4 GB/S SOLITON DATA-TRANSMISSION OVER 136 KM USING ERBIUM DOPED FIBER AMPLIFIERS

Using semiconductor laser pumped erbium doped fiber amplifiers and an externally modulated modelocked external cavity semiconductor laser, soliton data transmission at 4 Gb/s over 136 km of nondispersion shifted fiber was demonstrated. After 136 km of transmission and at low pulse powers, the ∼80 ps fiber input pulse width was broadened to ∼150 ps. At high pulse powers, the output pulse width was maintained at 80 ps as expected for N = 1 solitons. N = 3 solitons were also observed at lower data rates. © 1990 IEEE