Theoretical and experimental study of 10 Gb/s transmission performance using 1.55 mu m LiNbO3-based transmitters with adjustable extinction ratio andchirp

This paper has experimentally and theoretically investigated transmission p erformance depending on chirping and extinction ratio for a 10 Gb/s transmi ssion system with the standard single-mode fiber. The transmission performa nce can be dramatically degraded or improved by adjusting chirp and extinct ion ratio in a 1.55 mu m LiNbO3 modulator-based transmitter and erbium-dope d fiber amplifier (EDFA)-pin diode receiver configuration. To estimate the transmission performance, bit error rate (BER) characteristics rather than eye-opening penalty (EOP) have been calculated by solving the nonlinear Sch rodinger equation with including the model of chirping and extinction ratio for the transmitter, and noise and intersymbol interference for the receiv er. This simulation can predict the measured BER characteristics well enoug h to see interplaying between chirping and extinction ratio.