We have investigated two unique design S-shaped and U-shaped PCF structure. The geometry is chosen such that the S-shaped PCF structure is diagonally symmetrical whereas the U-shaped PCF structure is vertically symmetrical. The Sshaped PCF structure exhibits zero dispersion at three point within the third optical window. However, the U-shaped PCF structure reports zero dispersion at first optical window. Besides, we have studied the other properties like birefringence, normalized frequency and confinement loss for the designed fiber. It is to be noted that S- shaped PCF structure was found more suitable than U- shaped PCF structure for application purpose.