Polarization-independent InP-based phased-array wavelength demultiplexer with flattened wavelength response

The authors have realized the first wavelength-flattened polarization-independent phasar demultiplexer. The device operates at 1.54 mu m with excess loss lower than 5 dB and crosstalk better than -14 dB over a range of 0.3 nm, and has four channels with 1 nm spacin