Simulation and comprehensive assessment of single channel RZ-DPSK optical link by dispersion management with channel bit rate beyond 40 Gbits/s

Abstract

This paper studied the influence of return to zero-differential phase-shift-keying (RZ-DPSK) data format on techniques of pre-, post- and pre/post combination dispersion compensation for faithful transmission of optical signal at 80 and 100 Gbits/s channel bit rate via simulation. The purpose of this study was to find out the dispersion compensation techniques for optimal transmission with the interaction effects of self-phase modulation (SPM) and amplifier spontaneous emission (ASE) for RZ-DPSK encoded optical data. By the simulation method, it was found out that the RZ-DPSK data format can be allowed with a transmission distance of about 700 km of standard single mode fiber (SMF) at 100 Gbits/s, and it can be provided with farther transmission distance of more than 1000 km at 80 Gbits/s with the combination of the pre- and post-compensation technique. To efficiently suppress the effect of ASE and improve optical signal-to-noise ratio (OSNR), the bandwidth frequency of optical receiver filter was found to be at least equal to bit rate.

Keywords

return to zero-differential phase-shift-keying (RZ-DPSK) / dispersion compensation / self-phase modulation (SPM) / amplifier spontaneous emission (ASE) / bit rate / optical filter bandwidth

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Acknowledgement

This work was supported by the National Natural Science Foundation of China (Grant No. 61077058). The authors also acknowledge Dr. Yang at Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology for the numerous suggestions and guidance for the completion of this work.

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg