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    Analysis of the carrier suppressed single sideband modulation for long distance optical communication systems

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    Authors
    Paloi, Fadil
    Haxha, Shyqyri
    Affiliation
    University of Bedfordshire
    Royal Holloway, University of London
    Issue Date
    2018-02-12
    Subjects
    single sideband modulation
    fibre optics communications
    radio over fibre
    carrier suppression
    single mode fibre
    G420 Networks and Communications
    
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    Abstract
    In this research paper, we report on a simulation study of the Radio over Fibre (RoF) Carrier Suppressed Single Sideband (CS-SSB) modulation scheme. This scheme is based on a Dual Parallel Dual Drive Mach-Zehnder modulator (DP-DDMZM), for a long-distance transmission. The proposed system consists of the combination of a carrier and a message signal at two parallel modulators, where the laser and link power is varied for the two different dispersion compensation techniques. We found that by suppressing the optical carrier and cancelling one sideband, we can limit the nonlinear effects that are caused by power fading and interference. We demonstrate that by varying the launched laser and link power up to optimised threshold levels, the signal to noise ratio (SNR) increases and the Q-Factor improves significantly. Our proposed RoF optic communication architecture can support an extended reach transmission of up to 200 km without dispersion compensation. Moreover, for the bitrate of 10 Gbit/s and span length of 25 km, we achieved a span ratio of 520, alternatively viewed as the system link signal transmission distance of 13,000 km. Therefore, this method is cost-effective and less complex.
    Citation
    Paloi F, Haxha S (2018) 'Analysis of the carrier suppressed single sideband modulation for long distance optical communication systems', Optik, 161 (), pp.230-243.
    Publisher
    Elsevier GmbH
    Journal
    Optik
    URI
    http://hdl.handle.net/10547/623834
    DOI
    10.1016/j.ijleo.2018.02.007
    Additional Links
    https://www.sciencedirect.com/science/article/pii/S0030402618301633
    Type
    Article
    Language
    en
    ISSN
    0030-4026
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.ijleo.2018.02.007
    Scopus Count
    Collections
    Computing

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