PHOTONICS DEVICE HAVING ARRAYED WAVEGUIDE GRATING STRUCTURES

摘要

PURPOSE: An optical device chip is provided to improve the crosstalk properties of an arrayed waveguide grafting structure by reducing phase errors that result from changes in the width of an arrayed waveguide. CONSTITUTION: Arrayed waveguide grafting structures(AWG1,AWG2) each comprises an input star coupler, an output star coupler, and a plurality of arrayed waveguides. A plurality of arrayed waveguides optically interlinks the input star coupler and the output star coupler. Each arrayed waveguide includes at least one first phase and at least two second phases. The first phase has a confinement factor. The second phase has a low confinement factor. The first phases of the plurality of arrayed waveguides have the same structure.