F. Liu et al., Very low crosstalk wavelength router construction using arrayed-waveguide grating multi demultiplexers, ELECTR LETT, 35(10), 1999, pp. 839-840
A very low crosstalk N x N wavelength router construction using 1 x N array
ed-waveguide grating multi/demultiplexers is described. A crosstalk level o
f < -53 dB has been measured in such an 8 x 8 wavelength router. Even a 64
x 64 wavelength router can be built with a large crssstalk margin.