SYSTEM AND METHOD FOR RAPIDLY ACHIEVING OPTIMUM DISPERSION IN OPTICAL TRANSMISSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a system and method for optimizing dispersion in an optical transmission line.

SOLUTION: The system and method include measuring the amplitude of a d.c. voltage component of a synchronously demodulated data signal of at least one wavelength channel by an in-phase carrier at the baud frequency of the wavelength channel. In an alternative embodiment, the system and method include measuring the IF amplitude of the synthetic a.c. signal of a data signal of at least one wavelength channel comprising a received RZ signal mixed in a local oscillator, whose frequency differs from the wavelength channel baud by a relatively small amount, somewhere on the order of about 100 kHz.

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