MULTIFUNCTIONAL OPTICAL DEVICE BASED ON A TWO-DIMENSIONAL PHOTONIC CRYSTAL AND A MAGNETOOPTIC RESONATOR

摘要

The present invention is based on a two-dimensional photonic crystal in which are inserted four waveguides and one resonant cavity. Due to the existence of the photonic band gap, an electromagnetic signal that flows through the device is confined to the interior of the cavity and waveguides and, by adjusting the orientation of a dipole mode excited in the resonator, it can operate in three distinct regimes. In regime 1, subjected to an external DC magnetic field + H 0 , it operates as a two-way divider, with isolation of the input from the two outputs, and, by inverting the sign of the DC magnetic field, as an optical switch. In regime 2, with the application of a DC magnetic field -Ho, it operates as a waveguide bending element, with isolation of input from output, and, by inverting the sign of the DC magnetic field, as an optical switch. In regime 3, subjected to the application of an external DC magnetic field + H 1 , the device operates as a three-way divider.