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  • 1
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Simple approximations for the fields and propagation constants of low-order modes on circular weakly guiding fibres are derived using variational techniques. The high accuracy of these approximations for quasi-parabolic profiles is demonstrated in the case of the Gaussian profile, for which there are no analytical solutions of the scalar wave equation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Optical and quantum electronics 14 (1982), S. 347-358 
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract This paper deals with profile-independent characterization and design of single-mode optical fibres. Only two or three moments of the refractive-index profile are required rather than its exact form. Thus only a few parameters need be measured and simple formulae result for calculating microbending loss and dispersion in arbitrary fibres. These formulae are used to discuss various fibre design criteria. The use of preform data and the theoretical description of the preform-to-fibre process are considered. The method presented is compared with equivalent-step methods, which are briefly reviewed.
    Type of Medium: Electronic Resource
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