Effect of modulation technique in Mach-Zehnder Modulator (MZM) in optical OFDM system

Muhammad Towfiqur , Rahman and Abdullah, Khaizuran and Islam, Md. Rafiqul (2014) Effect of modulation technique in Mach-Zehnder Modulator (MZM) in optical OFDM system. International Journal of Computer Networks and Wireless Communications (IJCNWC), 4 (4). pp. 257-263. ISSN 2250 - 3501 (Online), 2277 - 5307 (Print)

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Abstract

This paper highlights the bit error rate (BER) performance of a radio-over-fiber system utilizing binary phase shift keying (BPSK), M-QAM, QPSK in the external modulator which is the Mach-Zehnder modulator (MZM). The results have been obtained from the RoF link over 8, 30, 60 90 and 120 km distance to study the effect of nonlinear dispersion and attenuation of signal and compare the results other modulation. Furthermore, the chromatic dispersion has no effect on MZM whereas it has distinct effect on OOK modulation scheme without optical dispersion compensation, the performances of different modulation schemes such as OOK, PPM and PAM are analyzed. Comparisons of transmission distance, transmission capacity, bandwidth efficiency in coherent optical orthogonal frequency division multiplexing (CO-OFDM) system are included. Simulation results are given using Matlab, Simulink and Optisystem software. The results also show the importance of upconverter to reduce the nonlinearity effect in the transmission channel.

Item Type:	Article (Journal)
Additional Information:	3407/39082
Uncontrolled Keywords:	Optical orthogonal frequency division multiplexing (O-OFDM), MZM, Modulation, Nonlinearity, Radio over fiber Introduction
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication. Including telegraphy, radio, radar, television
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering
Depositing User:	Dr. Md. Rafiqul Islam
Date Deposited:	12 Nov 2014 15:53
Last Modified:	19 Jun 2018 12:15
URI:	http://irep.iium.edu.my/id/eprint/39082

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