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

doi:10.1007/s12200-012-0261-2

Front Optoelec

2012, Vol. 5

Issue (3) : 322-329 https://doi.org/10.1007/s12200-012-0261-2

RESEARCH ARTICLE

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

Hamidine MAHAMADOU¹, Xiuhua YUAN¹(

), Eljack M. SARAH², Weizheng ZOU¹

1. Wuhan National Laboratory for Optoelectronics, College of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; 2. Department of Electronics Engineering, College of Engineering, Sudan University of Science and Technology, Khartoum 11111, Sudan

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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

Corresponding Author(s): YUAN Xiuhua,Email:yuanxh@mail.hust.edu.cn

Issue Date: 05 September 2012

Cite this article:

Hamidine MAHAMADOU,Xiuhua YUAN,Eljack M. SARAH, et al. Simulation and comprehensive assessment of single channel RZ-DPSK optical link by dispersion management with channel bit rate beyond 40 Gbits/s[J]. Front Optoelec, 2012, 5(3): 322-329.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-012-0261-2
https://academic.hep.com.cn/foe/EN/Y2012/V5/I3/322

Fig.1 Pre-compensation dispersion scheme

Fig.2 Post-compensation dispersion compensation scheme

Tab.1 Fiber parameters

Fig.3 Pre/post-compensation dispersion compensation scheme

Tab.2 factor (dB) variations for the worse case and the threshold input powers to the reach of the ASE limit effects on span input power

Fig.4 factor(dB) at various span input power with noise and nonlinearities with chromatic dispersion and attenuation fully compensated at channel bit rate (a) 80 Gbits/s, (b) 100Gbits/s

Fig.5 factor (dB) at various span input power without noise with chromatic dispersion and attenuation fully compensated for each span at channel bit rate (a) 80 Gbits/s, (b) 100 Gbits/s

Fig.6 Log BER as the function of transmission distance for single channel simulation with both nonlinearities and noise (a, b); without noise (c, d) and without nonlinearities (e, f) at 80 and 100Gbits/s

Fig.7 factor vs link distance for optical filter bandwidth () equal to bit rate and twice the bit rate at 80 (a) and 100Gbits/s (b)

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