Two dimensional photonic crystal based 4x2 optical encoder with ultra-compact and high contrast ratio

Abstract

Photonic crystal based optical devices is offering high transmission efficiency, more bandwidth and high bit rate for photonic integrated circuits. In this attempt, the proposed two dimensional photonic crystal with triangular lattice based 4x2 encoder is primarily designed using Y Shaped waveguides with line and point defects in order to enhance the functional parameters. By using the Finite Difference Time Domain method (FDTD) and Plane Wave Expansion Method (PWE) method the following parameters such as Normalized Power, Contrast ratio, Response time and Bit rate are estimated. In addition, the impacts of functional parameters while varying the size of the defect rods are explored. The proposed encoder is providing contrast ratio of 13.6 dB, response time of 0.28ps and the bit rate of 3.5Tbpsandoperated at 1520nm and it can be utilized for high performance optical networks..