ABSTRACT
This chapter deals with the dispersion diagram of two-dimensional photonic crystal for effective design of superlens in the UV as well as visible ranges. For the said purpose, both rectangular and triangular structures are considered for simulation, where plane wave expansion method is adopted for evaluation purpose. Both TE and TM modes are considered, and normal incidence is generally excluded. Fundamentally, rectangular geometry is taken into account, and all the simulated data are compared with triangular structure with identical formation. Various known semiconductors with a wider range of dielectric constants are considered for obtaining first Brillouin zone, from which dispersion diagram is obtained as the equal frequency contour. Results show the virtual formation of superlens is possible mainly in the IR frequency spectrum, and some extension can be made in visible zone. Obtained findings will important for designing of all photonic-integrated circuit which may be considered as building block of next-generation communication technology.
