Gain enhancement in L-band loop EDFA through C-band signal injection

Altuncu A., Basgumus A.

IEEE PHOTONICS TECHNOLOGY LETTERS, vol.17, no.7, pp.1402-1404, 2005 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 17 Issue: 7
  • Publication Date: 2005
  • Doi Number: 10.1109/lpt.2005.848565
  • Journal Name: IEEE PHOTONICS TECHNOLOGY LETTERS
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.1402-1404
  • Keywords: erbium-doped fiber amplifier (EDFA), L-band loop erbium-doped fiber amplifier (L-EDFA), wavelength-division multiplexing, DOPED FIBER AMPLIFIER, WAVELENGTH, ASE

Abstract

Gain enhancement provided in L-hand erbium-doped fiber amplifier (EDFA) with loop configuration and through C-band signal injection is experimentally demonstrated and compared with conventional single-stage L-band EDFA design. Significant backward amplified spontaneous emission suppression in C-band and pump conversion efficiency increase in L-band were observed for varying C-band seed signal wavelength and power levels. Gain and noise figure (NF) performance of loop design L-EDFA is compared with the conventional bidirectionally pumped single-stage L-EDFA design. Gain and NF measurements in the loop configuration have resulted in an up to 9.5-dB increase in gain and up to 2.6-dB degradation in NF at a moderate signal wavelength of 1585 mn.