Mid‐Infrared Hyperuniform Disordered Solids Waveguide Devices with Morphology Engineering and Wall‐Network Regulation

Author:

Chen Si12ORCID,Sun Yuhan3,Zhang Hong3,Xu Tianping12,Zhang Zunyue12,Han Qun12,Liu Tiegen12,Zou Yi3,Cheng Zhenzhou12456ORCID

Affiliation:

1. School of Precision Instrument and Opto‐Electronics Engineering Tianjin University Tianjin 300072 China

2. Key Laboratory of Opto‐Electronic Information Technology Ministry of Education Tianjin 300072 China

3. School of Information Science and Technology ShanghaiTech University Shanghai 201210 China

4. Georgia Tech‐Shenzhen Institute Tianjin University Shenzhen 518055 China

5. Department of Chemistry The University of Tokyo Tokyo 113‐0033 Japan

6. School of Physics and Electronic Engineering Xinjiang Normal University Urumqi 830054 China

Abstract

AbstractHyperuniform disordered solids (HUDS) waveguides, a type of emerging artificial photonic bandgap (PBG) devices, are demonstrated to possess large, complete, and isotropic PBGs, being promising for developing applications in optoelectronics, nonlinear optics, and sensing. However, optical losses of HUDS waveguides are usually limited by giant light scattering from the irregular distribution of HUDS cells. Herein, HUDS waveguide devices are demonstrated with low optical losses and large PBGs by exploring a morphology‐engineering and wall‐network‐regulation method of developing HUDS structures. The results show that the proposed device can achieve a 3.0 dB transmittance improvement for a 36‐µm‐long silicon HUDS waveguide. Based on the proposed HUDS structure, a waveguide‐coupled HUDS‐cladding nanocavity is also demonstrated with a quality factor of ≈70 at 2.250 µm wavelengths and a theoretical refractive index sensitivity of 446 nm RIU−1. The study opens an avenue to develop intriguing HUDS waveguide devices for on‐chip applications.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Tianjin Municipality

Natural Science Foundation of Guangdong Province

Japan Society for the Promotion of Science

Publisher

Wiley

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