Unrepeatered Transmission over 300km NZDSF Using 112-Gb/s Time-Interleaved NRZ and RZ-PDM-QPSK with Coherent Detection and Forward Raman Pumping
06 March 2011
We show that time-interleaved RZ-PDM-QPSK and forward Raman pumping can increase the performance of a 112-Gb/s PDM-QPSK coherent unrepeatered transmission system over 300 km of NZDSF by more than 2 dB. © 2011 Optical Society of America OCIS codes: (060.2330) Fiber optics communications; (060.1660) Coherent communications; (060.4370) Nonlinear optics, fibers;