9000 km, 5 Gb/s NRZ Transmission Experiment Using 274 Erbium-Doped Fiber-Amplifiers
Neal S. Bergano, C. R. Davidson, G. M. Homsey, D. J. Kalmus, P. R. Trischitta, J. Aspell, D. A. Gray, R. L. Maybach, S. Yamamoto, H. Taga, N. Edagawa, Y. Yoshida, Y. Horiuchi, T. Kawazawa, Y. Namihira, and S. Akiba
PD11 Optical Amplifiers and Their Applications (OAA) 1992 View: PDF