Detection of single mode property in hexagonal (four/five layers) layouts of microstructured Photonic crystal fiber

The two dimensional photonic crystal fiber (PCF) with a triangular lattice cross-section pattern of circular air hole is investigated for four and five layer by the use of finite difference time domain (FDTD) method to investigate the single mode property and the effect on it by increasing the number of layer as well as by varying the air hole diameter.