Frequency detuning effects in a loop-back WDM-PON employing gain-saturated RSOAs

Wooram Lee, Seung Hyun Cho, Mahn Yong Park, Jie Hyun Lee, Chulyoung Kim, Geon Jeong, Byoung Whi Kim

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


We report that, in a loop-back wavelength-division-multiplexed passive optical network link with gain-saturated reflective semiconductor optical amplifiers, the upstream performance is strongly affected not only by the gain saturation but also by the selective spectral filtering caused by the frequency difference between the optical downstream signal and the cascaded filter's passband. We experimentally investigate these effects and propose to use an additional negatively detuned optical filter at an optical network terminal to improve the upstream transmission performance.

Original languageEnglish (US)
Pages (from-to)1436-1438
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number13
StatePublished - 2006

All Science Journal Classification (ASJC) codes

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


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