A rectangular core PCF has been investigated. Core with rectangular geometry has been achieved with the help of two elliptical holes with almost twenty one times more area than that of circular holes. The simulated PCF structure has reported almost zero dispersion at second, third and fourth optical windows. It also reports low dispersion at first optical window. Moreover it reports high birefringence. It is found that maximum power has been confined at the centre. Besides normalized frequency and confinement loss has been also studied.