Abstract: We designed some important parameters and analyzed loss characteristics of a 8×8 polymer arrayed waveguide grating multiplexer that op ertates around the wavelength of 1.55 μm and the wavelength spacing was 1.6 nm. The total loss of the device includes the diffraction loss in the input and out put (I/O) slab waveguides, bent loss caused by the AWG and I/O channels, and lea kage loss resulted from the high refractive index substrate. The effects of some structural parameters on the loss characteristics are investigated and discusse d.

Key words: arrayed waveguide grating, multiplexer/demultiplexer, parameter design, diffraction loss, bent loss, substrate leakage loss