q on a 6300 km system, with a significant reduction in the standard deviation of the Q variations.<>
Keywords :
Q-factor; light polarisation; optical cables; optical fibres; optical hole burning; optical links; optical modulation; submarine cables; 6300 km; Q; amplitude ripple; erbium dynamic gain response cutoff; fluctuations; low frequency polarization modulation; polarization scrambling; transoceanic EDFA link; Amplitude modulation; Cutoff frequency; Erbium; Erbium-doped fiber amplifier; Fluctuations; Frequency modulation; Harmonic analysis; Optical polarization; Page description languages; Pulse modulation;
Journal_Title :
Photonics Technology Letters, IEEE
