400-channel 25-GHz spacing arrayed-waveguide grating covering a full range of C- and L-bands

We realized a 400-channel 25-GHz spacing arrayed-waveguide (AWG) on a 6-inch Si wafer using 1.5%-/spl Delta/ silica-based waveguides. This AWG covers the full C- and L-bands and exhibits an on-chip loss of 3.8-6.4 dB.