TY  - RPRT
TI  - Compact double-grating coupler between vertically stacked silicon-on-insulator waveguides.
AU  - Po Dong
AU  - Andrew G Kirk
PY  - 2005
DO  - 10.1364/ao.44.007540
UR  - https://pubmed.ncbi.nlm.nih.gov/16363778/
ID  - 16363778
ER  -