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This paper presents a simpler approach for the analysis of the excitation and the mode coupling effects of surface plasmons in a D-shaped fiber. It is proposed the resonant transfer of energy in the fiber can be predicted by considering the coincident propagation constant for two distinct waveguides, namely a circular step-index fiber; and a multilayered step-index planar waveguide having refractive...
A new approach of determining surface plasmon resonance (SPR) wavelength based on the polarization dependence has been suggested. A D-shape fiber with gold coating on the top surface has been demonstrated for the verification of this new approach. From the simulation experiment it is found that the resonance wavelength coincides with the zero-birefringence point of two orthogonally polarized degenerate...
We theoretically study for the first time the waveguiding properties of an all-solid photonic bandgap fiber with elliptical cladding rods. High birefringence in the order of 10-3 is easily achievable in such fibers. The contributions of the cladding rod's ellipticity, the lattice ratio of the cladding microstructure as well as the index contrast of two soft glasses to the birefringence are systematically...
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