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Theoretical and empirical comparison of coupling coefficient and refractive index estimation for coupled waveguide fiber

Author(s): Toto Sakioto | Jalil Ali | R osly Abdul Rahman | Mohamed Fadhali | Jasman Zainal

Journal: Journal of Applied Science and Engineering Technology
ISSN 1939-8565

Volume: 2;
Start page: 49;
Date: 2008;
Original page

Keywords: Coupling coefficient | Coupling ratio | Refractive index | Single mode fiber

Power transmission and coupling of coupled waveguidefibers are affected on the coupling coefficient. The coupling coefficients obtained in experimental results vary in widely. The coupling coefficients have a function of separation of fiber axis and refractive index of core and cladding. For the empirical formula,coupling coefficient is calculated from experimentalresult of coupling ratio distribution from 1% until 75%. Theoretically, the coupling coefficient has a dependence of some parameters resulting in a sinusoidal curve. Both empirical and theoretical formulae are compared to obtain new phenomena of the refractive index of fibers after fusion.
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