[16a-P07-1~24] 3.11 Nanoscale optical science and near-field optics

[16a-P07-15] Design of Metalenses Using the FDTD Method in the Telecommunication Wavelength Band for Application in Optical Communication

〇(D)Masaki Okamoto¹, Kenta Nakagawa¹, Yasufumi Yamada¹, Takeshi Sugiura², Shiei Kusajima², Toru Asahi¹ (1.Waseda Univ., 2.OPTORUN Co.,Ltd.)

Keywords:

metasurface,metalens

The rapid increase in the data processing demands and power consumption of IT devices within networks has necessitated the development of high-capacity, low-power information and communication technologies. The construction of an "All-Photonic Network," which aims to introduce photonics technologies at all levels, from devices to chips, has garnered significant attention. Currently, optical connections between chips utilize macroscopic optical components such as mirrors, lenses, and polarization elements. However, due to their volume and complex three-dimensional structures, there are limits to miniaturization. We aim to replace these macroscopic optical components used in chip-to-chip optical connections with metasurface materials—a flat, planar substrate—to achieve package miniaturization. In this poster presentation, we report on electromagnetic field simulations using the finite-difference time-domain (FDTD) method to replace conventional macroscopic lenses with metalenses while achieving a package with equivalent performance to conventional macroscopic lenses but in a smaller form factor.