Demultiplexers with /spl sim/10 pm (1.25 GHz) -3dB transmission bandwidth using a virtually imaged phased array (VIPA)

We demonstrate 12-17 pm and 7-9 pm linewidth for the virtually imaged phased array wavelength demultiplexer with 100 GHz and 50 GHz free spectral range respectively. We also present the first analytic theory for the linewidth.