Optical fractal in cryogenic environments based on distributed feedback Bragg photonic crystals

Miaomiao Zhao; Xiaoling Chen; Qianjin Liu; Jinrui Liu; Jun Liu; Yang Wang

doi:10.1371/journal.pone.0291863

Optical fractal in cryogenic environments based on distributed feedback Bragg photonic crystals

PLoS One. 2023 Sep 21;18(9):e0291863. doi: 10.1371/journal.pone.0291863. eCollection 2023.

Authors

Miaomiao Zhao^{1

2}, Xiaoling Chen^{1

2}, Qianjin Liu^{1

3}, Jinrui Liu^{1

4}, Jun Liu^{1

5}, Yang Wang^{1

2}

Affiliations

¹ Laboratory of Optoelectronic Information and Intelligent Control, Hubei University of Science and Technology, Xianning, China.
² School of Electronic and Information Engineering, Hubei University of Science and Technology, Xianning, China.
³ Xianning Senior High School, Xianning, China.
⁴ Hubei Guanchi Intelligent Science and Technology Co., LTD, Xianning, China.
⁵ School of Resource and Environmental Science & Engineering, Hubei University of Science and Technology, Xianning, China.

Abstract

We studied the optical fractal effect of the one-dimensional distributed feedback Bragg photonic crystals formed by semiconductor GaAs and dielectric TiO2. Light wave is transmitted in the intermediate dielectric slab and reflected back by the periodic photonic crystals at both ends, forming multiple fractal resonance output. The transmission channels expand exponentially by thickening the bulk in a cryogenic environment. The quality factor of each fractal resonant state improves with a greater periodic number of crystals. Furthermore, central wave of resonance has a blue-shift as the external pressure increases, while the influence of environment temperature on the fractal resonance could be ignored. It is hoped that our study can highlight the potential of these findings for designing multi-channel communication filters in cryogenic environments.

Copyright: © 2023 Zhao et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Publication types

Research Support, Non-U.S. Gov't

Grants and funding

This research was funded by the Scientific Research Project of Hubei University of Science and Technology(NO.BK202323). The funder played the important role in study design, data collection and analysis, decision to publish, and preparation of the manuscript.