Effect of the matrix dimension on the performance of photonic nanojets produce from an array of cubiod profile microsteps

The generations of a highly intense non resonant localized sub-wavelength size spots (Photonic nanojets) from an array of cuboied profile microstep have been theoretically investigated. The computations of photonic nanojets are based on numerical solution of Maxwell equations which was performed by using a graphical user interface based finite difference time domain method. From investigation it was found that the propagation length of the photonic nanojets generated from the array of cuboied profile Polydimethylsiloxane microstep decreases as increase in the matrix dimesion. In addition, the field distributions of the core PNJs are likely to be uniform as the matrix dimension increases.