A Broadband Optical Diode for Linearly Polarized Light Using Symmetry‐Breaking Metamaterials
Abstract
As an analog of electrical diodes, optical diodes enable asymmetric transmission or one‐way transmission of light. Here, a thin bilayer metamaterial supporting asymmetric transmission is experimentally demonstrated for linearly polarized light but not for circularly polarized light over a broad bandwidth up to 50 terahertz in the near‐infrared region. A simple and intuitive working principle based on the symmetry inherent in the metamaterial design is provided, along with full‐wave simulations that agree well with the experimental results. It is also proved that the design is extremely insensitive to spatial misalignment, which may occur during the nanofabrication process. These prominent features promise a wide range of applications, such as ultrafast optical computing, information processing, and suppressing undesired interactions of light in integrated micro‐ and nanodevices.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 07, 2017
- Source ID
- 10.1002/adom.201700600
Entities
People
- Gwanho Yoon
- Inki Kim
- Junsuk Rho
- Kan Yao
- Minkyung Kim
- Yongmin Liu
Organizations
- Ministry of Science, ICT and Future Planning
- National Research Foundation of Korea
- Northeastern University
- Office of Naval Research
- Pohang University of Science and Technology