Gain Characteristics of Er3+-Doped Phosphate Glass Fibres
XU Shan-Hui1, YANG Zhong-Min1, ZHANG Qin-Yuan1, DENG Zai-De1, JIANG Zhong-Hong1,2
1Key Laboratory of Special Functional Materials and Advanced Manufacturing Technology (Ministry of Education) and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510640
2Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
Gain Characteristics of Er3+-Doped Phosphate Glass Fibres
1Key Laboratory of Special Functional Materials and Advanced Manufacturing Technology (Ministry of Education) and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510640
2Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
Abstract： An erbium-doped phosphate glass fibre has been drawn by the rod-in-tube technique in our laboratory. The gain for the Er3+-doped phosphate glass fibre with different pump powers and with different input signal wavelengths is investigated. The 2.2-cm-long fibre, pumped by a single-mode 980-nm fibre-pigtailed laser diode, can provide a net gain per unit length greater than 1.8dBcm. The pump threshold is about 50mW at the wavelength of 1534nm, and below 70mW at 1550nm. The gain linewidth of the Er3+-doped phosphate glass fibre is greater than 34nm and can cover the C band in optical communication networks.
2006, Vol. 23 
