[21a-A205-1~10] 3.14 Silicon photonics and integrated photonics (formerly 3.15)

△ [21a-A205-9] Design of Compact and Low-loss 2×2 coupler based on CMA-ES

〇(D)Yuto Miyatake¹, Kasidit Toprasertpong¹, Shinich Takagi¹, Mitsuru Takenaka¹ (1.Univ. Tokyo)

Keywords:Si photonics, 2x2 coupler, CMA-ES

Recently, programmable photonic integrated circuits (PICs) based on Si photonics have been the focus of much research. In order to scale up the most widely used Clements-type PIC, it is necessary to improve the performance of the 2×2 coupler, which is a component of the circuit. In this study, by applying the CMA-ES algorithm to the design of a 2×2 coupler, we have successfully designed a compact, low-loss, fabrication tolerant, and thermally stable 2×2 coupler.