Ultra-Low Crosstalk, Flat Pass-band and Low Loss CWDM (De-)Multiplexer based on PSO Algorithm

We obtain an ultra-low crosstalk, flat pass-band (de-)multiplexer using PSO algorithm. The results show that the (de-)multiplexer achieves a pass-band flatness of 15 nm, a crosstalk below -33.4 dB and insertion loss below 0.2 dB.