Abstract: A new computer aid design (CAD) software arrayed waveguide grating (AWG) analysis called AWGCAD is reported, by which the parameters can be optimized and the characteristics of AWGs can be analyzed. The simulation precision and function can compare beauty with the software developed by some other corporations. We gave some recommendation of some modules of the software, such as analysis of waveguide effective refractive index, parameters relations, bent loss, coupling pitch of waveguides, FSR, diffraction loss and diffraction effciency, side-lobe restrain, leakage loss caused by high refractive index substrate and crosstalk.

Key words: arrayed waveguide grating, multiplexer, computer aid design