journal article·2020-05

Nanophotonic Polarization Routers Based on an Intelligent Algorithm

Cuicui Lu, Zhouhui Liu, You Wu, Zhiyuan Xiao, Dongyi Yu, Hongyu Zhang, Chenyang Wang, Xiaoyong Hu, Yong‐Chun Liu, Xiaohong Liu, Xiangdong Zhang

Advanced Optical Materials· Volume 8· Issue 10
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Abstract

Abstract Nanophotonic polarization routers, which can separate and steer light with different polarizations of transverse electric and transverse magnetic modes into different output ports, are an essential component of on‐chip integrated photonic circuits. By developing an intelligent algorithm that combines the genetic algorithm and the finite element method, various polarization routers possessing different operation bands, different structures, and different materials, which can be easily fabricated and integrated, are successfully designed. On‐chip ultrasmall silicon‐based polarization routers are experimentally demonstrated in the near‐infrared range. The footprint is only 970 nm × 1240 nm, which is the smallest demonstrated. The measured normalized transmission is up to 85% in the near infrared range. Additionally, a broadband highly efficient photon coupler is also achieved based on disordered‐grating configurations designed by the intelligent algorithm. This breaks the restrictions of traditional structures, provides a universal platform for the realization of nanophotonic polarization routers, and paves a way for the design and high‐density on‐chip integration of nanophotonic devices.
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Research context

OpenAlex topics: Photonic and Optical Devices · Photonic Crystals and Applications · Neural Networks and Reservoir Computing

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Physics Beijing Institute of Technology Beijing 100081 China

State Key Laboratory for Mesoscopic Physics & Department of Physics Collaborative Innovation Center of Quantum Matter Beijing Academy of Quantum Information Sciences Nano‐Optoelectronics Frontier Center of Ministry of Education Peking University Beijing 100871 China

Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan Shanxi 030006 China

State Key Laboratory of Low‐Dimensional Quantum Physics Department of Physics Frontier Science Center for Quantum Information Collaborative Innovation Center of Quantum Matter Tsinghua University Beijing 100084 China

Physics Department School of Sciences Nanchang University Nanchang 330031 China

Funding

National Natural Science Foundation of China · Beijing Institute of Technology Research Fund Program for Young Scholars · National Basic Research Program of China

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