Tunable pulse-width management is one of the efficient methods to enhance the robustness of return-to-zero (RZ) data formats for long-haul transmission systems. We demonstrate both single channel and 4 x 10-Gb/s wavelength-division-multiplexed performance optimization using tunable pulse-width management. Pure RZ single with tunable pulse-width is generated by changing the driving voltages on a phase modulator and the dispersion values of a tunable dispersion element simultaneously according to our simulation results. Varying the pulse width from 50 to 10 ps at the transmitter can almost double the transmission distance with 4% variation in the residual link dispersion.
© 2005 IEEE
L.-S. Yan, S. M. R. Motaghian Nezam, A. B. Sahin, J. E. McGeehan, T. Luo, Q. Yu, and Alan E. Willner, "Performance Optimization of RZ Data Format in WDM Systems Using Tunable Pulse-Width Management at the Transmitter," J. Lightwave Technol. 23, 1063- (2005)