[24a-11E-1~9] 3.10 Photonic structures and phenomena (formerly 3.11)

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[24a-11E-5] Design of Highly Efficient Optical Couplers for Topological Slow-light Waveguides through the Covariance Matrix Adaptation Evolution Strategy

〇Nao Harada¹, Hironobu Yoshimi², Yuchen Zhao^1,3, Satoshi Iwamoto¹ (1.RCAST Univ. of Tokyo, 2.Independent, 3.Xi'an Univ. Tech.)

Keywords:

valley photonic crystal,slow light,optical coupler

Valley photonic crystal (VPC) waveguides enable robust propagation of light even in the presence of certain structural defects or sharp bends, making them promising for applications such as miniaturization of photonic integrated circuits (PICs). Our group has proposed and realized a topological slow-light waveguide using VPC (VPC-TSLW) and realized an optical coupler with high-coupling efficiency between a wire waveguide and a VPC-TSLW, which is essential for applications to PICs. Here, we report the design of an optical coupler through the covariance matrix adaptation evolution strategy for further improvement of this coupling efficiency.