114 Gbit/s soliton train generation through Raman self‐scattering of a dual frequency beat signal in dispersion decreasing optical fiber

We report the generation of 114 Gbit/s trains of 250 fs fundamental solitons. The pulses are generated due to the conversion of an intense optical beat signal (generated from two DFB laser diodes and an erbium doped fiber amplifier combination) into a soliton train due to nonlinear propagation in a 1.6 km fiber of steadily decreasing dispersion. The train repetition rate corresponds to the beat frequency of the input signal and was readily tunable between 80 and 120 GHz. The results of a computer simulation of the system are found to be in good qualitative agreement with the experimental observations.

[1]  A. Hasegawa,et al.  Generation of a train of soliton pulses by induced modulational instability in optical fibers. , 1984, Optics letters.

[2]  Akira Hasegawa,et al.  Generation of subpicosecond solitonlike optical pulses at 0.3 THz repetition rate by induced modulational instability , 1986 .

[3]  J. Gordon,et al.  Theory of the soliton self-frequency shift. , 1986, Optics letters.

[4]  L. Mollenauer,et al.  Discovery of the soliton self-frequency shift. , 1986, Optics letters.

[5]  Heinz P. Weber,et al.  Ultrashort pulse propagation, pulse breakup, and fundamental soliton formation in a single-mode optical fiber , 1987 .

[6]  E. Dianov,et al.  Stimulated Raman self-scattering of laser pulses , 1989 .

[7]  Hermann A. Haus,et al.  Raman response function of silica-core fibers , 1989, Annual Meeting Optical Society of America.

[8]  E M Dianov,et al.  Generation of a high-repetition-rate train of practically noninteracting solitons by using the induced modulational instability and Raman self-scattering effects. , 1990, Optics letters.

[9]  V. A. Semenov,et al.  A single-mode fiber with chromatic dispersion varying along the length , 1991 .

[10]  E. M. Dianov,et al.  Generation of fundamental soliton trains for high-bit-rate optical fiber communication lines , 1991 .

[11]  E. M. Dianov,et al.  Generation of soliton pulse train in optical fibre using two CW singlemode diode lasers , 1992 .

[12]  70 Gbit/s fibre based source of fundamental solitons at 1550 nm , 1992 .