Properties analysis of tellurite photonic crystal fiber filled with nematic liquid crystal

Abstract

We theoretically investigate the modes, birefringence, dispersion, confinement loss, nonlinear coefficient and the temperature properties of tellurite photonic crystal fiber filled with nematic liquid crystal. The birefringence caused by the high index difference between ordinary and extraordinary refractive indices of nematic liquid crystal makes it possible for single-mode single-polarization guiding. The influence of rotation angle of the director of liquid crystal on the modal properties is also demonstrated. The results demonstrate that the dispersion curve of tellurite photonic crystal fiber filled with nematic liquid crystal along fast axis is more flatten than that along slow axis the fast axis. The tellurite photonic crystal fiber filled with nematic liquid crystal has low confinement loss and high nonlinear coefficient. When temperature is increased from 15°C to 45°C, the birefringence of tellurite photonic crystal fiber filled with nematic liquid crystal gradually decreases and the dispersion along slow axis gradually becomes flat, which is very useful for making compact and diverse polarization-manipulating devices.