A novel design of 100GHz-spaced 16channel arrayed-waveguide grating (AWG) based on silica-on-silicon chip is reported.AWG is achieved by adding a Y-branch to the AWG and arranging the input/output channel in a neat row, so the whole configuration can be aligned and packaged using only one fiber-array. This configuration can decrease the device’s size, enlarge the minimum radius of curvature, save time on polishing and alignment, and reduce the chip’s fabrication cost.