12 October 2005 Highly birefringent photonic crystal fibers with elliptical holes
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Abstract
We present experimental realization of elliptical-hole rectangular lattice photonic crystal fibres fabricated from multi-component glass. The photonic cladding has a lattice constant 2.17 μ and 3.72 μ for main axis, respectively and elliptical holes with ellipticity 2.14. The rectangular lattice is chosen to obtain two-fold geometry and to increase the global asymmetry of photonic structure, which enhance birefringence of fibre. Rectangular lattice allows also a better control of elliptical air holes uniformity during fabricating process. Fabricated fibres have a cladding with a rectangular cross-section. It allows for easy identification of the fibre's principal axes and orientation of the fibre with respect to directional measured perturbation like axial stress, bending force in sensor applications. Using a full vector plane-wave expansion method an influence of structure parameters such as ellipticity of air holes and aspect ratio of rectangular lattice on birefringence and modal properties of the fibres are studied. Potential applications of the fibres are discussed.
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Przemyslaw Szarniak, Przemyslaw Szarniak, Ryszard Buczynski, Ryszard Buczynski, Dariusz Pysz, Dariusz Pysz, Ireneusz Kujawa, Ireneusz Kujawa, Marcin Franczyk, Marcin Franczyk, Ryszard Stepien, Ryszard Stepien, } "Highly birefringent photonic crystal fibers with elliptical holes", Proc. SPIE 5950, Photonic Crystals and Fibers, 59501L (12 October 2005); doi: 10.1117/12.623045; https://doi.org/10.1117/12.623045
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