- E. Narevicius, "Method and Apparatus for Optical Mode Division Multiplexing and Demultiplexing", US patent 7,609,918
- E. Narevicius, I. Vorobeichik, Y. Berlatzky, R. Narevich, "Method and Device for Optical Switching and Variable Optical Attenuation", US patent 7,321,705
- I. Vorobeichik; M. Greenberg, Y. Berlatzky, E. Narevicius, R. Narevich, "Method and Apparatus for Optical Mode Conversion", US patent 7,218,814