Highly efficient grating coupler consisting of photonic-crystal-like rectangular-lattice perforated hole array and partially-etched linear gratings

[P-75] Highly efficient grating coupler consisting of photonic-crystal-like rectangular-lattice perforated hole array and partially-etched linear gratings

*Rikuto Taira¹, Saneyuki Suyama¹, Keisuke Hirotani¹, Toshihiko Baba¹ (1. Yokohama National University)

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