Electronics Letters, May 10, 1990, vol. 26, No. 10, pp. 661-662. |
Olsson et al.; "Two-Stage High-Gain Optical Amplifier"; Journ. Lightwave Tech., vol 7, #5, May 1989, pp. 791-793. |
Mesuda et al; "High Gain Two Stage Amplification . . . "; Elect. Lett., vol. 26, #10, pp. 661-662, May 1, 1990. |
Giles et al; "2 GBit/ Signal Amplification . . . Amplifier"; J. Lightwave Tech., vol. 7, #4, pp. 651-656, May 1989, Abstract Supplied. |
Giles et al; "Noise Performance of Erbrium-Doped . . . "; IBEB Photonics. Tech. Lett.; vol. 1, #11, pp. 367-369, Nov. 1989, Abstract Supplied. |