Mach-Zehnder Interferometer in a Rod-type Photonic Crystal

摘要

We propose a compact, high efficient full photonic crystal Mach-Zehnder interferometer based on the self-collimation and photonic band gap in a Rod-type Photonic Crystal. Line defected photonic crystals are used as the beam splitter and the mirror. Self-collimation frequency range is confirmed by employing the plane wave expansion method. The interference is investigated with the finite difference time domain simulation technique, and the simulation results agree well with the theoretical prediction. Because of their small dimensions, the proposed MZ interferometer hold great potentials for applications in photonic integrated circuits．