Frontiers of Optoelectronics, Volume. 14, Issue 2, 148(2021)
Finite element modeling of electromagnetic properties in photonic bianisotropic structures
Given a constitutive relation of the bianisotropic medium, it is not trivial to study how light interacts with the photonic bianisotropic structure due to the limited available means of studying electromagnetic properties in bianisotropic media. In this paper, we study the electromagnetic properties of photonic bianisotropic structures using the finite element method. We prove that the vector wave equation with the presence of bianisotropic is selfadjoint under scalar inner product. we propose a balanced formulation of weak form in the practical implementation, which outperforms the standard formulation in finite element modeling. Furthermore, we benchmark our numerical results obtained from finite element simulation in three different scenarios. These are bianisotropydependent reflection and transmission of plane waves incident onto a bianisotropic slab, band structure of bianisotropic photonic crystals with valley-dependent phenomena, and the modal properties of bianisotropic ring resonators. The first two simulated results obtained from our modified weak form yield excellent agreements either with theoretical predictions or available data from the literature, and the modal properties in the last example, i.e., bianisotropic ring resonators as a polarizationdependent optical insulator, are also consistent with the theoretical analyses.
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Zhongfei XIONG, Weijin CHEN, Zhuoran WANG, Jing XU, Yuntian CHEN. Finite element modeling of electromagnetic properties in photonic bianisotropic structures[J]. Frontiers of Optoelectronics, 2021, 14(2): 148
Category: RESEARCH ARTICLE
Received: Feb. 24, 2021
Accepted: Apr. 22, 2021
Published Online: Dec. 1, 2021
The Author Email: CHEN Yuntian (yuntian@hust.edu.cn)