Title :
Asynchronous sampling for Q-factor estimation using sampling pulse with wide pulsewidth
Author :
Li, Zhihong ; Lu, Chao ; Dong, Yi ; Wang, Yixin ; Cheng, Tee Hiang ; Yue, Fu Ming
Author_Institution :
Inst. for Inforcom Res., Singapore, Singapore
Abstract :
A novel method based on asynchronous sampling using sampling pulse with wide pulsewidth has been suggested for Q-factor estimation from amplitude histogram. The effectiveness of this method has been demonstrated through numerical simulation. It was found that, there exist a linear relationship between original Q value and the estimated Q factor using sample pulse with certain pulsewidth for both nonreturn-to-zero and return-to-zero signal format. This method is simple and easy to implement. It can be applied to either single channel or multi channel monitoring scheme.
Keywords :
Q-factor; asynchronous transfer mode; optical fibre communication; optical fibre losses; Q-factor estimation; amplitude histogram; asynchronous sampling; estimated Q factor; original Q value; sampling pulse; wide pulsewidth; Amplitude estimation; Bit error rate; Histograms; Monitoring; Optical filters; Optical noise; Optical pulses; Q factor; Sampling methods; Space vector pulse width modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.819731