Comparative analysis and power optimization for return to zero and non return to zero coded transmission in 40 Gbps fiber optics system

Author

Asif, Muhammad ; Ali, Hamza ; Rehan Afzal, H.M. ; Siddiqui, Tauseef Ahmad

Author_Institution

Sch. of Electron. & Inf., Northwestern Polytech. Univ., Xi´an, China

fYear

2014

fDate

14-16 Oct. 2014

Firstpage

1022

Lastpage

1026

Abstract

The input launch power of an optical source is a very important factor for communication engineers in designing fiber optics communication systems. By increasing the input launch power, the non linear effects like Four wave mixing (FWM), Cross phase modulation (XPM) and Self phase modulation (SFM) also affect the BER (bit error rate) by decreasing the maximum Q. factor (Quality factor). In this work a comparative analysis for RZ (return to zero) and NRZ (non return to zero) coded transmission has been shown through simulation results for 40 Gbps fiber optic system at fiber lengths (100-300) km using standard single mode fiber (SMF) in Optisystem software. It has been shown that RZ coded modulation can tolerate more distortion and reach longer transmission distance as compared to NRZ coded modulation. Also, Input launch power has been optimized for RZ and NRZ coded transmission in order to achieve more fruitful and reliable transmission.

Keywords

Q-factor; error statistics; modulation coding; nonlinear distortion; optical distortion; optical fibre communication; optical modulation; optimisation; telecommunication network reliability; BER; NRZ Coded modulation; Q factor; RZ coded modulation; SMF; bit error rate; fiber optic communication system; nonlinear effect; nonreturn to zero coded transmission; optical source input launch power; optisystem software; power optimization; quality factor; return to zero coded transmission; single mode fiber; Bit error rate; Modulation; Optical fiber communication; Optical fiber dispersion; Optical fibers; Optical signal processing; BER; DCF; Input launch power; NRZ; Power Optimization; Q. factor; RZ; SMF;

fLanguage

English

Publisher

ieee

Conference_Titel

Image and Signal Processing (CISP), 2014 7th International Congress on

Conference_Location

Dalian

Type

conf

DOI

10.1109/CISP.2014.7003929

Filename

7003929