Pavanello, FabioFabioPavanelloMuliuk, GrigorijGrigorijMuliukRoelkens, GuntherGuntherRoelkens2021-10-272021-10-272019https://imec-publications.be/handle/20.500.12860/33756Highly-efficient grating couplers based on transfer-printing technologyProceedings paper