Four different Photonic Crystal Fibers (PCFs) with variation in ratio of diameter of air holes and hole to hole spacing (d/∧) has been investigated. Two different ratio of (d/∧) equals to 0.5 and 0.6 has been made in different quadrants of hexagonal PCF structures. Structure C with uniform distribution of (d/∧)= 0.6 shows excellent results. Besides all the structures reports very low dispersion and very low loss.