TY  - RPRT
TI  - Nonlinear frequency conversion in waveguide directional couplers.
AU  - Po Dong
AU  - Andrew G Kirk
PY  - 2004
DO  - 10.1103/physrevlett.93.133901
UR  - https://pubmed.ncbi.nlm.nih.gov/15524719/
ID  - 15524719
ER  -