Theoretical investigation of 8 × 10-Gb/s WDM signal transmission performance based on gain-equalized SOAs using backward Raman pumping at DCF

Sub Hur, Jeongyun Ko, Inkyu Lee, Young Sik Kim, Jichai Jeong

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1 Citation (Scopus)


We have theoretically investigated 8 × 10-Gb/s wavelength-division multiplexing (WDM) signal transmission characteristics based on semiconductor optical amplifiers (SOAs) with equalized gain using discrete Raman amplification (DRA). Gain equalization and low noise figures have been obtained by adjusting the backward Raman pumping power and wavelength at a dispersion compensating fiber (DCF) for each span. Bit-error-rate characteristics were calculated for 8 × 10-Gb/s WDM signal transmission over 6 × 40-km single-mode fiber (SMF) + DCF links with gain-equalized SOAs using DRAs at DCF. Approximately a 2.5-dB improvement of the receiver sensitivity was achieved by using SOAs and DRAs with optimized Raman pumping. One can easily upgrade the transmission length of a link based on SOAs with an appropriate backward pump laser at each DCF.

Original languageEnglish
Pages (from-to)1499-1503
Number of pages5
JournalJournal of Lightwave Technology
Issue number6
Publication statusPublished - 2003 Jun 1



  • Optical communication
  • Raman amplifier
  • Semiconductor optical amplifier (SOA)
  • Wavelength-division multiplexing (WDM)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

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