Metasurface polarization splitter
Abstract
Polarization beam splitters, devices that separate the two orthogonal polarizations of light into different propagation directions, are among the most ubiquitous optical elements. However, traditionally polarization splitters rely on bulky optical materials, while emerging optoelectronic and photonic circuits require compact, chip-scale polarization splitters. Here, we show that a rectangular lattice of cylindrical silicon Mie resonators functions as a polarization splitter, efficiently reflecting one polarization while transmitting the other. We show that the polarization splitting arises from the anisotropic permittivity and permeability of the metasurface due to the twofold rotational symmetry of the rectangular unit cell. The high polarization efficiency, low loss and low profile make these metasurface polarization splitters ideally suited for monolithic integration with optoelectronic and photonic circuits.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 28, 2017
- Source ID
- 10.1098/rsta.2016.0072
Entities
People
- Brian A. Slovick
- Dayrl P. Briggs
- Ivan I. Kravchenko
- Jason Valentine
- Parikshit Moitra
- Srini Krishnamurthy
- You Zhou
- Zhi Gang Yu
Organizations
- National Science Foundation
- Oak Ridge National Laboratory
- Office of Naval Research
- University of Southampton
- Vanderbilt University
- Washington State University