[15] S. Xu, Z. Yang, Z. Feng, Q. Zhang, Z. Jiang, W. Xu. Gain and noise characteristics of single-mode Er3+/Yb3+ co-doped phosphate glass fibers. 2nd IEEE International Nanoelectronics Conference (INEC), 633-635(2008).
[26] Q. Wang, N. K. Dutta. Er-Yb doped double clad fiber amplifier. Proc. SPIE, 5246, 208-215(2003).