An Innovative Way to Determine the PCF Parameters for Particular Packet of Data Using Fuzzy Logic

Abstract

The photonic crystal fiber (PCF) is the fiber cable with pure silica and surrounded by a hollow air in clad region to eliminate the dispersion effects and the confinement loss problem. In many previous works, the authors were focuses there study to compute and well determine the signal characteristics to reach the flattened zero dispersion region and with minimum loss. In this paper a novel approach for determination the cable parameters is used by means of fuzzy logic (FL). In practical life, same PCF is used to connect different types of data; such as telephone, TV and internet, so, many problems are occurred. When the core radius (a) and the pitch ($\Lambda$) value in addition to air hole diameter (d) are well determined the link transmission will be in optimum situation and low losses in the arrived data. The FL is used in this paper for its smart ability and well controls the transition for the given type of data link. The nature of the data and point to point distance are the main input for the proposed system which will determine the desired parameters for the used cable. Real values were used for the input and output variables to satisfy the optimum cable characteristics with minor error rate. When the data nature is telephone service (56 kbps) and the distance is near (500 m) the cable required has a parameters: (core radius= (7.64 $\mu m)\Lambda =1.64 \mu m$ and d=1.31 $\mu m$); while when the data nature is internet service (1 Gbps) and the distance is far (5 km) the cable required has a parameters: (core radius= (1.74 $\mu m$)$\Lambda$=0.94 $\mu m$ and d=0.56 $\mu m$)