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Translated title of the contribution: Effect of Bonding Ratio of Erbium-doped Nanocrystals to Polymers on Gain Properties of Optical Waveguide Amplifier

Ying Tang, Jun Li, Yuewu Fu, Dan Zhao, Weiping Qin

Research output: Contribution to journalArticlepeer-review

Abstract

The nanocomposite, which is synthesized by copolymerizing erbium-doped nanocrystals and methyl methacrylate (MMA) monomer, can be used as the gain media to fabricate a polymer-based optical waveguide amplifier. The gain performance of this type device is closely related to the concentration of nanocrystals in the nanocom - posite. In this paper, the uniform β-NaLu50%Y30%F4:18%Yb3+, 2%Er3+ nanocrystals were successfully synthesized by the thermal decomposition method. The nanocrystals were about 16 nm and modified with unsaturated ligands on their surfaces. Therefore, the nanocrystals could be copolymerized with MMA to form nanoparticles-polymethyl methacrylate (NPs-PMMA) nanocomposite. Three groups of nanocomposites with different bonding ratios were prepared by adjusting the doping concentrations of nanoparticles to 0. 1, 0. 15, 0. 25 mmol, respectively. The down-conversion emission and transmission spectra showed that with the increase of the bonding nanocrystal concentration, the luminescence intensity of the nanocomposites increased gradually, but the light transmittance in the near infrared region decreased slightly. A series of embedded waveguide amplifiers were fabricated based on these three nanocom - posites. At 1 550 nm, the relative gains of these devices were 3. 00, 3. 46, 5. 61 dB, and the insertion losses were 19. 20, 25. 00, 26. 53 dB, respectively. The results showed that even the scattering loss raised with the increase of nanocrystal concentration, the luminescence intensity of the gain media still enhanced and the relative gain improved in the series of devices in the C-band. In the experiment of this paper, increasing the concentration of the nanocrystals results in an advantage of the gain improvement over the scattering loss increase.

Translated title of the contributionEffect of Bonding Ratio of Erbium-doped Nanocrystals to Polymers on Gain Properties of Optical Waveguide Amplifier
Original languageChinese (Traditional)
Pages (from-to)678-684
Number of pages7
JournalChinese Journal of Luminescence
Volume44
Issue number4
DOIs
StatePublished - Apr 2023
Externally publishedYes

Keywords

  • bonding ratio
  • composite polymer
  • erbium-doped nanocrystals
  • optical waveguide amplifier

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