[19p-Z10-1~15] 3.11 Photonic structures and phenomena

[19p-Z10-9] Photonic crystal structure dependence in automated optimization of L3 nanocavity

〇Eiichi Kuramochi^1,2, Shota Kita^1,2, Akihiko Shinya^1,2, Masaya Notomi^1,2 (1.NTT-NPC, 2.NTT-BRL)

Keywords:photonic crystal, optical nanocavity, photonics chip

We are studying automated optimization of L3 silicon photonic crystal nanocavity by optimizing the position of specific 20 holes. After optimization with Q factor of ~10⁷, the Q factor was very sensitive to the deviation of hole radius (r) from the designed value. But we revealed that the automated optimization can optimize the cavity as it had Q factor of ~10⁷ for wide range of r/a value (a: lattice constant).