Asynchronous Sampling for Q-Factor Estimation Using Sampling Pulse with Wide Pulsewidth

Zhihong Li, Chao Lu, Yi Dong, Yixin Wang, Tee Hiang Cheng, Fu Ming Yue

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)1749-1751
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number12
Publication statusPublished - 1 Dec 2003
Externally publishedYes


  • Asynchronous sampling
  • Broad pulse sampling
  • Optical performance monitoring
  • Q-factor estimation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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