Ultra-flattened dispersion photonic crystal fiber

A full vectorial finite difference frequency domain (FDFD) analysis is effectively applied to investigate the modal characteristics of photonic crystal fibers (PCFs). Comparison with a full vectorial imaginary distance beam propagation (FVIDBP) method based on finite element scheme is made and excellent agreement is achieved. Moreover, a detailed study of PCF with hexagonal array of holes has been carried out with the purpose of optimizing both the leakage loss and the chromatic dispersion.