Title :
Accurate Q-factor estimation of optically amplified systems in the presence of waveform distortions
Author :
Norimatsu, Seiji ; Maruoka, Masanori
Author_Institution :
Graduate Sch. of Inf., Kyoto, Japan
fDate :
1/1/2002 12:00:00 AM
Abstract :
We present an accurate method for the Q-factor estimation even in the presence of waveform distortions in optically amplified systems. The method stands on the assumption that the dominant noises over the bit error rate (BER) are those superimposed on the nearest rails to the decision level. It is clarified that the assumption is usually satisfied. The results also show that, in numerical system evaluation, we should evaluate not only the eye opening but also the probability of occurrence of the rail level
Keywords :
Q-factor; error statistics; laser theory; nonlinear distortion; optical fibre communication; optical noise; BER; Gaussian noise; Q measurement; Q-factor estimation; bit error rate; decision level; dominant noises; eye opening; numerical system evaluation; optical fiber communication; optical noise; optically amplified systems; rail level occurrence probability; superimposed noise; waveform distortions; Bit error rate; Distortion measurement; Noise level; Optical crosstalk; Optical distortion; Optical noise; Q factor; Rails; Stimulated emission; Time measurement;
Journal_Title :
Lightwave Technology, Journal of
