Principles of Dispersion Engineering in Photonic Crystal Devices

摘要

Wave propagation in Photonic Crystal Fibers is known for revealing very strong chromatic dispersion characteristics despite the waves being confined in the direction along the fiber axes. 2D and 3D photonic crystal devices offer even more degrees of freedom, as the angular dispersion of the propagating waves can be additionally included into the design. We present the basic principles which can be used for tailoring the overall dispersion characteristics of a single photonic crystal device and of combinations of different structures. Precise calculations and simulations are required in order to obtain reliable information on the dispersion parameters including also higher-order terms. Thus our calculations are based on the propagation of Gaussian beams.