Y-junction power splitter engineered through subwavelength metamaterials

We present a Y-junction beam-splitter based on subwavelength metamaterials that mitigates losses associated with the fabrication limitations in the tip size of conventional Y-junctions. Simulations show minimal losses under 0.5 dB for TE0 and TE1 modes in a 300 nm range (1300 - 1600 nm).