Steering of one-way large-area waveguide modes in topological heterostructures with gyromagnetic photonic crystals

He，Liu1; Ren，Qun2,3; You，Jian Wei3; Sha，Wei E.I.4; Lan，Zhihao5; Zhang，Yating1; Yao，Jianquan1,6

2023-02-01

10.1016/j.ijleo.2022.170323

OPTIK   Impact Factor & Quartile

0030-4026

We study the steering of one-way and large-area topological waveguide modes in heterostructures consisting of a domain of ordinary photonic crystals sandwiched between two domains of magnetic-optical photonic crystals. Taking advantage of the band and mode properties of the topological heterostructures, we first demonstrate the design of four basic steering units which can realize the functionalities of forward-guiding, T-splitting, upward turning and downward turning. We demonstrate in detailed characteristic with the high-efficiency and broad-bandwidth of these basic steering units designed. Moreover, by combining these basic steering units, we implement a series of multifunctional waveguide devices, such as one-way large-area waveguide splitters with multiple channels and different angles, a highly bended large-area waveguide with five 90° corners along the propagation path, and waveguide structures supporting waveguide-cavity interaction, delay, splitting as well as storage functionalities. Importantly, all these different functionaries could be realized in a single system platform by simply reconfiguring the underlying magnetic field distributions. Our work opens up a new venue towards designing multi-functional waveguide devices by exploiting the width degree of freedom of the large-area waveguide modes.

Magnetic-optical photonic crystals Multifunctional steering One-way large-area waveguide modes Topological heterostructures

English

Others

National Key Research and Development Program of China[2017YFA0700202];National Key Research and Development Program of China[2021YFB2800703];National Natural Science Foundation of China[61735010];

PHYSICS

2-s2.0-85143324194

Scopus

1.Key Laboratory of Opto-Electronics Information Technology (Tianjin University),Ministry of Education,School of Precision Instruments and Opto-Electronics Engineering,Tianjin University,Tianjin,300072,China
2.School of Electrical and Information Engineering,Tianjin University,Tianjin,300072,China
3.State Key Laboratory of Millimeter Waves,School of Information Science and Engineering,Southeast University,Nanjing,210096,China
4.Key Laboratory of Micro-Nano Electronic Devices and Smart Systems of Zhejiang Province,College of Information Science and Electronic Engineering,Zhejiang University,Hangzhou,310027,China
5.Department of Electronic and Electrical Engineering,University College London,London,Torrington Place,WC1E 7JE,United Kingdom
6.Department of Electrical and Electronic Engineering,South University of Science and Technology of China,Shenzhen,518055,China

He，Liu,Ren，Qun,You，Jian Wei,et al. Steering of one-way large-area waveguide modes in topological heterostructures with gyromagnetic photonic crystals[J]. OPTIK,2023,272.

He，Liu.,Ren，Qun.,You，Jian Wei.,Sha，Wei E.I..,Lan，Zhihao.,...&Yao，Jianquan.(2023).Steering of one-way large-area waveguide modes in topological heterostructures with gyromagnetic photonic crystals.OPTIK,272.

He，Liu,et al."Steering of one-way large-area waveguide modes in topological heterostructures with gyromagnetic photonic crystals".OPTIK 272(2023).