Birefringent Microstructured Fibres with Single-Mode Guidance in the Spectral Range of 0.2 – 2.3 microns

The results of the numerical analysis of a new design of birefringent microstructured fibres containing three rings of identical air holes around an elliptical core with different distances between the rings of holes are presented in this study. The first ring contains two pairs of holes, which are more widely spaced than others. The study shows that the proposed design makes it possible to obtain single-mode guidance of fibres in the spectral range of 0.2 - 2.3 microns.