2022/08/21 by Grabulosa, Adrià, Porte, Xavier, Jung, Erik +3
#FOS: Physical sciences #Optics (physics.optics)
paper · doi:10.48550/arxiv.2208.09767
We report single-mode 3D optical couplers leveraging adiabatic power transfer towards up to 4 output ports. We use the CMOS compatible additive (3+1)D flash-TPP printing for fast and scalable fabrication. Coupling optical losses of such devices are reduced below ∼~0.06~dB by tailoring the coupling and waveguides geometry, and we demonstrate almost octave-spanning broadband functionality from 520~nm to 980~nm.