Dispersion compensation is of crucial importance in optical fiber communication systems. Various approaches have been suggested to combat the dispersive broadening of optical pulses and then increase data transmission rates. A well-known procedure consists in launching the signal at the output of a first fiber segment (characterized by its dispersion parameter P21) in a second section presenting a dispersion parameter of opposite sign. As long as the condition ß22L2=-ß21L1(L1,2 being the medium lengths) is satisfied, pulse restoration at the output of the second segment is ensured. This approah, however, is valid only in the linear regime. Spectral broadening caused by nonlinear self-phase modulation distorts the pulse and the above technique is unable to compensate for this.

© 1996 Optical Society of America

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