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Robust one-way modes in photonic crystals without an external magnetic field
- Source :
- Optical Materials Express. 11:3896
- Publication Year :
- 2021
- Publisher :
- Optica Publishing Group, 2021.
-
Abstract
- Photonic crystal (PhC) consisting of a square lattice of ferrite rods with remanence in the air is theoretically investigated. It is shown that such a PhC can possess a large band gap with a nontrivial topological property. By interfacing the PhC with different cladding materials, which have (bulk-mode) band gaps with different topological properties, different types of one-way modes that are immune to backscattering are achieved in the absence of an external magnetic field. It is numerically demonstrated that by using such one-way modes, waves can be flexibly and effectively manipulated in PhC systems without almost any power loss.
Details
- ISSN :
- 21593930
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Optical Materials Express
- Accession number :
- edsair.doi...........f4e07185760d94b22146083207746934