Comparative analysis of BER estimation methods in numerical simulation of 40-Gb/s RZ-DPSK transmission with in-line SOAs

Brendan Slater*, Sonia Boscolo, Vladimir K. Mezentsev, Sergei K. Turitsyn

*Corresponding author for this work

Research output: Contribution to journalArticle


Applying direct error counting, we compare the accuracy and evaluate the validity of different available numerical approaches to the estimation of the bit-error rate (BER) in 40-Gb/s return-to-zero differential phase-shift-keying transmission. As a particular example, we consider a system with in-line semiconductor optical amplifiers. We demonstrate that none of the existing models has an absolute superiority over the others. We also reveal the impact of the duty cycle on the accuracy of the BER estimates through the differently introduced Q-factors. © 2007 IEEE.

Original languageEnglish
Pages (from-to)607-609
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number8
Publication statusPublished - 15 Apr 2007



  • direct error counting
  • numerical methods for bit-error-rate (BER) estimation
  • return-to-zero differential phase-shift keying (RZ-DPSK)

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