Suppression of Polarization Dependence in the Design of an Arrayed-Waveguide Grating with Photodefinable Polyimide

초록

We report on the effective means of suppressing polarization dependence in the design simulation study of an arrayed waveguide grating (AWG) made of photodefinable polyimide. The polarization dependence of an arrayed waveguide grating device for a dense WDM system was excellently suppressed by controlling the grating order (m) for an appropriate index difference between TE and TM for polyimide. The transmision characteristics of two AWG's for two grating orders, m=70 amd 90, showed wavelength shift of 5.04 nm and nearly zero, respectively.