The effect of pump wavelength, power and direction on gain and noise figure in double-pass/stage TDFAs

YÜCEL M., Dincer A.

Optoelectronics and Advanced Materials, Rapid Communications, vol.17, no.7-8, pp.301-310, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 17 Issue: 7-8
  • Publication Date: 2023
  • Journal Name: Optoelectronics and Advanced Materials, Rapid Communications
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex
  • Page Numbers: pp.301-310
  • Keywords: Backward pumping, Bidirectional pumping, Double-pass, Forward pumping, Thulium-doped fiber amplifier
  • Gazi University Affiliated: Yes


The effects of pump laser wavelength, power, and direction on optical gain and noise figures in double pass/stage TDFA setups were investigated. For this purpose, four different setups with different pumping types are presented comparatively along the S-band. TDF lengths have been optimized and setups are aimed to be similar. By comparing the pumps with wavelengths of 800, 1050, 1400, and 1560 nm, which are widely used in the literature, the most efficient pump wavelength was determined. The effect of pump direction was investigated by using forward, backward, and bidirectional pumping methods. Then, the setups were compared and the pump power and pumping method were determined with the most efficient wavelength. Finally, the PCE values of all designs were examined and compared.