Highly Nonlinear Bending-Insensitive Birefringent Photonic Crystal Fibres

Highly nonlinear birefringent Photonic Crystal Fibre (PCF) that exhibits low losses and small effective mode area across a wide wavelength range has been presented. The effects of angular orientation on bending losses of the proposed PCFs have been thoroughly investigated by employing a full vectorial finite element method(FEM). It has been demonstrated that it is possible to design a bending-insensitive nonlinear PCF with a birefringence

in the order of 10-2 and a nonlinear coefficient of 49 W-1km-1 at the wavelength of 1.55 ?m. Also,significant improvements on key propagation characteristics of the proposed PCFs have been demonstrated by carefully altering the desired air hole diameters and the hole-to-hole spacing. It is demonstrated that two zero dispersion wavelengths can be achieved by the proposed design.