The authors report a compact high performance polarisation-independent
InP reflective arrayed waveguide multi-wavelength filter. With a die
size of 1.2mm x 2.4mm, the 8 x 1.6nm channel filter operated in the 1.
5 mu m fibre band with -20dB crosstalk, 4.9dB of on-chip loss, and no
measurable polarisation sensitivity.