Bor-Chyuan Hwang, Shibin Jiang, Tao Luo, K. Seneschal, G. Sorbello, M. Morrell, F. Smektala, S. Honkanen, J. Lucas, N. Peyghambarian,
Performance of high-concentration Er3+-doped phosphate fiber amplifiers IEEE Photonics Technology Letters. ,vol. 13, pp. 197- 199 ,(2001) ,
10.1109/68.914319