Journal of Materials Research

Articles

Dy3+-doped Selenide Glasses for 1.3-μm Optical Fiber Amplifiers

Zhiyong Yanga1 c1, Wei Chena2 and Lan Luoa2

a1 Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China; and Graduate School of the Chinese Academy of Sciences, Beijing 100039, People’s Republic of China

a2 Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China

Abstract

The GexGa5Se(95−x) glasses, where x = 20, 22.5, 25, 27.5, 29.17, 30, 32.5, and 35, all doped with 0.05 mol% Dy3+ were prepared and studied. Thermal stabilities, optical properties, and 1.3 μm emission properties of the glasses were investigated. Strong fluorescence centered at 1.34 μm with a bandwidth of 92 nm was observed. Three phenomenological intensity parameters were obtained: Ω2 =12.64 × 10−20, Ω4 =2.94 × 10−20, and Ω6 =1.48 × 10−20 cm2 by Judd–Ofelt analysis. A new method estimating lifetime of overlapping energy level was introduced. Lifetimes of 520 μs were measured for the 1.3 μm transition, and the quantum efficiency was 36.8% according to the new method.

(Received January 15 2005)

(Accepted June 29 2005)

Key Words:

  • Glass;
  • Luminescence;
  • Optical spectroscopy

Correspondence:

c1 Address all correspondence to this author. e-mail: yangzhiyong@mail.sic.ac.cn

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