论文信息 - Chirped RZ-DPSK based on single Mach-Zehnder modulator and its nonlinear transmission performance

Chirped RZ-DPSK based on single Mach-Zehnder modulator and its nonlinear transmission performance

We present a detailed analysis of positively and negatively chirped return-to-zero differential phase-shift keyed (CRZ-DPSK) signals that are generated using a single Mach-Zehnder modulator at the transmitter. Supporting CRZ-DPSK experiments at 10 Gb/s showed a nominal receiver sensitivity of -42 dBm at bit-error rate =10/sup -9/. We show that an appropriate amount of chirp, depending on the dispersion map used, enhances the nonlinear tolerance of the CRZ-DPSK signal by reducing the Gordon-Mollenauer phase noise.

Y.-H. Kao | Xiang Liu | Y. Kao

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