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Enhancement of power conversion efficiency for an L-Band EDFA with a secondary pumping effect in the unpumped EDF section

  • Juhan Lee
  • , Uh Chan Ryu
  • , Seong Joon Ahn
  • , Namkyoo Park
  • Seoul National University
  • Korea Electric Power

Research output: Contribution to journalArticlepeer-review

117 Scopus citations

Abstract

A novel structure, which utilizes detrimental back-ward amplified spontaneous emission as a secondary pump source is suggested for a silica-based fiber amplifier, operating at a wavelength range from 1570 to 1610 nm. By using the secondary pumping effect from the strong, wasted 1550-nm band amplified spontaneous emission power in the unpumped section of the erbium-doped fiber, it was possible to achieve a considerable improvement in power conversion efficiency, increasing small-signal gain by more than 4 dB. The suggested pump structure was also shown to be useful in overall conversion efficiency improvement for L-band EDFA's, regardless of pump wavelength choice.

Original languageEnglish
Pages (from-to)42-44
Number of pages3
JournalIEEE Photonics Technology Letters
Volume11
Issue number1
DOIs
StatePublished - 1999

Keywords

  • Erbium-doped fiber amplifiers (EDFA's)
  • Optical fiber communication
  • Wavelength-division-multiplexed (WDM) systems

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