In this article, a high contrast all-optical XOR gate is proposed using photonic crystal based T-shaped waveguide. Out of phase inputs allow the gate to produce a quite low intensity at the output to represent logic ‘0’ which results in higher contrast ratio of 45.52 dB. The calculated bit rate of the proposed gate is 7.375 Tbps which has made it suitable to work in high speed optical computing and telecom networking environments.