Two-Stage High-Gain Optical Amplifier.
01 January 1989
A two-stage semiconductor optical amplifier is demonstrated. Net fiber-to-fiber gains as high as 36.5 dB have been achieved. When used in a fiber-optic transmission system, using a commercial AT&T FTSsG 1.7 GBit/s regenerator, the fiber span between transmitter and regenerator is increased to 151km at 1.3microns wavelength. With a 1.55microns two-stage amplifier, a transmission distance of 180 km at 3.4 GBit/s is demonstrated.