Design and Analysis of T-Shaped Defect-Based Photonic Crystal Waveguide for Application of Optical Interconnect

The present work addresses design and analysis of a T-shaped defect-based 2D photonic crystal (PhC) to realize optical interconnect application. The proposed structure is designed in OptiFDTD simulation platform, where the finite-difference time-domain (FDTD) is the backend computational algorithm. Electric field distribution along the T-shaped waveguide is studied. The photonic band gap is analysed using plane wave expansion method, where it is seen that the signal that falls within the band gap can propagate along the defect. The power at the output ports is evaluated. A very low nonlinear coefficient in the order of 10⁻⁶ is obtained, which infers that the designed structure has enough potential as an optical interconnect in the light wave circuit.