Florida Tech Logo
    • Login
    View Item 
    •   Scholarship Repository at Florida Tech
    • College of Engineering and Science
    • Theses/Dissertations
    • View Item
    •   Scholarship Repository at Florida Tech
    • College of Engineering and Science
    • Theses/Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Unified Model Combining the Boundary Conditions Encountered at the Input, the Carrier Optical Fiber and the Output in Spatially Multiplexed Optical Communication Channels

    Thumbnail
    View/Open
    Dissertation PDF (26.53Mb)
    Dissertation ZIP (181.1Mb)
    Date
    2019-04
    Author
    Lovell, Gregory Lewis
    Metadata
    Show full item record
    Abstract
    Spatial domain multiplexing allows for expansion of optical fiber data rates by utilizing the spatial dimensions within the fiber. One form of this multiplexing method utilizes oblique input angles to generate ring-like spatial modes within the optical fiber core. This radial based spatial multiplexing (rSDM) is compatible with single core fibers and conventional optical fiber systems. As rSDM has been shown to be independent of wavelength, rSDM channels allow for adaption of wavelength division multiplexing, and has been experimentally shown to be capable of improving optical fiber data rates by at least an order of magnitude. Current research into rSDM system have been largely experimental in nature; however, the full capabilities of rSDM are unknown as the technology currently lacks a rigorous theoretical model. Conventional models have been shown to be incompatible with the characteristics shown by experimental rSDM systems. For example, the most prevalent model utilizes Laguerre-Gaussian beams to generate similar radial ring patterns to that of rSDM; however, this is a free-space solution and fails to fully describe the optical fiber characteristics used to generate and propagate the rSDM rings. Hence, an end-to-end mathematical model compatible with rSDM is desired. This dissertation explores current optical vortex models and their theories by comparing them to six unique rSDM characteristics derived from experimental results. The explored models consist of phase vortices, Laguerre-Gaussian beams, Modified Laguerre-Gaussian beams, linear polarized modes, and Bessel-Gaussian beams; however, each model lacks the capability of fully describing rSDM. Bessel- Gaussian beams provide the closest match, but lacks explanation on continuity for the optical fiber system that generates rSDM. In order to achieve an applicable model, Fresnels diffraction equations are applied at the input and output of the optical fiber system. The input conditions show a clear input angle to azimuthal angle relationship; whereas, the output conditions give a higher order Bessel-Gaussian form. These two combine to provide a full end-to-end mathematical model. This model is compared to experimental rSDM results by comparing the central radial location of generated rings from a 200 um radius optical fiber and shows good correlation to the model.
    URI
    https://repository.lib.fit.edu
    http://hdl.handle.net/11141/2919
    Collections
    • Theses/Dissertations

    DSpace software copyright © 2002-2015  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    @mire NV
     

     

    Browse

    All of Scholarship RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Statistics

    Most Read ItemsStatistics by CountryMost Read Authors

    DSpace software copyright © 2002-2015  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    @mire NV