Performance comparison of a fiber optic communication system based on optical OFDM and an optical OFDM-MIMO with Alamouti code by using numerical simulations

C. M. Serpa-Imbett, J. Marín-Alfonso, C. Gómez-Santamaría, L. Betancur-Agudelo, F. Amaya-Fernández

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Space division multiplexing in multicore fibers is one of the most promise technologies in order to support transmissions of next-generation peta-to-exaflop-scale supercomputers and mega data centers, owing to advantages in terms of costs and space saving of the new optical fibers with multiple cores. Additionally, multicore fibers allow photonic signal processing in optical communication systems, taking advantage of the mode coupling phenomena. In this work, we numerically have simulated an optical MIMO-OFDM (multiple-input multiple-output orthogonal frequency division multiplexing) by using the coded Alamouti to be transmitted through a twin-core fiber with low coupling. Furthermore, an optical OFDM is transmitted through a core of a singlemode fiber, using pilot-aided channel estimation. We compare the transmission performance in the twin-core fiber and in the singlemode fiber taking into account numerical results of the bit-error rate, considering linear propagation, and Gaussian noise through an optical fiber link. We carry out an optical fiber transmission of OFDM frames using 8 PSK and 16 QAM, with bit rates values of 130 Gb/s and 170 Gb/s, respectively. We obtain a penalty around 4 dB for the 8 PSK transmissions, after 100 km of linear fiber optic propagation for both singlemode and twin core fiber. We obtain a penalty around 6 dB for the 16 QAM transmissions, with linear propagation after 100 km of optical fiber. The transmission in a two-core fiber by using Alamouti coded OFDM-MIMO exhibits a better performance, offering a good alternative in the mitigation of fiber impairments, allowing to expand Alamouti coded in multichannel systems spatially multiplexed in multicore fibers.

    Original languageEnglish
    Title of host publication2013 International Conference on Optical Instruments and Technology
    Subtitle of host publicationOptoelectronic Devices and Optical Signal Processing
    PublisherSPIE
    ISBN (Print)9780819499615
    DOIs
    StatePublished - 2013
    Event2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing - Beijing, China
    Duration: 17 Nov 201319 Nov 2013

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    Volume9043
    ISSN (Print)0277-786X
    ISSN (Electronic)1996-756X

    Conference

    Conference2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing
    Country/TerritoryChina
    CityBeijing
    Period17/11/1319/11/13

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