Design of an ultrasharp silicon multimode waveguide bend assisted by multiregional subwavelength grating structures

J Wang, S Sun, R Zhang, F Zhang… - Journal of …, 2021 - spiedigitallibrary.org
Sharp multimode waveguide bends are beneficial to improve the integration density of the
on-chip mode-division multiplexing (MDM) systems, which can be used to increase the …