A regularized inverse-designed silicon metamaterial splits 1520 nm and 1580 nm light from a 10-um-wide waveguide into two narrow outputs in a 2.4 x 10 um2 footprint, with measured crosstalk down to -25 dB.
F.; Ding, Y.; Sigmund, O.; Frandsen, L
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Implementation of on-chip multi-channel focusing wavelength demultiplexing with regularized digital metamaterials
A regularized inverse-designed silicon metamaterial splits 1520 nm and 1580 nm light from a 10-um-wide waveguide into two narrow outputs in a 2.4 x 10 um2 footprint, with measured crosstalk down to -25 dB.