Long Reach Coherent Optical OFDM System using Multiple Mid Link Spectral Inversion Modules

Harmanjot Singh; Sukhpal Singh

doi:https://doi.org/10.14445/22315381/IJETT-V38P280

Research Article | Open Access | Download PDF

Volume 38 | Number 2 | Year 2016 | Article Id. IJETT-V38P280 | DOI : https://doi.org/10.14445/22315381/IJETT-V38P280

Long Reach Coherent Optical OFDM System using Multiple Mid Link Spectral Inversion Modules

Harmanjot Singh, Sukhpal Singh

Citation :

Harmanjot Singh, Sukhpal Singh, "Long Reach Coherent Optical OFDM System using Multiple Mid Link Spectral Inversion Modules," International Journal of Engineering Trends and Technology (IJETT), vol. 38, no. 2, pp. 436-441, 2016. Crossref, https://doi.org/10.14445/22315381/IJETT-V38P280

Abstract

CO-OFDM is a very attractive modulation and multiplexing technique that is used in wideband optical systems as well as optical wireless systems. In this paper; performance of utilizing multiple optical phase conjugate (OPC) modules in CO-OFDM system as a midlink spectrum inverter has been analyzed in order to improve the performance of system in long-haul fiber-optic channel. Firstly, performance of COOFDM system investigated at 30Gb/s, 50Gb/s and 100Gb/s which successfully transmitted over 1800Km, 1440Km and 1080 Km link length respectively without using any optical phase conjugation module. Further multiple OPC modules used in order to compensate effects of Kerr non linearities.8400Km of long distance transmission has achieved with acceptable BER limits by incorporating 6 OPC modules each after 1200Km at 30Gb/s. Results are analyzed in terms of OSNR, Q-factor for varied launched power and results revealed that system performs best at 12dB input power and effects of SPM decreased by using multiple OPC modules.

Keywords

optical phase conjugation, OSNR, error vector magnitude, self phase modulation, BER.

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