Article,
Design & Analysis of Optical Lenses by using 2D Photonic Crystals for Sub-wavelength Focusing
International Journal of Advanced Computer Science and Applications(IJACSA), (2012)
Abstract
2D Photonic lenses (Convex-Convex, Convex-Plane, Plane-Convex, Concave-Concave, Concave-plane, and Plane-Concave) have been designed, simulated and optimized for optical communication using FDTD method. The effect of Crystal structures (Rectangular, Hexagonal, Face centered Cubic (FCC), Body centered Cubic (BCC), variation lattice constant (?), hole radius(r), reflective index (n), is demonstrated to get optimized parameters. Finally, with optimized parameters the effect of variation of lens radius on focal lengths and Electrical Field Intensity (Ey) is analyzed. Like optical lens, the focal length of photonic lens is also increased with lens radii, has dependency on optical axis. Moreover, with optimized parameters, Concave-Concave lens have been found as an optimal photonic lens that show sub-wavelength focusing with spatial resolutions- 9.22439&\#181;m (Rectangular crystal), 7.379512&\#181;m (Hexagonal Crystal), 7.840732&\#181;m (FCC, BCC).
