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Nonlinearity and in-line residual dispersion tolerance of /spl pi/-AP-RZ and CS-RZ modulation formats in 40-Gb/s transmission over standard single-mode fiber

By: Mikhailov, V.; Appathurai, S.; Bayvel, P.; Killey, R.I.;

2005 / IEEE

Description

This item was taken from the IEEE Periodical ' Nonlinearity and in-line residual dispersion tolerance of /spl pi/-AP-RZ and CS-RZ modulation formats in 40-Gb/s transmission over standard single-mode fiber ' We achieved a 40% increase in 40-Gb/s transmission distance in links with exact dispersion compensation through suppression of nonlinear distortion by using the alternate-phase return-to-zero (AP-RZ) modulation format. A novel experimental technique was used to compare in-line residual dispersion tolerances, and it was found that AP-RZ is less dispersion tolerant than conventional RZ and carrier-suppressed RZ (CS-RZ) when both linear and nonlinear transmission are considered. Maximum dispersion tolerance of /spl plusmn/50 ps/nm over 300 km was shown to be possible using CS-RZ.