IEEE Photonics Journal (Jan 2023)

Enhanced Gain Characteristics of PbS-Doped Silica Fiber in O-Band by Co-Doping Er Ions

  • Xiuxiu Chen,
  • Yanhua Dong,
  • Jianxiang Wen,
  • Hongyu Liu,
  • Weizhu Ji,
  • Xiangping Pan,
  • Yanhua Luo,
  • Tingyun Wang

DOI
https://doi.org/10.1109/JPHOT.2023.3282027
Journal volume & issue
Vol. 15, no. 3
pp. 1 – 7

Abstract

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We report a novel PbS/Er co-doped silica fiber (PEDF) with improved spectral properties in O-band (1260–1360 nm). The results show that the gain of the PEDF exceeds 15 dB in the range of 1150–1360 nm. Compared to PbS-doped silica fiber, the PEDF has a gain improvement of 6.4–10.9 dB in O-band. In addition, the concentration of Pb and S in the PEDF core is significantly higher, and the size distribution of PbS nanoparticles is more concentrated in a narrow range. These factors may account for the enhanced gain characteristics of the PEDF. This work reveals the positive effect of co-doping Er3+ ions on the gain characteristics of the PEDF in O-band, and suggests an important research direction for the design of broadband amplifiers and light sources for optical communication with zero dispersion.

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