Effects of in-band crosstalk in wavelength-locked Fabry-Pérot laser-diode-based WDM PONs

Chul Han Kim, Kwanil Lee, Sang Bae Lee

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


We investigated the impact of in-band crosstalk on the system's performance in wavelength-locked Fabry-Pérot laser-diode (FP-LD)-based wavelength-division-multiplexed passive optical networks (WDM PONs). As expected, wavelength-locked FP-LD, which was injected by using an incoherent broadband light source, was more tolerant to in-band crosstalk than distributed-feedback (DFB) laser diode. A 1-dB power penalty in the wavelength-locked FP-LD-based PON system was observed when the crosstalk-to-signal ratio was ∼ - 9 dB. We also compared the measured power penalties with the calculated power penalties. It has been shown that the in-band crosstalk-induced power penalty in wavelength-locked FP-LD-based WDM PON could be estimated properly by taking into account both effects of power addition and signal-crosstalk beat noise.

Original languageEnglish
Pages (from-to)596-598
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number9
StatePublished - 1 May 2009


  • Crosstalk
  • Fabry-Pérot laser diode (FP-LD)
  • Passive optical network (PON)
  • Wavelength-division multiplexing (WDM)


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