Dual-core chiral planar waveguide-based compact and efficient dispersion compensator

•Planar chiral waveguides are used for dispersion compensation.•Gient GVD is achieved with good bandwidth.•Gives better options as compared to nihility mediums.

The paper is devoted to the design of dispersion compensator comprised of dual-core planar chiral waveguide having different refractive indices, and cladded with homogeneous dielectric mediums. It has been found that the supermodes play vital role in tuning the group velocity dispersion (GVD) with the aid of chirality parameters, which is evident from the achieved giant GVD with narrow bandwidth. Apart from the material parameters, the effect of core spacing on the features of GVD is also investigated. It is expected that such dispersion compensators would be trendy and greatly useful in communication systems.