Effect of Chirality on Transmission in an Optical Fiber

Abstract

This study examines how bianisotropic chirality, introduced through LiNbO₃ material in the core, affects mode propagation in an asymmetric optical fiber. Numerical solutions of the dispersion equations using the Newton-Raphson method enabled accurate evaluation of propagation behavior. The findings show that increasing the chirality parameter enhances the propagation constants and slightly reduces cutoff frequencies. As a result, the fundamental mode carries more transmitted power, improving field confinement. Chirality also reduces attenuation, allowing longer transmission distances. Overall, the results indicate that incorporating chirality can optimize fiber performance for telecommunications and sensing.