ETRI Journal

  • 제23권3호
  • /
  • Pages.97-105
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  • 2001
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  • 1225-6463(pISSN)
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  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
권호 표지

$Pr^{3+}-and$ $Pr^{3+}/Er^{3+}$-Doped Selenide Glasses for Potential $1.6{\mu}m$ Optical Amplifier Materials

  • Choi, Yong-Gyu (Telecommunication Basic Research Laboratory, Electronics and Telecommunications Research Institute) ;
  • Park, Bong-Je (Telecommunication Basic Research Laboratory, Electronics and Telecommunications Research Institute) ;
  • Kim, Kyong-Hon (Telecommunication Basic Research Laboratory, Electronics and Telecommunications Research Institute) ;
  • Heo, Jong (Department of Materials Science and Engineering, Pohang University of Science and Technology)
  • 투고 : 2000.09.15
  • 발행 : 2001.09.30
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초록

$1.6\;{\mu}m$ emission originated from $Pr^{3+}:\;(^3F_3,\;^3F_4)\;{\longrightarrow}\;^3H_4$ transition in $Pr^{3+}-\;and\;Pr^{3+}/Er^{3+}$-doped selenide glasses was investigated under an optical pump of a conventional 1480 nm laser diode. The measured peak wavelength and fullwidth at half-maximum of the fluorescent emission are ~1650nm and 120nm, respectively. A moderate lifetime of the thermally coupled upper manifolds of ${\sim}212{\pm}10{\mu}s$ together with a high stimulated emission cross-section of ${\sim}(3{\pm}1){\times}10^{-20}\;cm^2$ promises to be useful for $1.6{\mu}m$ band fiber-optic amplifiers that can be pumped with an existing high-power 1480 nm laser diode. Codoping $Er^{3+}$ enhances the emission intensity by way of a nonradiative $Er^{3+}:\;^4I_{13/2}\;{\longrightarrow}\;Pr^{3+}:\;(^3F_3,\;^3F_4)$ energy transfer. The Dexter model based on the spectral overlap between donor emission and acceptor absorption describes well the energy transfer from $Er^{3+}$ to $Pr^{3+}$ in these glasses. Also discussed in this paper are major transmission loss mechanisms of a selenide glass optical fiber.

키워드

참고문헌

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