In the interaction with the light field

metasurfaces show unique optical properties and many interesting physical phenomena.It is expected that the ability of manipulating the optical wave can be improved by using metasurfaces based optoelectronic devices.In this paper

a new type of optical power splitting scheme based on silicon-based metasurfaces is proposed in optical fiber communication system.The results show that the cross-polarization conversion efficiency with phase delay exceeds 90% while the useless co-polarization conversion efficiency can be compressed into 1.2% within wavelength range of 1 458

1

593 nm by optimizing the unit nanostructure of the silicon-based metasurfaces.In addition

the coupling effect between the adjacent silicon nanobricks is studied in order to reduce their influences on the phase precision.Finally

four different optical power splitting patterns are realized and verified by simulations.The proposed optical power splitting technique based on metasurfaces has the advantages of compact size

high efficiency

polarization-state insensitive

broadband response

flexible design

and compatibility with semiconductor manufacturing process

which can achieve ultra-dense

arbitrary

and intelligent power distribution for the optical communications in the future.