Fig. 6From: Design and performance analysis of integrated focusing grating couplers for the transverse-magnetic TM00 mode in a photonic BiCMOS technologySimulated coupling loss spectra for a rib-waveguide GCs for TM with two different rib slab heights: shallowly etched (s-rib, 150 nm slab) and deeply etched (d-rib, 100 nm slab). The coupling angle is 14°Back to article page