Design parameters of free-form color splitters for subwavelength pixelated image sensors
Sanmun Kim,
Chanhyung Park,
Shinho Kim,
Haejun Chung,
Min Seok Jang
Affiliations
Sanmun Kim
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
Chanhyung Park
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
Shinho Kim
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
Haejun Chung
Department of Electronic Engineering, Hanyang University, Seoul 04763, South Korea; Department of Artificial Intelligence, Hanyang University, Seoul 04763, South Korea
Min Seok Jang
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea; Corresponding author
Summary: Metasurface-based color splitters are emerging as next-generation optical components for image sensors, replacing classical color filters and microlens arrays. In this work, we report how the design parameters such as the device dimensions and refractive indices of the dielectrics affect the optical efficiency of the color splitters. Also, we report how the design grid resolution parameters affect the optical efficiency and discover that the fabrication of a color splitter is possible even in legacy fabrication facilities with low structure resolutions.
